Hard hitting Eric Weingartener Response

POWERTEC 10 Episode 141.
UPFRONT NOTICE:-
BE ABSOLUTELY SURE TO CHECK OUT EPISODE 132 BEFORE WATCHING THIS RESPONSE AS THIS IS WHERE THIS VERY SOON TO BE 'HEATED' DEBATE STARTS FROM!!!!
In this episode of PowerTec 10, DV forcefully responds to Eric Weingartener's criticism's of cam test numbers and the accuracy of reviewing supposedly supporting evidence.
Plus HIS BLATENTLY INCORRECT 'if DV had tested it' LS3 comment.

[@terrygreene5953]

I learned porting from DV's books in the early 80's. I still have those books. My time slips at the track were proof that DV knows his stuff. He's far more of a research scientist than a head porter. I like Eric's videos, but he doesn't put anywhere near the research into what he presents as DV does. Thank you, DV. You've been a bigger part of my life than you could ever imagine.

[@NathanPellham-yo8pl]

I agree man he's the o-g of the hot rod horse power community

[@jryer1]

I can say uncategorically that David spec'd out a 500+ hp 350 SBC engine for me, and this was way back in the late 1990s or early 2000s. In those days he had a service where you paid a reasonable fee and he returned a MONSTER build list with ALL the required components. From crank to carb! And let me tell you it DID NOT DISAPPOINT! I also built my own 355 SBC making 400 hp with vortec heads using one of his build books. Also way back in the early 2000s. When I say I was a complete novice before I read the book, I mean I never built anything prior to that build. I followed his book step by step and a few months later I had 400 hp tire smokin' 3rd gen camaro that I got from the junkyard for few hundred bucks. The only thing I didn't do was the bore and hone. I did everything else. Hands down David is EASILY the best LSA cam expert.

[@jimbrown563]

Anyone can learn "something" from just about anyone else, anyone who thinks this is not true is simply being foolish. I think Eric is a good hard working man, but, like anyone else, he has his limitations, and I think he's doing the best that he can, and that he is not malicious in any way, just maybe a little careless with his words. Not everyone is cut-out to be a good, careful, and articulate orator, I can overlook that, and will continue to overlook that, to possibly gain some small insight into some little tid-bit of information that I had not considered before. Personally, I think the few people that think this inadvertent faux pas is a serious affront to David are just looking for drama, and exaggerating it in a ridiculous manner. Thanks David, I've been following You since the late '70's. Chill Man, this type of accident doesn't really make any difference to the smart people. . . .

[@bjhart5174]

Keep up the good work DV, and I've followed you since you put out books 😂 and have had great results following your instructions involving head porting than anyone else. I've seen EW videos and never goes farther in depth as you do. You have always showed more than just flow numbers and the reasons behind it. I'm not saying he's a bad porter, cuz he's not. You're just more knowledgeable about it than he is.

[@DavidVizard]

BJ your comment:- I'm not saying he's a bad porter, cuz he's not. Totally agree!

[@ebf1003]

This x100

[@newtonfirefly3584]

@@DavidVizard Seems from his videos that he is among reliable, machinists, craftsman, with experience that produce proper, reliable, quality results per the intended modifications. Certainly You have the means, expertise, experience to see, notice, detect the necessary good aspects, attributes, to produce proper, reliable, quality results. Thus, if David says that he sees good aspects, etc. with Eric, and he desires to request him to perform some head porting then test the results, thus it clearly means David thinks, through proper assessment, evaluation, discernment, etc. that Eric is certainly worthwhile to proceed with a request, testing, verification, inf Eric is willing with a good, positive attitude. 😄 Oh, by the way David, this posted video has a blank, black screen from 21:40 after the usual ending with all of the credits. Perhaps the video editor can adjust the video and replace the post with a correct version ? 🧐

[@fantaseahorse4696]

@@newtonfirefly3584 Take a writing class please

[@newtonfirefly3584]

@@fantaseahorse4696 Clearly form Your comment seems that first You need a reading and comprehension, then attempt to hold Your nonsense, lies, falsehood, distortions, belittling, deriding, derogatory, condemning, baseless claims, labels, along with authoritarian direction, dictation, control ?! 😲= > thus, obviously not approaching from the content, information, knowledge, facts You are among the common ignoramuses, "Trolls" attempting to ditrect others 😞

[@salvatoregiovanni8967]

He called you “Data Void” not “Data Boy” 😄

[@thastinger345]

In your entire life, you will NEVER meet a more narcissistic person than a cylinder head guru or a defense lawyer or a surgeon. The best ones could have been in any of the other 2 professions.

[@DavidVizard]

No but you will meet some which are far less than average!

[@hughobrien4139]

The fact is another professional overstepped their boundaries and chose to stir up controversy on another creator's channel. At that point it’s just trolling on a higher level. Then this. Not once but twice inside of 24 hours. All during an election season with the masses being divided and subjected to the vitriol of politicians. Now it’s just turned into a case of two people arguing like idiots both resembling to be one and the same. I had respect for both men’s information. DV had my respect for being one of the first writers to gather my interest and make me give pause to think about what I was doing in my early automotive machining career. That was 34 years ago. I was 18 years old. Like Eric direct experience through all of these years has been different than some of DV’s teachings but there’s always context and resolutions to be considered. I still respect the fact that DV jarred my mind into thinking closer and made a mundane career transform into something interesting and meaningful with goals to achieve. Eric lends great insight into cylinder heads that I have not had much experience with. Simple well thought out examples direct and to the point and most of all they directly correlate with what my experiences have been in the induction world. Seeing this has damaged my perceptions of both. I’m sure both men were raised better than this. Egos have ran away with both minds. I battle with this within myself. No room for it when I’m seeking trusted advice. This is damaging to both involved. I’m setting sights elsewhere for a while until this blows over. By then I would hope that cooler heads prevail. There are lots of people in this world that are intentionally hurting one another to the point of ruining lives. I can’t say that I’ve seen any of it in the automotive world until now. Both should be ashamed of themselves. My final bit of advice to both. We are all capable of being tyrants. The founder of freedom all recognized this as a self evident truth and set about creating our supreme laws in a fashion to directly restrict this. Yet these day and ages we all reject the accountability on any level let alone our tyrannical tendencies. It should stop. We should all be working like Americans that strive for freedom and accept the warnings we get for resembling tyrants. Lest we stop resembling and start becoming. This is dangerous. It directly applies and it’s UnAmerican.

[@DavidVizard]

Hugh, your comment:- Now it’s just turned into a case of two people arguing like idiots both resembling to be one and the same. Loosely speaking an argument is when each party has a different opinion to the other. Here I am simply reporting facts about Eric's lack of. What the video again if you are not convinced. Your lengthy comment made many points which I think I will address on our next live show. Give me some contact method and I will hook you up with a phone number to call so we can debate this on a one on one basis.

[@brettjasonheadinventor]

it's fact-checking ..seems like some people don't like being proved wrong

[@jeffwooton7138]

Sir, I would like to respectfully ask that yall refrain from this arguing, and just do what yall do. I can understand the reasoning behind it, but I subscribe to your channel, EW's channel, and many others, for the content. I cannot wait until the cam results are presented, as I do have a plan for these exact AFR LS3 Enforcer heads, should testing prove fruitful. Thanks, keep up the awesome research, and may God bless you.

[@michaelblacktree]

Personally, I'm looking forward to the PolyQuad stuff. I have 2 of DVs books, and they have good info. But I agree, this internet drama is getting out of hand. Especially from grown men. Let's move on.

[@DavidVizard]

Guys, let us not forget that EW is misguidedly undermining my reputation here. Ignoring such would, among a certain group mindset, infer that such inaccurate comments have some credibility that just is not so!

[@bcbloc02]

@@DavidVizardDavid you have the reputation of being a round earther. To a flat earther you will always be a round earther. I believe the jury aka your viewers are fully capable of seeing the truth based on the evidence provided. All you can do is keep testing and putting the evidence out there. Trying to convince people of anything is a waste of time. Everyone has to decide for themselves in the end.

[@jeffwooton7138]

DV, I understand that part of it. I'm just ready to get back to tech now. Thank you kind sir.

[@janis4019]

@@michaelblacktreeits well understood that polyquad is a scam. Quad valve heads dont generate and dont need to generate swirl, they generate tumble. There is also zero evidence or dynos it works by any extent.

[@jaredmartin3798]

Long time viewer and reader of your books, I think I got my first one back in about 88 the pinto book. I value your knowledge and all that you do. Please keep it up, I understand the frustration you are feeling but don't try and defend yourself you don't need to. YOu have the runs on the board , please stick with awesome videos about porting and engines. Let the muppets carry on with their stuff. Be good at what you are

[@DavidVizard]

You realize the principle muppet here can do a lot of damage with purley erroneous statements.

[@jaredmartin3798]

@@DavidVizard 100% agree with that statement. However your crediatabilty is well beyond that. You can lead a horse to water.. you know the rest. You can not save everyone from poor information. There will always be another muppet to challenge you regardless. Now i'm dying here to see the next video about the polyquad heads. I have read about this years ago on your speedtalk days. I loved it and loved the out of the box thinking. Thanks for imparting this knowledge and please let your legacy be of awesome information and not of arguing. Everything i have written here is from a position of very high regard for you. if you can read something else into it then its not intended that way.

[@reimoloon]

Mr. Vizard. I’m a big fan of yours, have read all your books and some others authors too and I could tell that your wisdom is based on experience not theories. You don’t have to defend incorrect statements or miss information about what you’ve said in the past. Individuals like myself and others who respect you and trust in your work can tell when others try to discredit you. Sometimes is better to say nothing in return, not even trying to discredit the one discrediting you. That way you can have inner peace and let attacker get the heart attack because he is not getting a response from you. There’s an old proverb that says: “Do not answer the stupid one according to his foolishness, so that you don’t put yourself on his level”. Good luck and keep bringing us your wisdom through your excellent educating videos!

[@user-du8cs8sn2v]

If someone asks me how to do something, then tells me my answer was wrong. I just say 'okay'.... There's no benefit to me to put effort into changing their opinion. It's perfectly ok to simply let others be wrong and move on ....

[@DavidVizard]

It isn't when it can cost big bucks!

[@ebf1003]

I absolutely agree with your take. I've watched ew before and have found some information useful, but I can honestly say that for the past 30 years, DV's books have been pivotal in advancing my knowledge of internal combustion engines.

[@garykarenmcgruther6386]

I keep telling Eric, Flow numbers is NOT WHAT WE WANT. We want everything like you have been presenting and then more testing to show everything else.

[@The0utmode]

David, Your wealth of knowledge is amazing I've learned more about the physics of high performance engine building from you than any other book or person has ever told me. You port cylinder heads like no other I've seen nobody else cut the exhaust ramps into sbc heads like you have and you are the only one who has an explanation of camshafts above the normal "High lift is all that matters" Where as you have point out the LSA, and Duration and valve overlap has more to do with engine performance than lift. All this being said there is something I would like to debate you on and that is oil. I have seen it time and time again a good full synthetic oil is better than any conventional oil at both having less friction and having less wear. Test mighty full synthetic 10w 30 motor oil and It will beat any oil you use even if you use additives like oil extreme which I believe to be a fortune 500 company scam.

[@autonomous_collective]

DV, move on already. Eric isnt worth your time! Many people I know unsubscribed from his channel even long before your observations... I followed him for years then had to quit.... You have more important things to do like more MOPAR vidoes!

[@HSTvids357]

Jesus Christ, it's time to move on DV. I know, the surgery and everything, but you aren't actually defending your reputation from slander by doing this, you're just coming across as insecure. If you just can't let it go, then make one comprehensive rant video, provide the actual evidence to corroborate each claim you make in it, and close the book on it. Regardless of whether you're right or wrong, endless rampaging just makes you look less credible. Also, the ones who talk about and/or threaten to "beat the shit out of him", are usually not the ones who actually do it.

[@richardfawthrop8056]

This reminds me of eating dinner with top fuel racers. Now we need a race.

[@lynnrunningdeer7364]

I asked this once before. Have you considered putting your classes on DVD for sale or make them virtual? People might be able to afford the classes but not be able to get there. Just food for thought.

[@chrisstavro4698]

Stop with the appeal to authority, and "don't you know who I am?!". If you have proof, then show it. An engineer doesn't just make claims and then not justify it.

[@elchicousana2]

He is one in the few that can say... "don't you know who I am". Because Eric is an amateur tuner, obviously he doesn't know hahahaha

[@shootermcgavin2819]

​@@elchicousana2 and Eric Weingartner will still drag your ass at the drag strip any day..

[@scotthatch4548]

I'm confused .... Eric was talking about valve float which is springs and camshaft but you (David) only talked about flow... So how did you address what Eric was talking about?? And although flow quality is important the main calculation for what HP a engine makes is still CFM with a camshaft modifier

[@chevyrc3623]

That confused the hell out of me as well I know Eric says it could be solf springs and valve float at higher rpm and DV says flows and other stuff about the head and I went what Eric wasn't talking about flow weird

[@optimumperformance6998]

The reason is because DV had no involvement in the installation of the heads on the subject engine. He never also "throughly tested" the heads that came off the subject engine. That engine made very good power to start with, a proven combination. The only thing they did was equalize the CC's to keep the compression ratio the same. We still have not been told if the valve geometry/stiffness was verified because we are not allowed to ask questions. The heads were milled, still using the same pushrods? Every back yard mechanic swapping heads checks this. This has to be the first time in history a better head made less power, almost like it was designed that way to prove a point. Meanwhile in 2024 you can buy a Melling Godzilla drop in cam that picks up 50hp without even a spring change and it's got a 121 LSA....on a truck engine.

[@The0utmode]

Regardless of what you think of Vizard Eric's theory about valve float is wrong because the AFR heads having higher seat pressure valve springs than stock so if it was valve float the stock heads would suffer even more at the top end.

[@optimumperformance6998]

@@The0utmode so what was the seat pressure and cam specs of the previous combination. What did those heads flow? How can you say the AFR heads have "more"?

[@The0utmode]

@@optimumperformance6998 seat pressure on the AFR heads is 140 and stock is 76.

[@ElvinLeadfoot]

Definitely want my coffee - ear plugs - and safety glasses during the 500 hour marathon

[@nicholasagnew2792]

If Weingartner is right about valve float being the reason the AFR LS3 Enforcer heads don't make more peak power, then why does the power curve dip down and then Level Off? Valve float would only get progressively worse... David can do what he wants with his channel, you don't have to be here. Although personally I would love the 318 to be finished.

[@joshiek7839]

He won’t finish that just like he didn’t finish the SBf series

[@chevyrc3623]

That could be true but we will see after Eric puts better springs on to see what his Dyno test says I can't wait for that test to see truly what is going on

[@PatandDoopypoopy]

Spring harmonics also can cause a dip and then seem to stabilize.

[@V8Lenny]

Spring harmonics at certain rpm, nothing new.

[@PatandDoopypoopy]

@@V8Lenny agreed 💯

[@tedjones-ho2zk]

Sorry DV, you are coming across as an angry old man lashing out. This tit for tat is getting old and needs to stop. Watched Eric's video this morning and I think he's done with this, and so should you. Move on life is too short. Take your Mustang to the drag strip and let off some steam.

[@DavidVizard]

I think I already have a real problem with the accuracy of Eric's current video. It implies his tests are honest and mine are not. I am going to show that we are ither both lying or both being truthful on the LS3 flow test. One again I tender the fact that Eric is not good at reviewing stuff. He needs to stick to head porting!!

[@jamiebrown4322]

Don't know why commenters keep saying that the two of them need to stop this bickering. Eric made his rebuttal video and moved on making 8 more videos to date on his channel without a mention of this tiff. Yet DV cant let it go and keeps the one sided disagreement alive. Eric has played the role of the adult while this guy is carrying on like a brat! Everyone, lets not forget he went on one of these "don't dare question me" rants about 12 mths ago when Jon Schmitt questioned his cam knowledge. Really revealing his questionable character again.

[@shotamakarashvili3714]

So you basically don't care that Eric made false statements about DV in his video making DV look incompetent and never corrected himself nor apologized to DV? Is it good and professional behaviour in your opinion? Why should DV ignore the fact that some is undermining him with no apologies?

[@Alaska_Engineer]

Life has enough daily drama right now. Sorry but I’m checking out of this.

[@1crazypj]

Hello Mr. Vizard, Online 'discussion' is kinda interesting but not as much fun as I expected. Just watch your blood pressure. I think you may need to go through more of the video? I'm off to watch 132, havent seen much from you looks like You Tube unsubscribed me.

[@jamiebrown4322]

The more of these video's DV makes the more he is displaying he is a textbook case: "When it comes to overt narcissism, these individuals have an insatiable need for admiration and attention. They constantly exaggerate their achievements and talents, going to great lengths to impress those around them. In their minds, they genuinely believe that they are superior and more deserving than others. It's as if they live in their own grandiose world, where they are the center of the universe. One notable aspect of overt narcissism is their inability to acknowledge any flaws or weaknesses within themselves. They may be quick to point out the shortcomings of others, but when it comes to self-reflection, they fall short. This lack of self-awareness can be frustrating to deal with, as they rarely take responsibility for their actions or consider how their behavior affects others."

[@DavidVizard]

Jamie, I would have to say that you are not in a position to judge either me or Eric on the 'narcissism' subject. I don't know about Eric but there is at least one occasion a day when I have to admit I made an incorrect judgement call. You are just never there to see it!

[@jamiebrown4322]

@@DavidVizard I watch your videos. That's all I need. Four public videos from you now because someone doesn't agree with you and dare said you haven't done as much on a dyno as someone else. You clearly have a problem dealing with not being liked or not being the smartest person in the room or this would have stopped in the comments section of the original video a month ago. As I said, textbook case. No one else in the industry spends as much time pumping up their own tires and knocking others methods as much as you do.

[@ebf1003]

The willingness to attribute narcissism to DV is hilarious. Dsm 6 is going to have a confluence with webmd if that's the case.

[@newtonfirefly3584]

@@jamiebrown4322 Nonsense, misconception, incorrect, improper, invalid, claims, assessment, evaluation, from a certainly unqualified ignoramus 😒🥺😧😨😖🥴😵😵‍💫🤪 and actual arrogance thus clear self-reflection 🪞 -> projection 📽 !!

[@newtonfirefly3584]

@@DavidVizard Your reply to Jamie is certainly correct. He has no proper basis, information, knowledge to attempt to assess, evaluate as he claims. => Thus it certainly reveals his personal lacking, imbalance improper mindset, attitude, views, perspectives, perceptions via common low self-image, -confidence masqueraded as arrogance, ego to mask self-perception via clear self-reflection 🪞 -> projection 📽 !!😳😒🥺😧😨😖 Which is common among the many which comment, reply, that are called "Trolls"😲😱🥴😵🤪 As per the shown definition of "Troll" the character in stories, fables, fiction or possibly reality were placed at the bridge to control, prevent, block or permit humans from travelling, but were selected, chosen for their forceful ways, manner, strength, power, often portrayed with a very negative attitude, demeaner, disposition, ornery, etc. Such this fellow reveals about himself, more than Eric does about himself within his posted video response 😒😳🥺😨 Those which know what science, physics, chemistry, materials, engineering, Science Philosophy actually are, develop, achieve, can clearly, certainly see, hear, comprehend, determined that David Vizard is among these with extensive research, development, design, valid, repeatable, verified, testing, proper methods, results, etc.within everything he presents. 🤓 Simple, Period. 😌 Eric only qualifies, at most, as a good craftsman, machinist, within a limited realm, perhaps some may consider him a type of Technician, or mechanic, without the necessary basic, knowledge, principles within physics, engineering to attempt to claim, know what actually affects the performed 'test' results, nor determine what testing methods are valid, reliable, meaningful along with causation, mechanism, proof as a proper scientist - which Eric is certainly not among those within this development, level, knowledge.😒🥺😧😨 These are certainly clear, obvious, certain to those proper trained, developed within science, engineering as my self 😏 David is seemingly aware that extremely few that see, view, follow his Power Tec 10 series videos, read his published articles have any proper science, engineering, development, training, background, expertise and experience 😏

[@glennborek2359]

DV ,, I’ve watched your vids for quit some time now. And I’ve enjoyed watching them. But this really has to stop it just doesn’t look good.

[@unleavenedkaraiteplus3412]

Erick engaged mouth before brain.

[@joshiek7839]

I’d say the guys who’s made death threats and told a story of wanting to beat someone up has a bigger problem with that.

[@jcanfixall1585]

​@@joshiek7839if someone caused you to lose several hundred thousand dollars in the 1980's wouldn't you want to beat their ass??? I know me and most men would, but hey it's a new generation...

[@6426yy]

With all due respect DV this is getting ridiculous. Eric is showing results on the bench and the dyno, good bad or indifferent. So far in two years you haven't even finished the budget 318 we've been waiting for. Stop trashing others, it's poor character.

[@jeffallen3382]

He's been too busy screaming "get off my lawn"!

[@keith6872]

Good rebuttal DV. BTW Erics drag truck looked unimpressive when i seen it on video.

[@dinosshed]

It'd be better to see two engine guys working together on a project than reviewing/debating each others findings. Pickup the phone and make something of it for the benefit of your channel. Love both of your content.

[@karlmoltzan6196]

unscribing. I don't want this kind of drama. DV you need to quit stirring up shit. Not every one does it your way. that does not mean they are not doing good work.

[@DavidVizard]

Karl, I am doing what our channel has a charter to do. Exposing BS and if that looks like stirring you have missed the whole point of this video.

[@Thumper68]

He never said Eric does bad work and has continued to say the opposite even in this video.

[@ebf1003]

He didn't say he does bad work. He's addressing the criticism of his own review which frankly is how a debate/argument works.

[@ShortBlockCharlie]

Sad to see dv with his so called credibility he really making a fool of himself Not big fan of his. Go enjoy your golden years.

[@rollandsicard1628]

David, you have earned my absolute trust. You demonstrate the truth and data thru your videos.

[@DavidVizard]

thanks.

[@DavidVizard]

Thank you Rolland

[@brracing7861]

David I know stuff about Eric others don't. I was on Chad Spierer V-Factor porting group 4 years ago learning from Chad Spierer Racing Heads and all others. Because of them all I succeeded porting my 1971 GTO #66 Cast Iron heads for my 1976 Pontiac 455 520 Hp pump gas Budget build. Eric is not who you think he is. He threatened our Leader not once but several times. Being You Tube I cannot discuss all. If I met Eric I wouldn't shake his hand. Its lights out 1 punch delivered super hard by myself

[@kylemilligan752]

Lmao, threatened "our leader". One-punch man, lmfao!!!! Great stuff!!

[@chevyrc3623]

What did he do because from what I know Chad and Eric talked to each other before what do you mean he threatened the leader I am confused

[@joshiek7839]

So you share DVs lust for violence. Real cool there keyboard warrior.

[@brracing7861]

@@chevyrc3623 Eric likes to wants to stab people in their sleep with a Stilleto.

[@chevyrc3623]

​@@brracing7861well ok I mean what did he actually do or say without being figurative

[@rong4189]

I’m getting more excited about Vizard/Wiengartner than I am about Tyson/Paul! jk

[@DavidVizard]

Good - the more folk who actually listen to what is being said in my videos on this will realize (sooner or later) that Eric is doing an excess of misquoting. I am taking his criticisms and conclusively showing they are wrong!

[@joshiek7839]

@@DavidVizard the part where you are wanting violence?

[@elchicousana2]

Just as I said you you ​@@DavidVizard, fighting with Eric will only validate him, instead of showing how amateur tuner he is.

[@mikebrooka9395]

I'm bare knuckles on flow bench as I use a wet/dry vacuum and a manometer. Carb to port and others blocked off. Animator as well. Exhaust is opposite. Several manometer used. Bore size is based on the engine and stroke. Very interesting results for testing and the actual engine. Mikel

[@jeffalvich9434]

You are so right David back in the 1980s Hot rod magazine ran a article on how to build a specific engine. They published all the part numbers etc that included GM. A gent who we all knew down here decided he was going to build and match that engine and took his engine to Kelly's block welding here in Los Angeles..... A very well-known shop that has been in business since the 1950's..... And still in business. He rode into Hot rod magazine a month later after Kelly and his son could not find the majority of the parts that they had listed and general motors specifically stated they did not exist. He wrote a letter to the editor which was published and they came up with some grandioso excuse...... My dad was also a mechanical aerospace engineer in the early days of the aerospace programs and raced, built engines, etc including a NA flathead that turne 211 mph at El Mirage back in the mid 1950's..... I seldom believe most anything I read or see on TV shows with these guys......

[@JeffKopis]

By the way, "incredulity" means a shocked, amazed, or appalled disbelief in what you are seeing and hearing.

[@ebbonemint]

Who do you trust to give you better information? The guy whos spent his entire life studying apples? Or the guy in the business of selling you apples. I trust DV's lifetime of knowledge and information, thank you for still sharing what you know in 2024. Us young guys need the library of information your mind holds, or else we'll be stuck sifting through the BS floating around out there.

[@ElvinLeadfoot]

I want the Full Monty. DV you have one of the finest personalities a guy could ever possess. Gravity - you taught us what is actually gravity. (The weight of air)

[@someonehasthisid]

I was reading DV articles in Hot Rod ,Super Chevy or PHR since the 80's so that's that.

[@thebegrsshow]

Here's an idea, since THIS ISH is mostly about DYNO Time, and you're a Research Engineer/Journalist, surely you must pictures of ALL those thousands of hours you spent testing things, right? Just put up a vid highlighting 100 of those projects, = 100 still photos. Case Closed, everybody agrees only you have more DYNO time than anybody on Planet Earth. There's a saying people use, "Pictures, Or It Never Happened." Personally, MY money is on MY old Boss, he had Dyno's running 12 hr.s a day, 5 days a week from 1958 till 2017. There wasn't an engine that was rebuilt at his AERA Shop that wasn't run in with the Dyno Sheet to prove it.

[@oscaracme]

BINGO!

[@optimumperformance6998]

My engines used to run 100% load for 2000 hours. We only shut them down for sceduled maintainence. Power ranged from 2000HP to 6000HP. Meanwhile we monitored them remotely and processed 3-4 times the data daily as Twitter. We could look on our phone and determine which cylinder was developing a failure from data before it failed. I did this for 15 years, and was paid over a million dollars. Do I think I'm an expert or research engineer? NO. I'm just an idiot that did what he was paid to do. I respect people who display mutual respect. I'm one of 10,000's of thousands professionals that do this everyday. Not everything deserves a medal 😅 Most of the time it's just your job.

[@thomasward4505]

David vizard does toot his own horn a lot

[@jackass72]

Yeah, but in his defense, he HAS been playing with engines for a REALLY long time!

[@bobbybieln853]

WJ said if we could only race a flow bench !

[@craig8187]

Beating a dead horse , here comes another episode of Coronation Street 🤦‍♂️

[@soulcapitalist6204]

Mr Vizard inspired me to build my first SBC with his book. Mr Weingartener inspired me to never sell my old Weiand Team G SBC intake, even though it's a paperweight right now.

[@theblackhand6485]

Elvis: '...only a fool breaks its own heart'. - pomptidom - 🙈

[@petemcpeterson6205]

Sounds like DV's on his monthly cycle.

[@DavidVizard]

So a statement of facts indicates a female trait??? You need to rethink that one Pete!

[@salvatoregiovanni8967]

The concept of the Dynojet dyno was created in a Wisconsin garage by Mark Dobeck.

[@DavidVizard]

No, Mark was working in my shop when the dyno jet dyno was conceived!!!!!! I also sorted out the design of one of the first 'dynojet' motorcycle jetting kits which got them going in the first place. Don't take my word for it. If you know Mark then ask him.

[@bsbc406]

Unsubscribing. This has become ridiculous. Who cares. We like horsepower not drama

[@DavidVizard]

Do not overlook that we are making the pedaling of inaccurate info and exposing it in an effort to make sure you are seeing the facts not fiction. If this does not set well then I guess we should bid you farewell from our subscriber list. DV

[@musclebone7875]

You'll missing out on some wisdom 😆

[@Thumper68]

Nobody forced you to watch just don’t watch these videos. I feel sorry for you watching every single video every creator your subscribed to puts out😂

[@supersportimpalass]

@@DavidVizardjust let it go old man. The part where you state you wanted to beat the shit out of that one guy tells the whole story. It makes you sound like the bozo running our country into the ground that should be in a nursing home yet has to keep acting like the tough guy. It really is pathetic for someone your age to be acting like this. Possible onset of early dementia?

[@DavidVizard]

@@Thumper68 Ignoring a podetial threat is why an Ostrich buries it's head in the sand. This does not make the threat go away!!!

[@bena6852]

Deleted and reposted lol, i am really enjoying this circus

[@jeffallen3382]

He removed the death threat he made to EW!

[@DavidVizard]

I threatened TROLLS not Eric!

[@jeffallen3382]

@@DavidVizard you do know making death threats is against the law right?

[@eddiereichel9354]

Its hard for me to get this because I like to call out stupid for what it is. Sometimes when ya think someone is dumb ya dont say anything and ya might learn something. I was getting a drum of oil delivered. They showed up with it in back of a pickup. I said Hey ill go grab my fork truck. He said no worry I got it. He threw a unmounted tire on the ground and twisted that drum right off the end of the tailgate it hit the tire and bounced safely on the ground.

[@mikecondoluci53]

IM BEHIND YOU 1000%

[@jamiebrown4322]

David, your going to ask Eric to port a few cylinders of a head for you to review? Did you know Eric provides a service that you can port a few cylinders of a head, or an entire head yourself and send to Eric for review? Port a head, bag it up, post it to Eric with a note saying "please review my handiwork". Use a nom de plume if you want anonymity. What an opportunity to show the world how amazing you are and humble Eric. But I doubt you will do such a thing that has the potential to dent your ego.

[@RocketCityTech]

We all know journalists can be trusted 100%. Oh wait.. 😂

[@DavidVizard]

That might be just why I claim not to be one!

[@MrR6guy]

Eric "Mr Potato Head) is an entry level head porting enthusiast @ best, I suspect he's in financial trouble and looking to boost revenue from his "butcher flow number hax channel" I have seen some strange promoting or non promoting on various cylinder heads and been left scratching my head as to the results also noting an extreme brand bias that ALWAYS(IMO) means something is suspect as a true data hound is not interested in brands just DATA as David is and has proven over and over and time again. I'm interested in seeing if Eric has the Proverbial "balls" to respond intellectually or have the Steroids shrunk them into bathroom confusion status??

[@jeffallen3382]

You have done more damage to your own character than anything you think Etic did! The fact you deleted your death threat and re uploaded this video... shows how unhinged you have become!

[@joshiek7839]

He made a death threat? Against EW? That’s wild. Old man needs someone to proof his vids before he uploads.

[@jeffallen3382]

@@joshiek7839 in the original video he said "you're on my kill list"...

[@DavidVizard]

Trolls not Eric!

[@jeffallen3382]

@@DavidVizard hope you have a great lawyer...

[@joshuagibson2520]

Merely having a kill list says everything we need to know.​@@DavidVizard

[@doomman700]

Numbers mean a lot, talk means nothing. I have yet to see a Vizard engine beat me

[@chrisbreckenfelder7227]

Why not do a challenge on that exact head to run stock dyno numbers and tests....then both port using your own techniques and present them to a 3rd party to run and test...it doesn't have to be who is better...it could be what techniques are more likely to produce results...then the other person has learned in the process, which benefits everyone. Perhaps that would stop the pissing contest of two people that in their own seem respectable gentleman. I think this would both put each others money where their mouth is, as well as educate all viewers of their content.

[@DavidVizard]

Chris, in episode 132 our flow test cfm figures were almost identical to Erics. In spite of doing a very comprehensive feature on the AFR Enforcer heads he is claiming WE NEVER TESTED THEM. That is a blatant error. Check it out for yourself. WHY, MAY I ASK, SHOULD I TOLERATE SUCH OUTRAGEOUS ERRORS.

[@chrisbreckenfelder7227]

Then if you know you did, have proof of such things (which exist), why then continue the argument if that is the only sticking point? If you did do it and post it (132), its not worth the argument. You can lead a horse to water, but you can't make it drink. It seems, at this point, the frustration is in why he is not drinking. I think if it is to be a teaching moment, then do so thru action of showing technique over another. That isn't to harm the other, its to educate and move on. The flow and dyno will give answers along with track results. That helps everyone, including the situation and the viewers of both pages. Everyone is a student in the grand scheme of things as we all continue to learn as things evolve everyday. I've seen multiple theories on approaches to porting and valve angling, to me, it seems like a useful opportunity to test in order to prove or disprove theories instead of just arguing or throwing opinions of each other's viewpoint. To my knowledge, this is how things evolved in science and theory by challenging theories, which can lead to new revelations and better understandings, otherwise we would have never progressed this far as a society.

[@brendonjohnson1773]

I saw some DV books and an articles on ram tube flow testing in the 90's somewhere. "Most english speaking countries, not South Africa" 🙆‍♂ ... welcome anytime. I have a room if you need place to stay 🤞.

[@billlittle4285]

How fast does it go down the track, we don't race dynos or flow benches, but they are a valuable tool, I always try the same things in the car and have had a few surprises David as I'm sure you have also, keep up the good work!!

[@thomasroth4695]

This is too funny. Can you pull each other’s hair next.

[@DavidVizard]

I am not interested in pulling any one's hair - just getting the facts straight by pointing out EW's totally proven errors in his video.

[@joshiek7839]

@@DavidVizardbut you said you wanted to beat the shit out of someone. You’re a wanna be thug

[@jeffallen3382]

​@@DavidVizardno you're just interested in making death threats... Funny how you deleted that part & re uploaded this video again.

[@douglasnicholls1366]

@@jeffallen3382 As this is about the 50th time in this thread you have parroted a poorly worded comment as a serious death threat, I have to ask who is beating the dead horse now?

[@jeffallen3382]

@@douglasnicholls1366 DV said it and even deleted it because he KNOWS he said it! Ask yourself why he deleted if it was a "poorly worded comment as a serious death threat"... The outrage & angry DV is showing in these videos he is posting shows the man as lost his marbles! If you want to defend what he is saying... go for it dude! That's on you!

[@And-in-last-place]

DV are you ok? You seem to be heading into a dark place.

[@ElvinLeadfoot]

(Data Boy) Well obviously Eric has no idea about Data Sets. How futurist and also economist predict future events accurately. It’s was definitely a contemptuous delivery. When he said (Data Boy)

[@jeffallen3382]

*Data Void #fify

[@williamdavis8875]

Hello Mr DV, do you have a book on QJ Carb how to rebuild and get better proformace out of them

[@95Sn95]

I think he uploaded the same one by accident or something

[@DavidVizard]

No, the second edition is an edited version of the first - no accident or anything!

[@jeffallen3382]

He deleted the death threats!

[@jmc6940]

The opinion of 10,000 men is of no value if none of them knows anything about the subject. "MARCUS AURELIUS" I think this is a fitting quote for this topic.

[@boetagamat9748]

Just because you disagree with other people doesn't make them wrong. There's many highways to the checkered flag.

[@KCadbyRacing]

*Hard hitting?* This was "hard to watch" because the only reason I visit here is to learn more about engines and making power. I've read your replies DV about this being damage control but JMO, I think you should try to understand that anyone that's smart enough to see through BS will still respect and follow you (and the rest don't matter). The main reason I love YTube is, I get to choose exactly what I want to watch and *unnecessary Drama* isn't anywhere on my list. And as someone else commented, this video honestly makes me curious what Eric's video is about (which will help his channel) so???

[@theblackhand6485]

It seems that two guys need to get in contact... buzz buzz...'Hi there, it's me. Are we cool?' WWYD...what would Yeshua do? Good question! Lets port heads together, try to communicate, translate what ever necessary, have a fruitful meal together, love each other. End.

[@jamiebrown4322]

They have had a phone call just before DV released this video.

[@sumguysr]

Old man yells at clouds, again.

[@DavidB7474]

Hot rod and every magazine did tests, flow numbers and dyno runs. All of them possibly paid for by the highest bidder to be nothing more than a paid advertisement for who ever paid for the add. So you may or may not have gotten the best combination. And if I hear another vortec head, 383 build it will be too soon. The old magazines pushed the “high rpm kills motor” motto every issue. And today we know small blocks need rpm’s to make power. Unless you are stepping up to the actual 400 sb, anything less cid than that needs rpm’s. And I have several of David Vizard’s performance books. Lots of good info. But I watch Eric Weingartner’s dyno videos, also, also have many of his books, I’ve looked at flow numbers on websites and compared to his results, and seen the numbers, sometimes advertised numbers don’t add up. Big Flow numbers don’t always equate to more power, if the combination can take advantage of those big numbers it can and you make power. And both of you can pull out the tape measurer and measure who’s is bigger all day long. All I know is that after reading hot rod since before I had a license or could turn a wrench, I have come to question many of the articles we took as gospel in this pages. Because the numbers they claimed back in the 80’s don’t add up. Technology, measuring tools, efi, valve train tech, engine parts have gotten better since then. So it would go without saying the old combinations don’t add up like they did back then. Now I still know some old dirt trackers that have build kinda stock engines that will sing past 7000 rpm’s with flat tappet cams every Friday and would make some potent street engines. So you guys can throw it off the bridge and see who’s hits the bottom of the river all day long, all you like. I still read the late John Lingenfelter articles and Smokey’s Yunick book and like that info also. I’m in north Texas, I hope one day to go visit Weingartner racing and take my ported 882 heads up there to have them flowed. Just to see how good my work that I did years ago actually is. Hope all you have a nice day.

[@LawrenceOrsini]

Goodness. There is a reason you both have fewer than 100k subscribers and this is it. Please just make engaging content, get a better editor and focus on finishing your projects. Still waiting for the mopar to be completed - one of your most watched series - and you go off on a tangent about race mods for your new mustang or beef with another KZbinr??? Please stick to the engine content we’re all here for and let the no name head porter vanish into obscurity.

[@marklandis5407]

I understand DV's point of view, all the frustration and difficulties you've faced because of stupid liars but this is really starting to feel like beating a dead horse... I can honestly say that I used to religiously watch every video including the old lost channel, now I find myself rapidly skipping past all the nonsense... Anyone may overlook inportenent information because I definitely know I have especially since they're genuinely lengthy videos but in reality only 6 minutes of this video is really beneficial for me to watch, sorry. Unfortunately this has negatively affected my KZbin algorithm because I no longer see any of DV's videos. My opinion; I would try to get over any grudges and get back to your roots being a reputable journalist and drop this wild Trump aggression. I honestly would love to see the old DV back, it's awfully hard to listen to anymore... it's like adding gasoline to a dumpster fire. You might say no one affects you but once you've been triggered you seem to lose control... Now I also watch Eric's channel and I really appreciate his demonstration on how to & how not to Port & Polish. His videos actually show the way the port's been opened up and how to develop a proper runner along with his flow bench testing. Anywho at the end of the day opinions are like assholes, everybody's got one... We want horsepower 🐎 not horseshit! 💩

[@DavidVizard]

Mark, I would like to answer here in greater depth but I only have time to say that I don't deal in opinions. As Eric pointed out I am the DATA BOY which implies I am not the opinion boy.

[@autonomous_collective]

@@DavidVizard I think he said "data void'. Not 100% sure.

[@jeffallen3382]

@@DavidVizard he said "DATA VOID" you old man! VOID!!! Unbelievable how dense you are!

[@rexwarrensr.9832]

He did a show about me complaining like a little girl

[@rexwarrensr.9832]

He was complaining about me

[@____MC____]

When?

[@rexwarrensr.9832]

@@____MC____ few years ago

[@adamgallaway9252]

As somone who dips in and out of youtube videos as i live and operate in the real world, i think a lot of people are hooked on the youtube bandwagon. from a pure observation point of view, i look at it with my humble observation that Erics a clever bloke but is just another strong youtube presence who uses it for popularity and to spread his antics. where as David uses it as an education platform to spread a lifetime of knowledge using facts, its a bit sad that there are these conflicts but its going to be the case as they are both strong influences. David im just sorry i didnt get to meet you the last time you were in the UK , Eric i am glad i wont get to meet you because your voice reminds me of a child who isnt gerting his own way. whining by name whining by nature. 😅

[@michaelblacktree]

Maybe you guys can get a motel room and work this out. Bonus points if jello is involved. 😛

[@stooartbabay]

David , please please pleaser do a BMC 1800 engine video! There are thousands of MGB and derivatives out there and they would all watch it!!! Thanks!! Stuart.

[@bigmotorhead2908]

This sounds like the same video from earlier

[@DavidVizard]

It is a newly edited version with some supplemental info.

[@optimumperformance6998]

​@DavidVizard it's exactly the same video.

[@DavidVizard]

@@optimumperformance6998 No it is not!!!! It's incorrect statements like this that I have to stand against on an almost hourly basis.

[@autonomous_collective]

@@DavidVizard By editing, you erased our comments. Was that you intentions? I prefer not to have to comment twice.

[@optimumperformance6998]

@@DavidVizard please state exactly what is different. No death threats?

[@LoneWrencher]

kids play games+sticks and stones can hurt your bones but woulds cant hurt you,who cares about an argument,im looking for engine and car info ,not sat nite fights

[@LoneWrencher]

im sorry but this fighting made me unsubscribe

[@ElvinLeadfoot]

DV - is this turning into Dr. I Ben Sniffensalts? The Director of NOSA NASA’s Obvious Shenanigans Advertised? I’ll send everyone the link to Montagraph Aka - Dr. I Ben Sniffensalts

[@jarlnieminen4307]

Scientific process remove as many variables as possible. Engine dyno removes a lot of variables, thats just good process on his behalf.

[@9vdc500ma]

As a engineer

[@aaronliddell4280]

This is getting old…

[@itachiuchihathechosen1466]

David Vizard Don't ever Forget you're Belong to the 1% of Geniuses People of the World God Bless You.Protect Your Mind From the The Abundance of Fools We have in the World they won't even grasp a 10% of what you know even if you explain them 3million times

[@ThisFyneOleTruck]

Guys please stop, your both great. I have a set of Erics Brodix heads, their great. His work was fantastic and the motor runs spot on. Lets stop all this infighting, time is too precious and there's not a lot of it.

[@DavidVizard]

Let me ask if your livelihood depended extensively on your tech reputation/know how would you defend such - or just let poor and inaccurate criticism's pull you down. This only requires a yes - no answer!

[@ThisFyneOleTruck]

@@DavidVizard I would say my piece and go on to be honest. Mr Vizard your a god amongst car enthusiasts serious and the lay man. You have lifetimes of experience that speaks for itself, it doesn't need defending to hard the proof is there. I think after a point good energy is wasted, no need to keep exchanging blows. I hate seeing two skilled people waste precious time in such a manner , I get defending your honor and reputation etc, I do, I just spent nearly the past 8years in bed, my heart stopped several dozen times, I've had 219 massive seizures and a stroke. I was never supposed to live past the 3rd seizure. I've had to learn All motor skills over an over due to seizures. I have severe CRPS, Tardive Dyskinesia and Stephen Johnsons because of the injuries and meds that I sustained defending honor, mine an others. Your the inspiration for what is probably my last build and nearly 30yrs of building engines, I have a 355 that is almost straight out of your books. It's a work of art. I'm nearly done and ready to put in my Square Burb. You both were an inspiration to my build, I can barely stand most days and shake like MJ Fox on a good day and am in a living hell 24/7 from the pain but I still smile and am doing all I can to finish my vehicle so I can enjoy my handiwork and to leave my lil brother a work of art from those who inspired me to live the life I've lived. Please sir, let's just shake hands.

[@elchicousana2]

Other tip. Block and ban off your channel anyone that say some thing that "stop using authority speech" or something demeaning to you or your channel, because otherwise youtube lgorith will start showing your videos taht would dislike and harm your videos, b3cause yourube doesnt care abour eight or wrong, youtube will alleays care about views and controversy (even if thwt controversy harms you).

[@JackBurchnell]

Today 6/09 /24 I just wanted to say I have found that people who are not able to comprehend your level of expertise and wisdom and knowledge are jealous bitter and oppressive they hope to get all all the glory I watched episode 28 over and over at least 12 maybe more times I took notes and I studied them and I found out that every thing you taught me made perfect sense I am working on a set of my first 461 casting an I feel like a pro I am sure that with out your your teaching I would never have been able to do it right

[@denniswhite2768]

Just asking, Is flow more important than compression. Do you sacrifice compression to get better flow.

[@chevyrc3623]

You would loose a lot compression when you de shroud the valves or take a lip out of the chambers or whatever else. The gains of flow sometimes not everytime but sometimes could make up the power that you lose in compression

[@jackass72]

@@chevyrc3623 Agreed. There's static compression ratio and dynamic compression ratio, which relates to volumetric efficiency (how much you're filling the cylinders). A lower static compression ratio can make more power if you improve the volumetric efficiency enough.

[@chrishensley6745]

Respect your Elders....

[@billrobison6314]

Life is short. Don't waste your time.

[@RATTL3R186]

You are both grown men. Grow up and discuss it like men. Misunderstandings and egos don't mix. Knowledge is to be shared not hoarded.

[@user-du8cs8sn2v]

DV i understand your frustration, but this type of video hurts your channel. You don't need to defend your reputation. I bought your A Series book decades ago and have read most of your other publications. Your viewers are others like me who already believe in you and don't need convincing of your experience. If i see someone criticise you, i write them off as a moron, you dont need to respond to them. Please don't waste your time making this type of if video, its unnecessary. Make technical videos please.

[@timtaylor6147]

The more you know The dumber you get Tag

[@seanb250]

This is just sad 😒

[@jeffallen3382]

Funny how you took down the desth threats you made towards EW...

[@DavidVizard]

Never made a death threat to Eric. It targeted Trolls.

[@jeffallen3382]

@@DavidVizard so you took down and deleted the death threat to trolls? Sure David .. you need to be honest and apologize for what you said and did! You lost all credibility! Hope you have a good lawyer!

[@DavidVizard]

@@jeffallen3382 Just go back and listen to what I said not what you think I said.

[@jeffallen3382]

@@DavidVizard I can't you deleted it you old man! Unbelievable! You really think we didn't hear what you said? LOL

[@jeffallen3382]

@@DavidVizard you deleting it and reposting the video without the threat makes you look even more dishonest! 🤣🤣🤣

[@chuckhoward3626]

I learned straight away that we don't race Dyno's or Flow Benches - we race Cars! Everybody has one and it don't mean nothing if it does not win races on Race Day. As per Data, it don't mean a thing if we can not apply it to winning. I hate engine builders for just this reason - none of them talk on the same plane of reality... You guys need to pull your heads out of your asses and work together for better or worse: there are winner and loser - which do you two Clowns want to be?

[@brettjasonheadinventor]

you only promote products that dosent affect your business and what you understand.