Viewer tells us what's wrong with my valve job!

Viewer schools us on valve job problems, so we share it with you!
Powellmachineinc.com
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@JAMSIONLINE
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[@kenbergelt6975]

This gentleman here has explained everything so patiently and has been so respectful in every way. For me, that says SO much about him and his character.

[@TOMAS-lh4er]

Even Ray Charels would see the leak " !!!!! Your killin me , Ha,Ha !

[@FriendxA]

who is "Ray Charels"? @@TOMAS-lh4er

[@tomstulc9143]

I have a half dozen sets of heads. Will gladly let him practice screwing up on them. An I won't charge usage fees for the practice heads.

[@stephenmadden6480]

Agree

[@danielminchew8782]

​@@tomstulc9143 Your Sir are part of our problem as professional techs...

[@SosopChabot]

I admire your patience with keyboard mechanics, it reflects on your business success. Keep on trucking brother…

[@powellmachineinc3179]

I appreciate that

[@SocketSlinger]

He's definitely got more patients than myself and most.

[@loundclear9279]

@@powellmachineinc3179 You tube mechanics? Where can I apply lol Bra keep it moving your doing great and great on explaining things i support it 😃

[@jeffreydurham5342]

It's amazing to me how many people comment on subjects that that they know nothing about like they are experts.

[@dano7480]

Yeah no doubt, you can tell he cares about his work. It would be better if he could focus on what he does without worrying about the keyboard mechanics. If I was him I wouldn't even bring the morons comments up but that shows you how much he respects his work.

[@JAMSIONLINE]

Appreciate the shoutout, and more importantly appreciate the way you approached the scenario with the viewer... When we choose to put our work on the internet, we open ourselves to the criticism of the world... That includes some of our peers who are qualified to offer criticism, as well as the less qualified individuals who still feel the need to criticize! But it's important to take the time to educate, and this was a great example! 😀

[@powellmachineinc3179]

Thank you, sir!, yeah, it's tough sometimes to even make a coherent thought out of some of the responses... but overall, the responses on my channel are overwhelming positive,

[@timblossom8904]

I appreciate guys like you that can take the good and bad and still keep sharing. I have often wondered how many people refuse to share the knowledge they have with the masses because of the negativity that follows.

[@2high2flyfpv88]

Ain't that the truth.@@timblossom8904

[@jimw6991]

I am a mechanical engineer but worked my way thru​ college machining valves, heads, etc. Wondering in last video you said if valves leak air then they will leak mineral spirits. I don't recall ever trying this but seems possibile that with air pressure you might find a leak not showing with fluid? I say this because we 100 percent air check driveshaft slip yoke plugs to be sure they wouldn't leak trans fluid when installed in a vehicle. Air would find leaks fluid wouldn't. We did this at Dana Corporation as part of thier procedure to build OEM driveshafts for the big 3. That said your plunger explanation as likely cause of issue seems most logical, not sure why mechanic who dissed your work wouldn't have checked it before pulling a cylinder head. Easy to set up a dial indicator and compare position of plungers on a couple of lifters. Thanks for making the video. @powellmachineinc3179

[@KX6D]

I watch your channel too. I'm retiring and moving to NW Arkansas where I'll be working on classic wood boats, rebuilding their engines, and hope I can find a good machine shop like you guys!

[@daveleighton4683]

If you were my service provider, I would stick with you through thick and thin because you have treated this issue with utmost seriousness and the way you resolved the situation was completely professional and you didn't quibble with the client. You were a man of honor in this instance.

[@Haffschlappe]

Me too and I am from Germany

[@trentm7964]

As a machinist of 30 years myself. You are someone i would trust with my parts. And i don't trust very many people. Take care my friend.

[@charlesg5085]

He needed to check that runout and machine to spec.

[@FastHemi]

Same here, 33 years and I agree this guy is awesome and trustworthy

[@eriklarson9137]

I wish the owner of that head would poke his head in this comments section. Lol. Although, I bet he is so smart, he knows more than the whole Internet so no one could tell him he is wrong.

[@gerradcraig6370]

Yeah no shit, duh… obviously he’s trustworthy and knows his shit, it doesn’t take a rocket scientist to figure that out

[@jimdiamond8246]

The trouble is people are having an opinion but have no engineering degree or experience .I have over 40 years in my industry and have similar issues with people having a opinion on some thing they have no real experience on the issue .the internet and the world is full of these people .

[@Brocracks]

I ran a machine shop right up the interstate from you. I walked away after 10 years because I was tired of fighting with people who don’t know what they are talking about. Some manager, quality guy or purchasing agent always knew more than me. I wasted time and money trying to educate people that just don’t get it. I understand what you are doing and I agree, but as time goes on and your channel grows you’ll have to ignore the nay sayers Keep doing what you do.

[@powellmachineinc3179]

Yep, I agree, 💯

[@eriklarson9137]

@@powellmachineinc3179 It's probably worse than ever now. People watch one video, and they are experts and no one can tell them different.

[@yafois988]

@@eriklarson9137 Add the fact the event of woke-mellinials-Gen X-Y-Z, UHG!!!

[@Elkarlo77]

@@yafois988 It's the Internet-University not the 'woke-mellinials-Gen X-Y-Z'. Especially as those most likely won't let their valves be done, those are most likely from the other side of the political spectrum. The Problem is a state of mental barricading and bias-confirmation, which both sides do. Keep your mind open and accept that something doing his trade for several years has more experience in it, than the hobbiest which does his third project. Internet/KZbin University is nice but you need to know the limits of it. I am doing 1st and 2nd level Costumer Service as a technician for over 25 years and of course i am always wrong with certain cliente, and when you work at the Problem suddenly they start to ramble about politics, then you know that they are entrenched in their mind and you need to be careful.

[@richiesrestorations4883]

​@@yafois988💯

[@jackpalczynski7884]

Ray Charles would see the leak. Best laugh I've had in a while.

[@jameslue-a-king9824]

Quick, fast and in a hurry, did it for me...

[@DutchKC9UOD]

That is so true, a leak test over an hour would go through the rings! Lol

[@ByronTabor]

When you know you're right, and have proved it, it's best to ignore those who claim your wrong. Enjoy the channel, keep up the good work!

[@SR-xk3oy]

You don’t get content if you ignore it though 🤷‍♀️

[@shawbros]

"ignore those who claim your wrong" you're

[@tomdavid5405]

Some people are hell bent on being rt I believe you are correct I am 68 and been around motors all my life I think the lifter could have been pumped up or someone didn't know how to adjust rockers correct

[@jameslue-a-king9824]

Byron said it right...

[@thorwaldjohanson2526]

It's a great opportunity for education and learning. I'm glad he showed it and not just talked about it.

[@brocluno01]

Good episode. I'm 3/4 of a century old. Been playing with motors since I was 10. I agree with you. Valves will seat and work with way more variation than shown. Think old 200K motors that still make compression with valves you can wiggle with your fingers 1/8" ... 😊 The only way to get that black smudge on the seat is to have combustion gasses blowing by the valves. The only that happens is the valve is held open ... The "customer" had a valve train issue other than the machine work 🙃

[@user-yf3gx3jd8o]

Absolutely

[@powellmachineinc3179]

Exactly!!

[@rmiller334]

Yup

[@richardhertz8996]

Agree 100%. Before I even watched the video, I saw the picture and said to myself, "Something was causing the valve to hang open". The worst valve job in the world wouldn't cause the customer's problem.

[@GrandPitoVic]

You are so right. He just didn't know what was happening and because of this he had to take it all back apart. He figured he would back charge Powell so he didn't have to do it for free. But he charged him alot more than should be allowed.

[@jaredmcquiniff6174]

It’s funny how the guy on KZbin with a professional machine shop knows more than the people who swear they know what’s wrong with stuff and never put hands on it! I’m glad you have patience and knowledge to educate people. This is the kind of channel I enjoy watching.

[@MWilk098]

The person he was responding to was obviously a machinist themselves.

[@ericeastmead7770]

I'm a millwright/ fabrication tradesmen (non-union), He may be a machinist, but from what I see about his lack of knowledge of thermal expansion, especially between different metals I personally would never send my work to his shop. I have worked on billion dollar equipment In particular a 350' continuous OSB press that grows 9" from cold start to operating temp. so tolerance changes for every part attached. and I do hundreds of pump rebuilds . depending on some exotic materials and temperature of what's being pumped. a lot of research goes into thermal growth. love your work brother

[@matthewwebb6001]

@@ericeastmead7770 The last millwright I met on a job was a pretty cool guy and knew his stuff.. I just can't see someone who should know better acting like you are unless you just don't believe the guy went 20years without a return.

[@ericeastmead7770]

​@matthewwebb6001 I know everyone screws up, I know I have. I'm just saying you have to understand thermal growth when setting tolerance especially when using different metals.

[@MurgatroidGarfunkle]

@@ericeastmead7770 But he said he's never had a head returned to him in 20yrs. Wouldn't this thermal expansion thing you speak of cause issues with every job he's done?

[@tonymonroe4861]

You went above and beyond what you should have.

[@markabner4046]

Watched both videos. You are the rare example of what makes America great ! The business man that stands behind their work and is truthful. Let it go, move on to the next job and keep up the good work my friend. You are a true grassroots american.

[@powellmachineinc3179]

Appreciate that

[@stevewelborn8744]

This probably won't impress you but I just wanted to tell you. I've been a cylinder head man for 40 years and have worked at a very high quality shop. I have subscribed to you because I feel you are very sharp and I love how you handle things.

[@powellmachineinc3179]

Thank you so much!! It's amazing to me how many awesome folks on yt reach out with positive feedback!!

[@eriklarson9137]

I subbed as well. This dude knows his stuff for sure.

[@nataliewassel3187]

Yeah I can't understand how the other combustion Chambers don't show no sign of carbon

[@robertheymann5906]

You come across as an honest dude, it's one of the reasons I enjoy your videos and you seem to be a guy to admit any errors and embrace truth. Thx brother

[@powellmachineinc3179]

I appreciate that

[@narcoti]

To be honest you hear that accent and know automatically dude is a straight shooter.

[@robertheymann5906]

@@narcoti yup

[@flexmasterson4297]

Sure do appreciate a competent man thinking about facts and data. Well done.

[@powellmachineinc3179]

Thank you! I appreciate that

[@raptornest1346]

As aircraft mechanic piston turbine and a few car, boat and bike bulds ... I been around the block a few times. Everything you said is true and on point. People should appreciate you sharing your knowledge as a master engine builder. I would absolutely have no problem shipping all my future builds to a trustworthy technician. Keep the faith my friend.

[@artlife6210]

Ive been building motors all my life ,not at your level by any means, but I consider myself a pretty thorough and successful builder, and every time I watch one of your videos I learn something(or things) new. So many people wrench on a car for a while and then think theyre qualified to claim expert status to the point of correcting an actual expert such as yourself, humility sure needs to make a comeback, love the content, peace and cheers!!

[@Scummy_shovel]

Absolutely. Become a expert at everything is a gradual process and you really never see it in yourself. Because like you stated the more you learn about anything the more you realize there is so much more that you still haven’t learned. Like me. I’m 45 years old. I have been building motorcycles my whole life. I have built more motors than I can remember. But there are still motors and Designs that’s new to me when I see them. Especially new stuff. They make changes constantly. So regardless to what you do for a living you advance in stages 1st. I have no clue. But I’m learning 2nd. Ok. I have the concept and now I’m doing 3rd. Ok now I’m very comfortable and confident I can work or fix most anything 4th. I have seen almost every problem and can pretty much work my way through any sort of issue and problem It’s the 4th stage where none mechanics think you are a expert. But you never see it or feel that way because you know there are some mechanical things you haven’t done or seen. But your confidence is high enough that stuff doesn’t worry you. Then the last stage is you die taking decades of experience with you still not 100% experienced in everything there is to experience in your trade. I’m 45. Grew up in a motorcycle dealership working on bikes everyday. I’m in the 3rd stage because like you I’m reliable. But I still learn constantly. Even if it’s learning a better/easier way of doing something I can already do.

[@charlesauld8494]

Hi, I'm a retired Chief Marine Engineer, in Scotland. I saw your video, and, as far as I am concerned, the valve seat grinds were spot on. The way we used to check a valve grind, was to put 4 pencil lines on the valve face, put the valve in, and give it one quarter turn, then take it out again. If the 4 pencil lines were cut, the valve seat was perfect. You probably know this already, if not, I hope it helps.

[@TheeGlocktopus]

Practical Knowledge is not the same as Working Knowledge just like Engines are not the same as Motors.

[@lamewarrior]

@@charlesauld8494 Thank you! that's just what I need to know for my Wheel Horse exhaust valve lapping job.

[@DL101ca]

They have not been serving humble pie at the local diner for a while...folks have forgotten the taste of it.

[@doncarlson8391]

That dude thinks he knows something but it's obvious he only knows what he's watched on KZbin. You are 100% correct in your assessment of the situation. For what it's worth, I've been in machining and metrology for almost 40 years and fully understand and agree with you. Appreciate your patience and taking the time to make these videos.

[@SophiaAphrodite]

Yes. He had a theory, Googled the terminology and posted his comment. Missing the whole problem which his argument even if TRUE would be irrelevant in a new build early startup

[@jimmyarrington3343]

You can't fix stupid. The guy has no common sense and a huge ego.

[@TheTruePhatso]

I just came across your channel today and I sure am happy I did. I saw the video just before this one about the Mr-know-it-all and the "failed" valve job. Some people are just so ignorant of facts and they don't realize how stupid it makes them look, like the valve job guy. I retired as a precision machinist after more than 35 years for an engineering firm. Most of these people don't understand what it takes to do intricate machining and how tedious the setups are. They THINK they know yet they have no idea. Your videos are very informative and easy to follow and you know a little bit more about how to do some type of machining work that, quite frankly, I didn't know how to do before. Keep your honesty and your integrity and as long as you have those two things, the work will follow you. Stay safe.

[@gungho6798]

As a machinist myself , you are 100% right. Appreciate your honesty and the way you come across on your videos.

[@powellmachineinc3179]

I appreciate that

[@JPsTurf]

45 years turning wrenches here - I found your channel by accident, and subscribed because of how well you explained that valve job. I also admire how you handled the problem customer - you should have folks lining up. I'm not too far from you, so I will be bringing you any engine machining work I need in the future - keep up the good work!

[@larryalexander4833]

Samehere

[@snoodyfox8140]

I did the same thing.. it just popped up .I'm glad it did.i definitely appreciate it.47 years of turning wrenches

[@bencrisp9776]

My daddy always said,, you can't tell people that don't know... Keep up the good work.

[@davidhayden9336]

ENOUGH SAID YOUNG MAN, I'M 77 AND KNOW YOU SPEAK THE TRUTH. KEEP DOING WHAT YOU ARE DOING.

[@powellmachineinc3179]

I really appreciate that

[@justinstrouse1015]

This guy absolutely knows what the hell he's talking about. You just gained a future customer!

[@user-lh1ss1fp5q]

I was a student of auto mechanics beginning in 1973. 4-1/2 years of vocational school training prior to working as a natural gas industry car and truck mechanic for 12 years of a 34 year career that I finished in 2010. I have had updated OEM updated training modules over my 34 year career. I am not NIASE certified but I know enough to see that you are a highly trained industry professional. There is nothing I would try to school you on or dazzle you about. You are an engine mechanical genius. I stand in awe of what you do in your business there.

[@PurposedLensPhotoMedia]

I'm not sure why KZbin recommended me this video however, I am glad it did! I just want to say that you seem to be a man of great ethics and morals! You stand out because it's RARE to find people (especially on KZbin) who are just interested in the truth and teaching others in such a humble way! You seems to be doing well in life and I can see why! I wish you NOTHING but success here on KZbin! Keep up the GREAT WORK! 👍🏾

[@fknbastages]

Same here. It just was there. He is like a few other KZbinrs that I trust. Scotty and The Car Care Nut.

[@danburby7936]

IM 86 YRS OLD,IVE DONE HUNDREDS,IF NOT THOUSANDS OF VALVE JOBS,AND I NEVER HAD A CUSTOMER COMPLAINT,IM SORRY FOR YOU WHEN YOU GET A CUSTOMER WHO KNOWS MORE ABOUT YOUR TRADE THAN YOU DO,YOUR A GREAT TEACHER

[@powellmachineinc3179]

Ty sir!, I really appreciate that!

[@ChrisHall02]

Just found your channel because of that "bad" valve job video, then watched this one regarding the armchair machinist. Even though you didn't have to, you took the time to explain in detail your process and approach to your work, and explain how his assumptions were incorrect. It's obvious you are honest and care about what you do. I have no doubt you're an expert in your field. Great job firing that customer. I worked in the trades for many years and only had to fire a few customers, but sometimes that's what you have to do.

[@powellmachineinc3179]

Thank you sir

[@stanleyeallen]

I watched both videos and you have gone the extra mile to serve the customer and the truth. I have 50 plus years in the business and you make me proud.

[@kenchorney2724]

The customer could have narrowed down the cause of the issue by doing a leakdown test on the motor while it was still assembled. If leakage was noted past the valve, remove the rocker arm and re-test. I suspect the leakage would have disappeared once the rocker arm was removed and that would have shown him what the cause was (stuck lifter).

[@jasonbolton1796]

100% remove the rocker first. Before condemning the valve

[@SosopChabot]

Exactly

[@kenchorney2724]

@@jasonbolton1796 That's what I have done whenever I found a leaky valve during a leakdown test. I usually give the valve stem a rap with a deadblow hammer while the cylinder is under pressure to see if the leak goes away. Sometimes valves will leak a little if a used motor has been sitting a long time without running (not applicable on fresh heads of course).

[@lebojay]

What’s a rocker arm? (JK: European car dude here just messin’ with y’all 😉)

[@lexteakmialoki5544]

This is exactly what should have happened. Video the leakdown test. Remove the rocker and do the test again. Call Powell, explain the results, talk it over. Too not consider all possibilities, yank the head and blame someone else for your lack of knowledge, just proves it. Powell did that, grabbed the head out of the truck and showed the whole story from the start. The customer says the head has a problem, without any actual proof and they blames the guy who just proved it was correct. Funny all those other valves in the heads, cut with the same equipment did not have an issue. Guy should be happy he got the compensation he did.

[@HeinzGuderian_]

The issue was the valve being held open while the engine is running. You were spot on with your theory about the lifter pre-load being too high. I always go light on pre-load and then tighten up as it runs. I've never had a problem doing it this way, and it's how I was taught 45 years ago. Hydraulic lifters have a lot of room for adjustment so someone didn't know what they were doing. That person was the customer.

[@patrickgreen9747]

“Ray Charles could see the leak”……now that shit was both funny and accurate..!!!

[@powellmachineinc3179]

Lol

[@vinceevans3219]

Hi I'm from Salisbury in the UK I worked for Janspeed engineering in the cylinder head shop for over 10 years and everything you have said is spot on and it's obvious that you're customer did not bleed the lifters and the valves weren't closing And even if it was bad job it wouldn't have passed the vacuum test that you do before sending the heads out The problem is the internet has created alot of armchair experts that chat bs and when you call them out on it they become keyboard warriors because facts blow the hell out of their assumptions and hurts their feelings which they take out on you

[@stuartreynolds4480]

also from the UK, where young learner bikers thrash 4-stroke 125's and hammer the valves into the seats for zero valve clearance..

[@vinceevans3219]

@@stuartreynolds4480 it does happen like that lots of revs unleaded fuel Ducati recommends reshimming every 6000 miles

[@dominichamel4685]

Just imagine how much work you could have put out in the time it took to make this video explaining the situation that wasn't a situation, simply educating truth from fiction. Keep up the good work

[@dominichamel4685]

You obviously know your craft well. It's getting harder these days to find quality craftsmanship. Thanks for the like.

[@scottnusser6232]

The guy who sent that email is a real smacker! If a customer questions my integrity they are history! You handled it perfectly. Give them back their money and kick rocks! Back in the 70's and 80's we did a ton of freshen up hoagies for low cost repairs for customers trying to get to work. You can get away with a lot and they'll run just fine for a long time. The guy who emailed never took apart a good runner and actually measured anything. I've ball honed and put rings in cylinders many times with.010 taper, was it optimum? hell no, but worked just fine. Helped alot of poor people get to work over the last 40 yrs. I can see you are a good man and very knowledgeable, don't let some jackass, know it all bother you!❤

[@jonnyskray3000]

There's no doubt this guy understands every last detail of what he does, and the problems that can/do arise. He doesn't come off as arrogant, but confident in his experience and knowledge.

[@powellmachineinc3179]

TYVM

[@user-wv1pj6wh4h]

well customer received a head with a problem, I think, , It should not have happened even if client ask just for a small job in the head.. there are warnings that we need to tell to customer, cause we are master techniciasn and customers dont understand a shit about it, even if the customer is a shop worker, so ....its called a service-- master machinist

[@jonnyskray3000]

@user-wv1pj6wh4h I can understand half of your reply. However, the only warning should be "install correctly or get a professional." At this level, if you are having heads or machinists do this type of skilled work on whatever, and you need a warning or help guide... you shouldn't be installing it yourself.

[@user-wv1pj6wh4h]

@@jonnyskray3000 1- tell the customer if you do just half of the job you cant guarantee it at 100% 2-If customer have a problem you have to tell him what is it.

[@jonnyskray3000]

@@user-wv1pj6wh4h it's not Walmart ffs 😂 - IE universal easy installation. It's a custom rig bro

[@alanschroeder3613]

You were very smart to video tape the whole process from the time you took it out of your truck until the end. There isn't anything else that you could have done to please that customer. Your handling of the situation was very professional and commendable.

[@MurgatroidGarfunkle]

@@wonderors And here you are. Maybe it was scripted, but doubtful. Question is...did ya learn anything? After all, that's why...the video...

[@JimmyRJump]

To me, you come across as a person with great integrity. Absolutely no ego involved, just trying (and succeeding) to convey what you're doing and what's going on in crystal clear clarity. Of course there's pride in your work. But that's not to be confused with ego. Pride comes from a job done to the best of your ability. Ego comes from thinking you're the best out there at what you do. Greetings from Belgium.

[@samrodian919]

Now that is so true!

[@shaggydogg630]

I watched the first video, I didn’t see anything wrong with the work you did. I’ve been in a shop all my life and sometimes these things happen. The customer had other issues that we probably will never know.

[@jeanlawson9133]

I too seen the video,, the cylinder head was correct there had to be something in the rest of the valve train that held valve open. Creating a valve leak be it adjustment or rocker alignment or the rocker stud, shaft, or bearings in rocker..

[@copperaudio9664]

"The customer had other issues that we probably will never know" Indeed

[@deepsleep7822]

Most of you guys are way beyond my skill level. However, my 2 cents. In the first video the more he got to explaining it, something was/is preventing the value from fully seating. Only a few things can do that. My thought was that something is/was wrong with the value lifter. Sadly if the ex customer does figure it out, I doubt that they will contact you.

[@chuckfry1227]

The customer will never admit fault or what they actually did that was wrong. Especially since you paid for their expensive mistake. I will be subbed to your channel till you or I leave this world. Thank You for the great education. 😊

[@johncherish7610]

@@copperaudio9664 I will say it. His other issues is that he is a jerk. He just wanted to blame his mistakes on the machinist, I will bet he didn't check the lifters and had a stuck one. If you going to spend all that money doing a valve job replace the lifters and check the cam for wear as well. It makes no sense to tear down that far and not do it

[@MeLoNHeAd00]

I love it when people critique pros ! The customer was wrong !!!! I do know this as i have been rebuilding and machining engines for 22yrs. That valve was as sealed as a nuns beaver! Also i love your cams !

[@rickeh100]

You sir are a fine grntleman. Very few machinest/mechanics have your calm confidence, proving to me a very competent professional. You sir are an exemplary facilitater of learning. Your son has the best mentor possible full stop! I hope your customers realize how lucky they are. You should be working for the likes of Mr Hendric, Mr Penski or Mr. Andretti! Thank-You for your sharing of knowledge!

[@powellmachineinc3179]

Thanks, that's very kind of you!!!

[@wolfcommander6009]

When the Keyboard Mechanic Types...its always a google warrior....great vid Sir👍🏻

[@powellmachineinc3179]

Thank y'all!! Really appreciate you

[@mcasteel2112]

I had this one guy commenting on a weld I done, Ive been a certified JB Welder for going 36 years now and I just shrug it off.

[@SteveP116]

Always a great video. I really enjoy listening to someone smart speak.

[@powellmachineinc3179]

I appreciate that!

[@johntom5416]

Back in the mid to late 1970's I worked in a shop doing the exact kind of work you are talking about in this video. I have done hundreds of valve jobs, replaced valve seats, and valve guides, on anything and everything you can think of. We had a Winona valve guide and seat machine, that we used to replace guides and seats. So like yourself I am somewhat of an ACTUAL expert on what can happen to create valve sealing problems. I think your analysis of what caused the zero compression is exactly correct. The entire valve had to be off the seat to allow that kind of a leak to occur. A stuck hydraulic lifter, as you said sounds like the likely culprit. I also want to touch on valve stem seals, to help educate the general public about this technology. Valve stem seals up through at least the 1970's were very rudimentary. In fact the factory valve stem seals on the small block Chevy engines was just a rubber O-ring placed in a groove of the valve stem on top of the keepers AFTER the valve was installed. This directed the oil to run over the spring retainer and down the spring. That was the FACTORY valve stem seal. This was the factory solution for, what, over 30 years, with no oil leakage issues, unless the guide or stem got worn excessively.

[@MrRatkilr]

Basic umbrella seals work. Allow a little oil for lube and sheds most. Positive valve stem seals. Don't allow much oil for lube imo.

[@jakesteel3641]

You're so calm, handling people with facts and integrity, explaining in more detail than their brains could comprehend with it then having your experience, and paying off the wrong customer with it just telling them you are right and screw off.... Just amazes me.. I found this by happen stance and completely respect you and your business.. Some people just want to blind blame those succeeding in life. The fact you stated you have nothing to prove to them is the pure facts, though they think you owe them (the non customer) a second of your time and effort. 🎉

[@DeltaH-9]

I dont know why KZbin recommended your channel to me, but I'm glad it did. I just subbed. You're very straightforward, honest, and no BS.

[@edwardprasad5942]

Sir you are a decent and caring manager/owner. You have excellent customer satisfaction skills. The odd customer can get under your skin big time. Trust me I would come to you for my work in a heart beat. Sleep well my virtual friend

[@55chevytruck]

There are always people like that and that is why I am glad to be retired and not have to deal with the public. Have found the biggest critics rarely do there own work. You doing great work .

[@MarineGrunt]

You want to be a learning channel ? Well , you succeeded , I learn something , every time I tune in . What you left out is that some folks dont want to be taught ...they want to be right .

[@powellmachineinc3179]

Thank you!! We really appreciate you

[@c5back9]

Far be it from me to offer unsolicited advice brother, but I would like to commend your sense of transparency, honor and integrity. It’s seems to me like you have given the former customer and various other naysayers on this thread more time and attention than any rightfully deserve.

[@powellmachineinc3179]

I appreciate that

[@derekzimmerman988]

You just don't find honest quality machine shop guys like this anymore. I wish you were close to me so I could use your services. I would trust anything you told me if I had a engine or head in your shop getting worked on. And by the way, anyone who has a slightly mechanical mind would have completely understood EVERYTHING you explained in your video. Keep up the good work.

[@powellmachineinc3179]

Wow, thanks! I really appreciate the support!!

[@HarborSite-7]

It's a guarantee Daniel, every time I watch one of your videos I learn something new about engine building. You can tell by listening to you speak about these things that you have an encyclopedic knowledge of this subject matter and a certain enthusiasm for it as well. I guess there will inevitably be some trolls in the comments section but they will always be heavily outnumbered by people who appreciate your willingness to share your wealth of knowledge with the rest of us. So again, thanks for your time and patience brother.

[@FarmerJohn1957]

Not sure why KZbin recommended your channel, but I have found it very interesting so far. I’m glad you walked over to show us the machine that actually cuts the valve seat because when you were describing it, I kept thinking to myself… Why the heck would there be a pallet involved in the process… But when you walked over there and showed us the machine It was obvious that you were saying pilot… Love the accent. Keep up the good work.

[@donbartholomew8273]

You always want a sober pallet when you take yous fambly on a aeroplane trip 😅

[@rattkiller01]

What accent?

[@tomasmontalvo2857]

I'm an old disabled vet and when it comes to mechanical issues, I can barely distinguish a battery from a tire. It was such a learning experience watching your video. I loved reading the comments from other real experts agreeing with your approach, knowledge and final results.

[@e.l.norton]

I'm not even a mechanic. I just like learning, and you are an excellent teacher if you can make a know-nothing like me understand.

[@powellmachineinc3179]

Lol, never talk down about yourself, !! It's not productive 😕, you are very capable of learning, I have no doubt

[@e.l.norton]

@@powellmachineinc3179 Oh, I've studied tons of different things. I've just no real mechanical training or education beyond basic DIY maintenance. I was impressed by how accessible your style makes the information and how it was so easy to follow and understand. The man who knows what he's talking about need only explain something once. You clearly know whereof of you speak. If your goal for the channel is educational, mission accomplished, man. 👍👍

[@jonfrost7996]

Pure class man pure class. You got me as a new subscriber I admire your patience with them. I've been fixing busted stuff for 37 years now. I still learn every day, keep teaching. People's self importance fills up their head so much there's no room for learning. You ROCK.

[@gorilla_with_jetpack4102]

Man, I have no idea what's going on here but I feel like I'm learning something. I barely understand how an engine works, but I am enthralled with the information you're providing. If I ever need an engine fixed, I'm going to your shop. Rock on dude!

[@forresta65]

You are always worth listening to. Thank you for passing on your knowledge/ experience.

[@powellmachineinc3179]

I appreciate that!

[@dantwomey]

You remind me of Steve Morris of SME. You're honest and you're making a great effort to help people get things done correctly. One of Steve's favorite sayings that always makes me smile is, "That's just not how it works!"

[@flinch622]

I appreciate your focus. In a way, this channel could be said to be about building a better customer - the internet has its share of half baked and wrong information that needs just a little help.

[@dustinloudermilk4349]

You proved your case when you lapped the value by hand for 30 seconds and it was perfectly in round great job buddy your shop did everything rite....

[@powellmachineinc3179]

Thanks 👍

[@johnmahlstedt6715]

Thank you so much for explaining this so well. I especially like that you had the original video and then took the time to explain why the other comments didn't make sense. It shows that are passionate and extremely knowledgeable about what you do and we appreciate the level of detail and method of explanation. Wish you continued success.

[@powellmachineinc3179]

Glad it was helpful!

[@jenniferwhitewolf3784]

I admire your devotion to seeking greater knowledge. I really hope there are some young people getting started that are subscribed, and taking in what you say as part of their education, not just the procedures, but the ethics also.

[@brad4908]

27:11 ‘… people that’s smarter than me…’ as a foreign viewer, who knows *nothing* about machining or mechanics, can I just say how much pleasure it gave me to listen to you discuss this with your accent. To a non-American you have a real ‘good ‘ol boy’ way of speaking that adds huge value to your out-of-hand dismissal of his criticism. Fantastic.

[@powellmachineinc3179]

Tyvm

[@walkerrobinson9614]

All im gonna say is this, in this day and age, people dont seem to know what a woman is, nevermind the intricate details of machining. I love your videos, keep doing what you're doing brother. Ignore the naysayers.

[@Cad1900]

This is a wonderful learning experience for those that might listen. I’m not a machinist but have been a hot rodder forever. You’ve explained things that I have always wondered about. Thank you. 🙏

[@joelpierce3940]

I have done just a few valve jobs in my life, but I seem to remember that the arbor that goes into the guide which then holds and centers the seat cutter will make it almost impossible for the center of the guide in relation to the circumference of the seat to be off. Just my opinion.

[@powellmachineinc3179]

Yep, facts

[@squarefour1]

I am new to this channel. I have watched these two episodes about this particular valve job. This machine shop is LEGIT The amount of time spent on the heads the first time in this shop did not produce $100 profit (just a guess) !!!!!! With 3 or 4 machines involved to do the valve job. Man hour labor cost, machine cost, consumables cost, operating cost , Now we have an explanation of how the heads were machined , which I must say is a huge loss of valuable time for this machine shop! Great video on a set of heads that were Machined Correctly the first time by your son. To bad your customer and his friend wont come over and help put their mistake to bed. Good discussion makes for Great Decisions. You have certainly done your part

[@powellmachineinc3179]

Ty

[@mikefrench616]

Sir your reputation is intact. Keep up your high quality work. Ignore the nay sayers and motor on. You did all you could, more than most would. No regrets.

[@nosefirst]

One of my favorite things to do as a young engineer was to go out to the machine shop and watch older operators work and ask questions.

[@enraikow6109]

i have near to no experience with valve-work, but i appreciate your professionalism and respectful attitude coupled with the most southern accent i've ever heard as a foreigner. i enjoyed every second of this and even learned a little bit too. thanks for all that. god bless!

[@RB-lf7bo]

Thank u for all your patience in teaching keep on keeping on 👍

[@powellmachineinc3179]

You are very welcome

[@rafaelbustos4758]

Harley cranks❤ wow I live close windeberg ranks😊

[@louietuna8091]

Great response Mr Powell. Your humility is amazing, but it is your integrity that really shines. I asked a competition engine builder once, 'So, I guess you probably build them with tighter tolerances than a stock engine, correct?' He said 'No. We need them to spin more freely.' Some things are just counter intuitive to 'internet experts' like me and your critic.

[@jamesbreve8761]

As I sit here to grasp a taste of what and how you prech lol I see a man with a good attitude you knows how to break down and teach and and a man that's takes his job serious congrats

[@powellmachineinc3179]

Thank you!!, I really appreciate that!

[@johnnystanley4469]

Love the channel prop to you promoting Jams channel you are 100% correct on on your explanation

[@stephenhilyer]

I love this. Some people you just can’t make happy. I own my own business, no where near the precision as yours, I fill for you guys. Thank you for what you do.

[@owensbama1923]

I am an Aircraft Mechanic of 25 years. The reason i say that is brcause i do know a little about this stuff. Im not an office worker or mamas basement keyboard warrior. I could tell from the first video the guy that sent the head back had a valvetrain issue of some kind. Could have been several things. I believe you showed that very easily. I have seen valves with nearly 1/8th inch play in an automotive application still seat and not leak. He clearly had some blowby but something held that valve open and had zero to do with the valve job your guy did. Period. I appreciate your channel and the informative nature of it. Great job.

[@powellmachineinc3179]

Tyvm!!

[@motorcopT2]

This guy is sincere and truthful. I don’t understand why this is still an issue with some of the KZbin University graduates who clearly think they know his job better than he does. 😂😂😂😂

[@powellmachineinc3179]

💯

[@johnallright6847]

This guy comes over as a man who knows his stuff and hasnt tried to rip anyone, he has integrity in abundance and you can just tell he is not a billybullshitter, think the customer just doesnt know a hundredth of what he knows like me and that is the problem.

[@gordocarbo]

He cranked down the rocker too far and hung a valve open. He obviously knows nada just points and faults. Those guys...never wrong their dog dont bite, wife dont cheat etc Just ask em.

[@arcorob]

I dont do engine stuff anymore but subscribed because we need good channels like yours ...Totally supportive

[@simplicity6564]

Way beyond your knowledge of your profession, your approach to what your mission of your channel is a lesson for all of life. Our country and "leaders" would greatly benefit from that approach. Thanks!

[@powellmachineinc3179]

I appreciate that!

[@biastv1234]

Just discovered this channel. I’m an Australian, so your accent is a little tricky sometimes, but when you said’ Ray Charles could see that ‘ I spat my coffee all over the keyboard. Excellent channel, great content. Keep up the great work

[@powellmachineinc3179]

Thanks for the sub!

[@deemstyle]

Man this video earned my subscription. This guy’s level of understanding and skill is something I want in my life! Great response to the emailer!

[@jessehunt9188]

Yes sir, it makes so much sense! Thank you for the info!

[@delcottp]

You have extreme restraint…I respect you and your business…only watched one of your videos…I subbed for life…

[@yuno3364]

I learn so much stuff watching your videos! Keep it up

[@powellmachineinc3179]

TYVM

[@robertborgeson1821]

Just found this channel and love it. I have always been into mechanics. I am in the process of trying to build my LS1 camaro. Most of my knowledge is book and/or internet learned. I like to think I'm pretty versed in engineering theory and how things work, although I'll be the first to admit I'm not the best with a wrench... All this is to say this channel is perfect for me because it balances what I think I know with real world application. Thanks for all the insight

[@bw5559]

This kerfuffle has presented an excellent learning opportunity for some of us… Glad I discovered your channel!

[@powellmachineinc3179]

Welcome aboard!

[@jrbird7571]

I appreciate your ethics and honesty. It is quite refreshing to me; I'm a customer of a shop that stroked my LS1 only to have some ring issues and oil blowing out of the exhaust valves. I was ghosted by the shop. I paid over 12k and just kept feeding a quart of oil every few weeks. I do most everything on my car because I don't trust any shops AT ALL. I would gladly give you my business. Subscribed!!

[@jrbird7571]

Also ... either that customer was totally scamming or he clearly had some geometry issues; hard to imagine that one pushrod or rocker arm would be longer than the others ... but something ain't right.

[@powellmachineinc3179]

I appreciate that!

[@johnandersen6364]

Your patience and professionalism are bar none. Most of us have had customers like this and yes, the best thing was to fire them as customers, your time and expertise is best used on customers that deserve the work you do. Great channel, wish I knew about this channel sooner! You are a straight talker, and know what you are talking about.

[@halbud]

New subscriber, Great Explaination on the valve repair . Just retired from being a truck mechanic for 46 yrs. If i needed head repairs done i would send them all to you ! Your an honest man,and i like the way you talk ,lol!!

[@jetjock6045]

you do a great job in taking the time to help the people who don't know much engines.

[@terrythompson1660]

We need me honest people like you in business, bod bless

[@powellmachineinc3179]

Ty, I really appreciate you

[@TheHandyHam73]

Many years ago, as a young Man, I worked as a Mechanic on German cars and anybody that knows the old air cooled VW's Primary mode of engine failure was the Cylinder #3 exhaust valve head breaks off due to metal fatigue. Just before that valve breaks off a large amount of side to side is present yet the engine runs very well right up to the valve head separating and going through the #3 piston and making spaghetti of the bottom end. You are an excellent mechanic and are correct in your analysis.

[@gantz4u]

I lost compression on cylinder #3 exhaust valve on a subaru boxer engine. I ripped it down and the valve was bent and stuck open. Hand lapped new valves and did the light test then the liquid test and changed the rings while I was in there. I always wondered what would suddenly cause 1 valve to bend. Its an interference engine But 1 valve and I checked the timing before tear down and it looked fine. Just lost compression on cylinder 3 one day and started running rough while driving.

[@TheHandyHam73]

Metal fatigue is a common mode of failure for valves. the stem can stretch, bend or even break the head off.@@gantz4u

[@Steves-Bikes]

I agree with everything you said in this vid. I'm in my 60's and been doing motors since I was 15. When the hydraulic lifters came into use every time I built an engine I would collapse the lifters before fitting them, I've seen guys build motors and them have no compression because the new lifters were holding the oil. Keep up the good work Sir.

[@BB-rn6so]

I've had lifters do the exact same thing Steve. Most likely the problem the engine builder/ changer had with this cylinder head. It wasn't the vale job. I'm sure these guys vacuum each cylinder head before it leaves the bench.

[@budlanctot3060]

I already commented previously about that. Some guys think they need to submerge the lifters in oil and pump them up before installation. I've argued against that for years, because sometimes the lifters have a tough time bleeding back down and will hold the valve open on initial start-up. I found that out, myself, like 50yrs ago.

[@apetri7221]

Very nice...there is more than one way to have a discussion...or a debate...every one learns each and every day! Merry Christmas to you and those around you!

[@jeremyhall7495]

Great channel, really honest information, well presented ! Thanks, I learn something every time 👍!

[@FloridafishingwithRick]

Don't even acknowledge them man. Itll always happen no matter what you show or do.

[@rchydrozz751]

I agree. Once a few of these knuckleheads see they can irritate you, they will continue to try.

[@Tooooooon]

Just started following this channel as only like to follow knowledgeable people who are experts in their field.Totally agree with your reply to this keyboard warrior. Always good to listen to a straight talking and honest guy who can explain things easily and simply! Great work 👍

[@zackclark2214]

Keep doing what you’re doing! You’re doing an amazing job. I love your passion for what you’re doing. It’s rare to find these days…