Mission Impossible - the big cylinder head challenge.

In this, episode 80, DV moves on to part 9 of the St Judes charity mission impossible 318 mopar build. Here he shows how to do just a metal removal job to increase the intake ports power potential by about 25%. You will find this to be one of the most informative intake modification videos on the internet - guaranteed!

[@cudabeenios1]

Charles Servedio has been an absolute Britannica. Every now and then someone needs to step up and he did!

[@servediocylinderheads]

Thanks!

[@robertwest3093]

You're right there! Charlie posted video updates with just about every area he cut on.

[@blairlindsay5791]

🇬🇧

[@jeremiah5928]

Everyone needs to give @charles Servedio cylinder head porting and flow bench KZbin channel a sub if DV trusts him with his heads you know he's not just good but exceptional

[@jeppakongur]

This is not David but a Nigerian scam !!!

[@christophergriffin8344]

C'mon you should be able to tell that from his videos alone🤘

[@dennissherman8776]

Your attention to detail is second to none. The information you share is priceless. I hope people appreciate it. Thank you David

[@jeppakongur]

This is a Nigerian scam

[@alfredvigilotti3709]

Always loved listening,,and taking to, knowledgeable folks expertise on engine machineing and building,,of Racing automobile's,,helped me immensely,on working on,and building my cars,and others 🏁

[@Hogiewan1]

I did some of my postdoctoral training and research at St. Jude. The experience changed my life and it’s my charity together with MD Anderson. Good on ya’ll

[@jeppakongur]

This is not David but a Nigerian scam !!!

[@tonyschiffiler4816]

Those heads are going to flow , the 318 will breath. Thank you DV.

[@tonyschiffiler4816]

Breathe

[@brianbridgeman6877]

I've got to hand it to you all, it has been really fun and informative to follow this build. Just great grassroots tech and ingenuity that anyone can follow. Charles Servidio sure is a master with those porting tools.

[@lesgaal4017]

Good to see you back David.

[@jamesmackinlay4477]

172 cfm to 225 cfm that is a huge improvement considering the valve and port size the exhaust manifolds I think will be the worst part of it all then the carburetor learning a lot from these videos.

[@Patrick-xd8jv]

The carb and stock exhaust manifolds

[@philzellmer6073]

Great Series DV!...Great info too!...Much kudos to you and Charlie as well....

[@terryheimerl8674]

Thank you David, always a pleasure to sit in on your videos. Terry from Australia.

[@stuartclements9290]

Yes he is brilliant.

[@johnelliott7375]

God bless her and you all this Lent season! Have a great weekend and afternoon!

[@kennethstaszak9990]

Watching these videos almost makes me want to take my assembled but not started engine apart to check my porting work to see how closely it matches yours. I think I did a pretty good job from reading your books but I'm starting to second guess myself.

[@jeppakongur]

This is a Nigerian scam

[@kennethstaszak9990]

@@jeppakongur I know. Whenever I see that in a video comment I click the three dots to the right and report it as spam.

[@FiteTheGoodFight]

Glad to see you back!

[@jeppakongur]

This is not David but a Nigerian scam !!!

[@clutchkicker392ison5]

THANK-YOU , one of the most interesting series on the whole web . Luv ya work mate .Cheers

[@MidnightOilsRestoration]

Wonderful series David! Thank you all so much for the hard work on this engine! Chrysler guys around the world have been waiting a long time to see the 318 engine (that was cast aside long ago) prove it's worth! For a great cause, and with no one better to prove it than the legend himself... hallelujah! 🙏👏👏👏😊

[@matthewsmith6486]

Thanks for all your hard work on this project MI. It's been very interesting so far. I'm very excited to see it all come together and smash the project goals!

[@matthewsmith6486]

@@DavidVizard ????? Scammer?

[@edsmachine93]

Good information. Nice work David. I would say flat mill the heads .045 would be a good start. Thats where alot of people started back in the day. I have never angle milled Mopars. That may be something to ponder. Thanks for sharing. Take care, Ed.

[@jeppakongur]

This Instagram is not David but a Nigerian scam !!!

[@davidresar8256]

DV makes it look easy! You have to try doing it to appreciate what you see here. Absolutely amazing!

[@jeppakongur]

This is not David but a Nigerian scam !!!

[@stevesadusky8634]

Another excellent video and teaching lesson. Thank you David, keep them coming!!! 👍👍👍

[@jeppakongur]

This is a Nigerian scam

[@JustMoparJoe]

Excellent stuff! This was what I was waiting on. Thanks David and Andy

[@justinschmidt9180]

Thanks again DV this is what ive wanted to learn since i was a young man! I really do appreciate you giving away the knowledge that for so many years was kept secret

[@jeppakongur]

This is not David but a Nigerian scam !!!

[@patrickmazzone9066]

Excellent work David Excellent work . I have learned a lot by your books since the eighties and now God Bless You Keep it up Thank You

[@vipottaja]

I have milled 318 heads .090". It made them pretty close to closed chamber heads. The pistons still were about .1" below the deck though. But no problem with the heads with that milling, except that you had to take that in to account with the intake fitment and the blocks end rails. If you mill the intake faces, the valve cover rail may become really thin.

[@jeppakongur]

This is not David but a Nigerian scam !!!

[@DependableAutoTruck]

What little i know about porting learned from Tim Connelly worked at dyno center at dodge he said pretend its a road you want a smooth road. And never gasket match port match gasket matching usually causes a small valley makes turbulence.

[@DavidVizard]

FOR THE SECOND TIME - I DO NOT KNOW WHO THIS GUY 'Tele.gram.me.@DavidVizard1' IS BUT IT IS NOT ME!!! Reply

[@carlosfgarciasepulveda5927]

This is gonna be good!

[@psmopar]

And it was!

[@carlosfgarciasepulveda5927]

@@psmoparI never thought I would see someone with the level of knowledge and experience David has go so in depth with a “lowly” 318 cylinder head with small valves. I’m so excited for the rest of this series.

[@psmopar]

@@carlosfgarciasepulveda5927 We use to use the 273 in the 280 stock E class hydro when boat racing. We had to run a stock motor but I now know there are many things we could of done " stock mods " that were not in the rule book that could of produced more hp. There are a lot of small block mopar fans that will get a big kick out of this entire series when done.

[@scotteric8711]

​@@psmoparThe LA318 marine was a good engine. I've seen a lot of guys repurpose them for the street.

[@david929190]

I just watched an Eric Weingartner video review of SBC head another guy had done. Interesting to hear Eric talk about keeping the tail in the bowl because it keeps fuel in suspension and then see David talk about removing it and it not really mattering.

[@sbf_fox2434]

Thanks so much for taking the time to explain how to port this head.

[@JimZagg]

I have heard stories from back in the day when local stock car guys racing flathead Ford v-8 engines would heat up the cylinder heads and add brazing rod to fill in the chambers to raise the compression. Then surface them as much as possible.

[@victorthecarguy3126]

Very interesting topics. I'm always looking forward to the next info packed video.

[@DependableAutoTruck]

In the past have tried pushrod holes and inserted thinwall steel tubing sealed and pressed in and ported over to it. On one offset honed which offset pushrod slightly

[@mrrberger]

Banks Power are great at presenting technical detail. DV you have the knowledge, it's hard sifting through the booms, clicks, sidebars and subscribe shaming to get to the quality information that makes your channel.

[@DavidVizard]

I do what I think it takes to save kids. So far our team has raised a healthy 4 figure amount in a little over 3 months.. How much have you raised?

[@mrrberger]

@@DavidVizard Really, you're flexing? Ok So I started a food charity giving up my time, roping in people and doing collection and dropoffs. I attend Church every Saturday morning to give food to about 70 needy people and on occasion support others with the extras (including during covid, the police and fireies). So there's the answer to your question however it's irrelevant really. The point of my comment was to suggest you focus on entertaining as successful YTs all know it's entertainment that gains Subs. Pops, Bangs and Subscribe shaming is you doing a disservice to you and my comments were for your benefit. Yes I purchased a couple of your books over the years and I seem to remember you were a proponent of cutting through the guff to dial in on the measurable results. YTs are focusing on the first 7,20 and 40 seconds of their Vlogs as the metrics show that's the make or break of interest, you're still running your 2 min channel reel. People will be skipping that in-perpetuity and your viewed ratio will be at the back of the pack. Quodos for your career in ICE and motorsport, grow up for viewer shaming. My reference to Banks presentation stands, just like my uplifting of you to Banks when he shamed someone with less ICE knowledge.

[@timsprojectcar1875]

I milled .100 off a pair of 340 j-castings. They worked fine.

[@jeppakongur]

This is not David but a Nigerian scam !!!

[@timsprojectcar1875]

@@jeppakongur Hi. Thanks for the heads up

[@slantfish65sd]

I'm so glad I subscribed to your channel excellent information this is a video I will keep going back to and referencing

[@DavidVizard]

@tele.gram.me.@DavidVizard1 Not DV!!!

[@raybrensike42]

Love the Mission Impossible series.

[@pmd7771969]

I remember spending days on cylinder head porting to be disappointed on the dyno with at best 20 to 30 hp. Loads of time put into doing porting. Bloodviking

[@ahoneyman]

This may sound silly but why not start with an 85-91 318 block and heads? They have smaller swirl port chambers and roller cams. I know this is the block Junkman Tony saddled you with but you can still trade. Part of budget builds is starting with the best factory pieces to fit your needs. The price difference between a 1973 and a 1987 318 is negligible in the wild.

[@EMP_castlebravo]

Heart goes out to Ed. Wish him all the best.

[@darrenkite8184]

Hi David , everyone involved with this has and is doing an awesome job to the motor and for saint judes .. my question is , ( remember I’m an Aussie 😅 ) with cast heads can you weld cast heads to fill the chamber up to boost compression instead of taking 100 thou off the head to increase comp .. this will also effect valve geometry ( as you would know ) plus old school mechanics do say it can heat your motor more ?? Apparent quench part of the heat distribution of the head.. cheers

[@ziggassedup]

Thanks Dave.

[@gergatron7000]

Hi folks, I was wondering what your opinions are of the Ford Cleveland 2V and 4V designs. There are many examples today that are still very competitive despite the design being over 50 years old now.

[@slicepizza3263]

Arguably the best small block heads of the 60s and 70s but we're here talking about mission impossible 318 parts.

[@moyadapne968]

I saw a machinist mill off the exhaust ports on a 4V 351 Cleveland. Then he made up a steel adaptor to allow the exhaust to exit at a better angle. Made much more hp.

[@kennethstaszak9990]

2V heads had a poor open chamber and reasonable ports while the 4V heads had a good closed chamber but the ports were to big for anything but high rpm race use. The Australian heads were a combination of the 4V chambers and the 2V ports. When combined this way the results were positive.

[@overbuiltautomotive1299]

good show

[@morelanmn]

Thank you

[@jeppakongur]

This Instagram is not David but a Nigerian scam !!!

[@yallainrite3658]

Nice job! You completely eliminated the pushrod pinch. I wish I had made that tool when I did mine. I was afraid to cut into the pushrod bore. Plenty of meat there though.

[@hotrodray6802]

Most heads the pinch is not the restriction, as per DV.

[@yallainrite3658]

@@hotrodray6802 I think in the case of the 318 it is though, hence the removal.

[@EberRodrigoPereiaXarao]

Grande Mestre. Muito obrigado por dividir seu conhecimento e doar parte de seu tempo.

[@jmflournoy386]

Heads went from the earlier wedge to the open chamber for smog reasons. Now you can make them work at high rpm (above the torque peak as in drag racing) and with octane but they suck on the street. We used to weld up those chambers then developed special pistons Today you can get aftermarket heads with much better chambers or use Magnum heads I would never use an open chamber head on a street or motorhome or marine build. I hate detonation. MA Mopar kept dropping the compression which requires more throttle to make the same hp and makes more heat. The cam that came with those heads had a really late close to give a faux egr input charge exhaust dilution also makes heat. You cannot make those heads without creating quench. You cannot make those heads work with any cam without race gas unless you do not use throttle at lower rpm, YOu can fly cut to equalize the chambers then use dome pistons into the flycuts with a dish on the non quench side (to give whatever compression is desired). I would only do this on a matching number restoration ( i have done on 340 but not on 318) It's easier to get the piston pop up with a 360 crank in a 318 or 340. (or 20 years ago use a 4" stroke 10 years ago I'd start with a MAGNUM If you are running a .450 lift cam try a cut down oversize valve with a 30 degree seat Looking fwd to discussion of valve heads and smaller stems. LA has short spring height so I usually install longer valves and relocate the rocker shafts which needs to be done to get the geometry right anyway

[@toast47624]

I never ever hit the bell for any channel at all! But I hit your bell.

[@johnelliott7375]

Good morning to you all and I hope that you have had a great day so far!

[@johnelliott7375]

I'm sure that there is and I will continue to do so by watching the shot.

[@PhaseConverterampV]

Muggy weld or flame spray quench pads in your chambers if you cannot machine enough to clean up . I’ve seen old photos of race guys experimenting with weld. Might work, might crack if not done to spec.

[@bobgyetvai9444]

Brazing also works just dandy . Just do it right with normaling back to ambiant temp .

[@kazzxtrismus]

the more these guys do the more i feel like the aftermarket just didnt care to try when it came to mopar

[@carlosfgarciasepulveda5927]

The sbc and bbc got almost all of that sweet R&D from the aftermarket. Almost makes me wanna get rid of my Dart to buy a Nova. Almost!

[@shotsrodder]

Amazing process David 😎

[@jeppakongur]

This is not David but a Nigerian scam !!!

[@renwickconolly2839]

AWESOME as usual sir.. I would really love you to do an overview and flow correction exercise of an Oldsmobile head.. I am hoping to do a backyard build of a junkyard Old 403, and i believe the lightning exercise would really benefit that engines's block design (windowed mains).Thanks for considering🙏

[@davidreed6070]

I've wondered if you can take the crank out of the old 400 oldsmobile engine and put it in the 403 block. If so it would make a large ci engine

[@a4000t]

@@davidreed6070 The problem with 403's is the weak main webs,they crack even as 403 CID. We had alot of cracked blocks come thru our machine shop back in the day.

[@davidreed6070]

@@a4000t a friend built an old 400 oldsmobile engine and put it in a coupe, it was a strong engine. Pretty impressive.

[@nobiden3134]

Double WHAMMY🤣 hope you watch Mortske Repair..

[@samneva3693]

Kiitos!

[@johnelliott7375]

Yes please David I couldn't see above the hand. Thanks.

[@hotrodray6802]

About 12 yrs ago I saw a metal spray gun that sprayed zinc metal, kinda like a hot glue gun. It was used to repair rust holes in body work. Wonder if that might work to reshape ports? 🤔

[@jeppakongur]

This is not David but a Nigerian scam !!!

[@MidnightOilsRestoration]

Yes I remember that advertisement too! It seemed to disappear just as fast as it came onto the scene and I believe someone bought him out of the design.

[@danlabonty9720]

They have spray transfer welding. You pre heat base metal to about 500 degrees add powdered metal to spray gun and spray ypur build up. Check Adam booth machine on you tube. Most of the time it's used to build up journal diameter for bearing fitment on shafts.

[@jockellis]

DV, you need to have a cheap Chinese ultrasonic thickness testing meter. It should tell you the answer. The answer may not be what you were hoping for as mine weren’t when I found that the crowns on my Porsche 914 pistons had crowns that are only 5.9 mm thick.

[@dang5553]

First time I’ve seen a mopar SB get opened on the bottom unless you moved the push rods.

[@bobwhite4344]

great info.

[@Sludge73]

Six pounds, that's amazing!

[@jeppakongur]

This Instagram is a scam artist posing to be David !!!

[@Sludge73]

@@jeppakongur I hit report as soon as it posted.

[@doughelmle6575]

Hi DV .love your work and have been following you in magazines and your books for many years now. I have a set of trick flow 190 CNC ported heads for my 408 mopar . Can i just bolt them on after a good cleaning or would it be a benefit to use a cartridge roll and smooth out the CNC marks in the intake and exhaust ports?

[@DavidVizard]

Use as is.

[@pmd7771969]

Cadilitic converters came out in 1974

[@smallengineexpert6607]

GREAT info poor audio, keep the clips rolling learning much here!

[@jeppakongur]

This is not David but a Nigerian scam !!!

[@slicepizza3263]

Great information👍 . What is the thinnest you would make the bowl thickness?

[@slicepizza3263]

Scam message ???

[@jeppakongur]

This Instagram guy offering prize's is a scam artist posing to be David !!!

[@davidreed6070]

We should give everything and anything to all children

[@jeppakongur]

This Instagram is not David but a Nigerian scam !!!

[@jmflournoy386]

25:40 outer wall nearest cylinder center? inner wall nearest the cylinder (wall?) looks like that port floor could use a fill good vid

[@jasonnielsen2125]

Hello David, I noticed that the roof of the port has been welded. Did you have that done to achieve the port shape you’re after? Or did it just happen to be there from previous work? Thank you.

[@jeppakongur]

This is not David but a Nigerian scam !!!

[@pmd7771969]

You can't put larger valves in when the seats are almost touching now.

[@pmd7771969]

That valve is not punched dead center.

[@bcbloc02]

If anybody had a set of these castings junk I could mill them off the deck until they got too thin to determine what could be done. Just by looking at it I bet you could get at least .150 off it. .250 probably would be pushing things but might be possible.

[@shortturbo]

The head Charlie is showing is a quench head. ????

[@servediocylinderheads]

Yes, 302 casting number quench head. The worst flowing!

[@purestress2597]

at 14:40, could it make more sense, if we say I'm being very cheap, to keep the stock cam if changing it would upset my ecu, and run a flow ball at the specific lift I know my cam will give me?

[@cdiperformanceparts4364]

How are you taking off the 1/4 inch of guide? Thank you and great videos

[@williamherring5441]

Thanks,DV…..v/r wh

[@davel4449]

Would be a lot more easier to understand where to remove material and what shape to give it with the cutter wheel with a sharpie pen

[@Christopher-re2hl]

Can a bowl hog be used to carefully remove most of the metal first then shape it with porting bits?

[@todjordan604]

Are your utb vids available for purchase? (as my youtb prime has the valve train tips in seemingly mixed up random order).

[@Akya2120]

PLEASE do a diesel series!

[@jeppakongur]

This is not David but a Nigerian scam !!!

[@robertwest3093]

Did you say Helgeson i bar, as in Dr. Air Helgeson the porter?

[@pmd7771969]

On a drag racing car you will bring your rpms up. So liten8ng the assembly to rev quicker is not that important. If you hit the throttle off idle it can be an advantage. If you aren't skilled and make a mistake and gouge the crankshaft. Oh boy.

[@RichieCat4223]

23:36 Instead of JB Weld couldn't you sleeve the push rod bore ?

[@jeppakongur]

This Instagram is a scam artist posing to be David !!!

[@scotcoon1186]

Someone did that on an engine builder challenge for one of the mopar magazines. Rules said no epoxy. They siliconed copper tubes in.

[@hunnybunnysheavymetalmusic6542]

Charlie is doing some GREAT work! (~_^)-b

[@TheProchargedmopar]

👍💪

[@DavidVizard]

@Tele.gram.me.@DavidVizard1 NOT DV!!

[@Arthagnou]

@ David (or anyone) I have some Gen 2 Viper Heads...Who might be good to hand these to, so as to optimize them. I dont want a race head, but I do want it to be, sorta what the engineers SHOULD have designed a performance street head should be. Who would be good?

[@jeppakongur]

This is not David but a Nigerian scam !!!

[@Arthagnou]

@@jeppakongur i got that, thanks for the heads up!

[@joe-hp4nk]

After all the lighting of the rods and crank the assembly has to be balanced. Where's the savings? Balancing is expensive.

[@DavidVizard]

I will show how I balance rods and pistons for nothing. Way back I also made my own crank balancer! DV

[@psmopar]

If you're going to build an honest race engine they all need to be balanced to be done right Dave shows you a way to do the pistons and the rods all you need to do is take in the crank and have the balancer calculate bob weight for journals.

[@jeppakongur]

I feel like a fool, i got fooled by the guy posing as David here on Instagram on the channel here offering prize's 🤬

[@danielcole6157]

Stop now and go get a318 poly.

[@NotSure723]

Does anybody know where I can get a calibrated Helgesen orfice plate?

[@clutch5sp989]

I could care less about more HP...I want dependability. I need my engine to start and run every time. This means start & run for long periods of time without trouble. Hard to find info on how to make your shtuff dependable.

[@pmd7771969]

Why is he talking about crankshaft listening on a cylinder head video

[@jerryhatrick5860]

Lmao this thing should have been done long ago. Aubscribe make me money il donate a luttle to st judes lmao. Look people just donate. Send it direct to st. judes ten bux a month. Its easy simple and no middle man.

[@scotcoon1186]

They are going to auction or raffle this engine off and donate the proceeds.

[@DavidVizard]

I DO NOT KNOW WHO THIS GUY 'Tele.gram.me.@DavidVizard1' IS BUT IT IS NOT ME!!!

[@briantayes2418]

There's ONLY ONE David Vizard and we are all the wiser for knowing you! Thanks David!

[@pmd7771969]

Most hands are not steady enough to do this kind of work. You'll ruin your heads.

[@craigchiddo2794]

Could you weld up the chamber so you can take less off

[@jeppakongur]

This is not David but a Nigerian scam !!!

[@slicepizza3263]

David, is someone posting scam messages? Win prizes?

[@slicepizza3263]

David's replies are from ​@David Vizard Any other are probably a scam

[@DavidVizard]

@Tele.gram.me.@DavidVizard1 What's this? DV

[@brucecapron9344]

I would spend a fair amount to DV the Uncle and whoever else to buy a well written PDF book and download able video series. I'm just saying.

[@jeppakongur]

This is not David but a Nigerian scam !!!

[@briantayes2418]

David's book "How to port and flow test cylinder heads" has all this info in it and great stories too. His book "how to build and modify Chevrolet SB cylinder heads is another one of his awesome books. I have almost all of his books they are great and affordable.

[@janwillemsteenhuisen1550]

Ze mot heur klit ook nog missen met dur flaporen.👩‍🎓

[@MP-pz9oe]

👆 you have won a price DV 🎁🎊🎉⚰️