DYNO DISASTER... No Injuries... Easy Fix, But This Camshaft Was A HUGE PROBLEM ... Steve Morris

[@billkoz5464]

Is the black clamp on the left side intake tube lose?

[@stevemorrisracing]

No, the dual seal clamps are made to be loose and seal on the o rings.

[@freedomfox8183]

Supposed to have movement... I love those things

[@roknroy1]

@@billkoz5464 saw that too

[@GeraldedwardKaiser]

​@stevemorrisracing have you ever used holley Terminator injectors? Are they any good?

[@overyonderjustapiece]

@@GeraldedwardKaiserBosch high impedance are WAY cheaper than ANYTHING Holley offers for sale. Look up Carter Motorsports for their injectors. They are flow matched and include the data sheets.

[@LilJayV10]

Coming from working in a performance shop that is focused on quality. I appreciate your level of detail. Everyone wants this level of work, very few actually understand what it takes and even fewer want to pay for it.

[@davidhawthorne9637]

Same here customer sees 5 hours for a valve job and compares it to the last shop only charging 1 hour for a valve job. They ask why you took 4 more hours than the last guy for the same job. Because it took 3 hours to "undo" what they did and 2 hours to do it the right way. I'm a hotrod/muscle car wiring guy I can't even begin to tell you about some of the "professional" wiring jobs i've fixed. They usually start with stripping all wiring and starting over its simpler that way.

[@fatasdat]

It happens in the car industry. People forget that cheap isn't good, and good isn't cheap!! You get what you pay for!

[@dannymccraw4841]

I’ve paid for it and got crap work , what people want it to do good work, but it’s hard to get good work, Steve and a very few do exceptional work . I’d just like to see pride in peoples work come back.

[@parker1ray]

Many can not afford this level of work! I come from a long line of street tuners in the 70's and 80's that tuned thru trial and error! I would have loved to have had the money at a young age to have been able to take advantage of people like Steve, but due to lack of funds, had to rely on hundreds of hours of porting and wrenching to get to the same end! That is what made it fun! Many rich people will never get to experience that level of enjoyment LOL!

[@spambeanie2]

except they didnt test the heads first and I think it's the whole issue and he just wanted his cam and the comparison is invalid

[@bobmeyer7009]

Excellent video! No BS, no hype, lots of facts and diagnosis. Great job!

[@ChrisMcCutcheon-wj2pp]

Gotta love honesty, it doesn't cost a penny, thanks Steve and all, stay safe

[@freedomfox8183]

It definitely can cost you customers but the kind of customers it will cost you is the biggest benefit in the world... You don't want the kind of customers that don't understand how these things work infact if possible you want to keep them as far as you can from your engine business.. those are the kind of customers that you can never make happy and will never be pleased and blame you for everything no matter what they do.. the day I can afford to upgrade it I'm having Steve build me my dream LS.. I've never had an engine builder I can trust the way I trust his honesty and transparency...

[@marshallspangler5741]

First things first, I was watching this on my TV and I just had to grab my phone to write this comment. I just wanna tell you, Steve that it is so great to watch you and Kyle work together and seeing that Kyle started his own channel and trying to inspire other people it has made me noticed when he is on your channel now as own person the way you teach him for some reason in this episode Seems to be a lot more understanding. Reason I say that is because when you explain it like a motorhead like you and Kyle are you explain it like a mathematician but when you explain it to Kyle, you break it down a little bit slower a little bit simpler for us guys that you know have a hard time hearing in the back of the class. I just wanna let y’all know. I love watching these videos for the in-depth intelligent conversations about motors.

[@krusher74]

I bet that valve job cost far more that the customer "saved" wherever he bought them.

[@robertdinicola9225]

Awesome job guys! I used to do this stuff on motorcycles in the 80s. No telling what "the orher shop did"!😂

[@Drobert882-ix3zf]

Much respect to the youngster showing what and why on that valve job ,, it's good to see the next gen taking pride in quality

[@richwood8650]

Same dip the big black hemi was showing?

[@davidtappe5337]

I knew I had seen that graph before. And because I’m a fan I thought valve train right off.

[@natejames5720]

I have learned more from Steve,and Kyle than school taught me lol. Killer work as always gentleman

[@Shademax4273]

That was cool seeing the wastegates open when the driveshaft collar stripped out. Wonder how much boost it built. Lots of pretty sparkles too lol.

[@roknroy1]

Awesome video! I wasted my life not pursuing what I loved. This is the stuff I wish I would have learned and made my living

[@vadimm6432]

Never too late!

[@Thomamps]

Seeing the dips in the curve and the controller ramp to compensate, I would say there is a feed issue into the gate, either priority or the tube from main to gate has a harmonic. I'm really looking forward to the intake change as I don't like long runners with a small plenum on engines like this.

[@mikesalm5053]

Man, I miss running an old kwik way valve grinder. Cylinder head work was one of my favorite things to do when I worked in an old school machine shop

[@jeremypietrzak7036]

Grinding cranks fluxing hardening and finishing was mine. Did a lot of stuff for Borowski Race Engines. Was super cool doing way high up there HP and high end cost work. The dude I shadowed was amazing. Just didn’t have great English lol dude still taught me how to be a half a thou on just about any size journals we had stones for. It’s a process. I ran a really old Berco machine back then. Finishing and polishing was actually enjoyable too. I took a lot of pride in everything but really went over the top for the race guys that used us.

[@peteward8125]

Steve . Thank you again for sharing so much info with us ! Between you and Kyle I have learned a great deal ! One day I hope to meet you guys in person . Thanks again.

[@nickspencer9581]

I'm glad that you didn't call out whomever made or what company provided that camshaft. No reason to bash others orver something so little. Thanks Steve for being an outstanding person.

[@StewMac570]

You can see Steve thinking “ I know how to fix this, it’s going to cost me more time, but it has to be done” 8:17

[@bretbauer7582]

Shoulda quoted that in the beginning using a customers parts

[@fisshuman]

This is how the world should be but unfortunately, not all people thinking like Steve. They all scared of loss. Always wanted a profit out off everything. "If I make this right, It's gonna cost me more effort and the customer wont pay. Let's just leave it as it is. It's good enough." Customer will not going back to you. Steve in the other hand think that if he do a good job helping his customer even though he doesn't get anything for that extra effort. The customer will be satisfied and then come back again in the future. Truly a smart and kind guy. Edit: I'm sorry, I'll change my word little bit. Steve gets the knowledge of solving the problem which not many people knows including him and it'll help him in the future. Also gets content for which I love to watch.

[@MrCheckster2000]

Love the technical design details you guys go into.

[@frankensteincreations4740]

Sounds like a Hughes Engines camshaft lol They love tight LSA on everything they sell. Regardless of what it should be… Love how you guys don’t quit until it’s right! 👍🏻✊🏻👏🏻

[@tomcoon9038]

Love how you guys don’t quit until it’s right! 👍

[@oldcoot3459]

Shit...I've got one of their hydraulic rollers in my 360. I was second guessing myself when I bought it and you are not helping 🤣

[@frankensteincreations4740]

@ lol. All depends on the application and your needs. Tight LSA will help cylinder filling at low rpm, it’ll help if you have lower static compression. It’ll build torque lower and mid range rpm. It will however narrow your power band. They have their usefulness…

[@3rweldingandfabrication375]

@@oldcoot3459go look at cattledoggarrage tighter Lisa isn’t always a bad thing

[@krusher74]

Vizard seems to love that spec too.

[@lordcommander3224]

Pete did a thing on sloppy valve jobs as well. It seems to be an epidemic in the performance world.

[@grandmasmalibu]

With what they charge for those things these days you would think you'd get good quality control. But sometimes you don't. I guarantee those seats and those valves never touch each other until final assembly before boxing and shipping them out to the customer. One that far off I could have caught just by flipping the head and pouring some alcohol in the chambers (which I do, bare minimum, with all "new" heads right in my little home-gamer garage). Anything close to suspicious I have my local machine shop re-do them like SME did here- just a little "kiss cut" on both to get them acquainted with each other.

[@torxxx1]

wait, you mean 20 seconds isnt enough time for a valve job? Here, I ground and lapped the valves using Brand A valve... Now here is Brand X valve, install it and run it

[@chief3378]

I saw that on Pete's channel also

[@jackclay4345]

Yeah seen on petes and also steve had a set of dart heads a while back i think it was on one of videos had to cut seat again! Bulk manufactoring rush jobs to get them done!

[@bretbauer7582]

Buddy it's been a thing for decades now

[@andrewadams1428]

Nice to see a young man actually hand lapping valves like I was taught

[@MrTheHillfolk]

Yup ,none of this spin it in a drill crap ..ive commented this like 4 times already 😂

[@wobblysauce]

It doesn't take long and you can feel the difference when it is done.

[@Loz__]

It always amazes me that with all the high-tech gear you guys have got, valve lapping still done with a stick and sucker, you can't beat some of the old methods.

[@kurtismaximus8068]

Best video in recent times, love the channel. gotta keep it technical. Love the family aspect, keep rockin!

[@johnweaver8242]

Great video and i appreciate that you told us your going to test your intake before you even know the difference better or worse you will share it with us thank you

[@turbostyler]

I'll put down whatever money you want on the billet inlet manifold making more outright hp, but at the expense of midrange and low end power. I swapped a long runner inlet manifold for a short runner type and that's exactly what happened to me in my boosted application. Wasn't worth the loss of midrange for me to keep the newer intake manifold so went back to the old one.

[@edsmachine93]

Nice work Steve and Kyle. 🏁

[@leonardzielewski2744]

you show it all . i appreciate that. im sure everyone goes through but you have the guts to show it all

[@stevemorrisracing]

Thanks

[@brentdavis4867]

Steve and Kyle make me smile , growing up in shops and pops being the big deal MoPaR tuner 60-70's . The one thing that turned me off of a career in automotive was most shop guys attitudes. Pops was pretty humble and did not mind learning or trying , many of the shops we would go to I saw gruff, jealousy , anger , disbelieve , etc. I can see there is no BS in Steve's shop, I would have worked there

[@royduenas1192]

I always look forward to seeing the next video from you guys. The amount of knowledge shown is on another level. You guys rock, Steve and Kyle!💯👍🏼🇬🇺

[@TJOEMotorsports]

Thanks for sharing and working on Gen 3 Hemis !!!! Love to see more content from those engines. ✅🏁💯

[@therainman72]

This is probably the best video you have produced to date,content, arrangement and editing 🔥👌

[@OliviaMartinez-l3c]

This is really awesome! Humility and pride, what a mix!

[@grandmasmalibu]

"Customer-supplied parts." Oh, shit, everybody RUN!

[@krusher74]

Danny been keyboard racing searching all the best bits from the tinterwebs and they don't wanna party together. now its gonna cost him!

[@THATENGINERD]

Curious what the specs are for the customer supplied camshaft. I have seen the same dip in my engine simulations. Looks like it’s just not happy with that setup at that rpm with how the engine pulses/waves/scavenges/etc. Which I’m sure SME saw that instantly. For the ones asking about the valve job, if it was that it would be down across the board. Eventually, it would lose power over time. Steve, I’m the one that emailed you about the FEA for Mullets main cap. I’ll sign an NDA if I can get more specs on this so I can model it and replicate the power through simulation.

[@otisbailey5455]

Thanks, my analysis agreed with yours tonight. Will also share usually forget.

[@alistairhennessey886]

Inefficient burn/flame front/quench requiring two spark plugs?

[@andreaudio]

You could have retested the dual spark plugs deal with the new cam. Great video as always. Love it.

[@justpauls]

I’m enjoying the new music. Thanks 🙏

[@tomcoon9038]

Steve has had that sweet Jazz riff for a month or two. I love it! I've been meaning to comment on that to Steve.

[@Berm_Blaster]

This is the ONLY channel where you can learn from the videos but also learn a ton of good stuff in the comments. So cool to see all these educated people in the comments and I'm not being a smartass either. Lol

[@jbm3458]

Good video i like the music in the background i would listen to that going to work

[@vehdynam]

Great video that promotes thinking. Many thanks.

[@phillipball-reed8071]

Gen3 hemi making good power! Pretty underrated engine! Nice work fellas

[@gizmokat90]

Very interesting .... I'm learning .....

[@beeeennnnnnn]

glad everyone is ok! that isolated dyno is legit!

[@FangOfTruth]

Just wondering if there’s reversion or turbulence happening. Especially at the waste gate intersection or back housing flange/turbine wheel. At that specific rpm range. Would be nice to see the turbine speed to see if it was stalling out. Speed or air flow.Thinking outside the box.

[@charlesoliver514]

Every video is a class in engine building. Love the content.

[@jd440]

Go back to the dual plugs and run a few tests. I bet those dual coils are fine. Maybe tighten up the plug gap a touch and Then play with timing. Curious to see the results.

[@hotrodcuda1]

Could you show how you determine and set the lash with those Johnson’s Short travels? We are re building our Drag Pak 6.1 Hemi and installing a set of those under our T&D rockers.

[@cameronbishop117]

Johnson has the info on their website I believe. It’s real narrow window

[@dennisjensen7938]

Awesome job guys

[@MattyDaddy14]

Great vid!! Lotsa details! But oh man would I have been pissed if I spent tons of $$ on those heads only to find out the valves weren’t even done 100% correctly!!! Wow!!! 🎉 kinda shows why it’s sometimes better just going with the engine builders’ parts rather than piece meal the only project. 🎉

[@SModelMafia]

Glad someone is doing Gen 3 Hemis. Would love to know where the parts came from.

[@edog7059]

The manifold comparison will be interesting. I was wondering if that small radius duct mounted on top of this tall manifold was doing something strange to the airflow - like pushing most of the fuel charge to the rearmost cylinders.

[@joshkelly3743]

It has individual fuel injectors. Your idea would only be possible with a carb or throttle body injection

[@gordonburnett9672]

​@@joshkelly3743 still could have some airflow issues, Rob Dahm, was looking into his 12rotor manifold, it has weird fluid dynamics, might be different under boost, and with something blocking it, but free flow it wasn't great.

[@joshkelly3743]

@@gordonburnett9672 I watched the dahm video . The air flow may lean out the the cylinders in the back..that is possible. But the fuel is injected into the individual cylinder's right at the head .. directly at the valve.. OP's comment while valid. Would be the exact opposite because fuel is injected directly into the runner at the valve.. The air would favor the rear cylinders. Thus leaning out the rears and flooding the fronts. Think more ! dahm's video made me think more . Egt sensors are so underrated. But are the future

[@edog7059]

Thanks everyone. The points made about individual fuel injectors makes sense. Also, like others have commented, the airflow could still be problematic!

[@asaine]

Great job Kyle!

[@davestuart6593]

Thx will share

[@gtnoslp]

So, what helped the hemi ramp up throughout the rpm range? Changing the "strange" cam or better valve sealing after the valve job?

[@dennisford2000]

Usta hammer the valve seals ,18:17 , then I got stronger and heavier weight training and just pressed it down by hand. It has a feel to it, like lots of other things.

[@Map71Vette]

I actually wonder how it would have done on stock coils. Most people agree that aftermarket Gen 3 Hemi coils are generally kind of junk and that stock ones are really nice. You figure the hellcat stuff runs them without much issue at pretty high power levels.

[@Danbuilt426]

Have made 2k whp+ on oem hellcat coils. Never an issue. Blower, nitrous, turbos. Never even had one fail.

[@tomcoon9038]

@@Danbuilt426 But, but, but, doesn't that "speed shop" label automatically mean that it's going to be faster? 😳

[@danmyers9372]

@@tomcoon9038 - These days it’s hard to know if a part was really made by the label mfg or if it’s actually a junk Chinese copy.

[@ChrisCookAuto]

Same for the Ls. Just about every aftermarket coil is junk

[@Berm_Blaster]

​@@tomcoon9038"speed shop" sticker automatically adds 100hp

[@thomasczyz1279]

Another educational video 👍🇺🇸😎

[@89ddx]

This is a very common issue in a diesel when you get into higher boost numbers and bigger cams with more overlap, referencing the tighter lobe separation angle. If your turbine drive pressure is higher than your intake boost pressure, then your cylinder scavenge would actually flow in the wrong direction on valve overlap. It can flow from the exhaust to the intake. Going to a wider lobe separation angle can reduce overlap and diminish the harmful effect of that. Perhaps the cam that was supplied was running into that problem when the intake boost pressure was limited to such a low number. It might have worked if it was allowed to make more boost at that rpm. However, it could compound that problem by causing more drive pressure as well.

[@davidtappe5337]

That makes sense.

[@darrinjames2876]

Makes sense, just like the overlap on a ported rotary engine the intake and exhaust overlaps the bigger the ports which in this case are cams.

[@stephenlea5765]

Great video. Did you ever go back to the dual plug coil packs after getting it sorted out?

[@nhra7110]

Sweet Gen 3 Hemi!! Can't wait til Thursday...

[@truegret7778]

Oops. I don't recall whether you mentioned the differences in flat-plane crankshafts vs cross-plane cranks in the context of the Big Black Mamba Hemi ..... but, at some point in your copious spare time would you mind mentioning the advantages | disadvantages .... pretty please (or drop a link in the comments if you have). BTW - I can't wait for your response video to Ben Strader of EFI-University !!

[@bigboreracing356]

Flat plane crank shafts are a waste of money in big blocks unless you are trying to turn 9500 to 10,500 rpm in a very light weight road racing application.

[@sneezinhatch]

I watched that he didn't really say anything about power differences just that could need some timing adjustments

[@BiigCheeze]

I remember long time ago, Smokey Yunick spoke about flat cranks in stock block Indy racing. Couple of things he said, longer strokes he favored up-down-up-down flat cranks, shorter strokes the more conventional up-down-down-up flat cranks works well

[@CoopaCoop]

This why whatever you budget for tuning, septuple it! Almost always going to run into issues/hurtles 🍺

[@roguewarr4662]

Nice to see all the high tech stuff ,but nice to see hand lapping valves in .Some machinist say ,not necessary .But I think most mechanics like to double check . To Bad you have to tear down the HEMI because someone didn't double check there work .

[@nickwilliams513]

If you used a supercharger and turbos, could you adapt some sort of centrifugal clutch to disengage the the supercharger at higher rpm to let the turbos work?

[@aussie1926]

With the location of the pressure on the turbo for the bottom of the gate being at the start of the scroll on compressor housing be an issue? As turbo doing its thing not being a proper pressure reading and changing as turbo speed changes? Causing the top of the gate pressure to vary?

[@Smokey72013]

Very cool combo here. Im curious to see the intake swap and how it changes cylinder distribution. Also a bunk set of injectors sure make it difficult to keep a combo alive. I torched a few heads becore i invested in better injectors.

[@Wicked-g7q]

19:10 good stuff young man,

[@Shademax4273]

That is a nice power curve.👍 Fic=Fuel injector clinic? If so looking forward to the testing.

[@MrChargoholic]

26:11 left pressurepipe clamp to intake rotates and must be loose

[@stevemorrisracing]

No That type clamp does not tighten like you think It is a dual seal clamp

[@alanhauser117]

Keep up the great content Team Steve!

[@stevemarr9295]

Fascinating insight as always and great to see how you both work together. Going back to the initial issues - how much of the power drop-off do you think was due to the poor leakdown / exhaust valve sealing (rather than just the cam)?

[@Rrottweiler]

Love to see Gen 3 Hemi videos.

[@joshrawlings2621]

Next level...! Father & Son team...! Edit, You could hear the difference in the lapping. A motor rebuild based on ill fitting/prepared items being supplied. Lessons learnt there.... BYO... Build Your Own..🤨 As like you do..🤗

[@metalcraft_marine]

Pretty awesome to see the engine mods being done while it was on the Dyno stand!

[@davidtappe5337]

I’ll be back Thursday. Good job with the heads .

[@Fk8td]

I’m curious do you run a wider contact on the 45 on the exhaust seat. I’ve always been taught that if the contact is too narrow on the exhaust it won’t remove as much heat out of the exhaust valve and create ex valve issues.

[@paullutherborrow637]

That first part of you machining the first valve it looked like the machine Finnish was out of round With the boost is it the turbos are just so big they are doing ok with your boost manipulation but right where it jumps back up in the higher rpm the turbos maybe coming into their sweet spot and just flowing/working better

[@douglaswinningham7871]

Great video as always

[@Alfonso-mh1np]

Were the guides really worn out what material are the valve guides

[@chimpfoos65]

What the dip still been in there with the old cam at the valves were sealed up

[@orangerider2827]

Yes it would make no difference. The cam is incorrect for what they want to do.

[@freyja4954]

For those that don't understand pid tuning hear are the basics P= perportonal = how aggressive it should act I= intragal gain . = numerical add or subtracted over time to help get close to target. D=derivative = the brake helps you from overshoot your target. When I'm programming one, my first goal is to get my reading to swing back-and-forth past my target. second off is I get the derivative down. This allows me to put the brake to reduce the swing as much as possible. So it's close to an even line, then I add integral in order to Use time based, so I hit my target. Takes a tone of work.

[@chrisloveridge627]

How much boost wil the stock hemi block take

[@michaelkennedy2528]

When an engine with aluminum rods requires many pulls to figure out the issues, how much does that go against (if any) the run tally that the aluminum rods are good for?

[@ericbaker3256]

That's what I was thinkin

[@sneezinhatch]

Yeah usually every 20 runs even a partial pull is a run but this is from a pro line hemi standard

[@absolut7769]

Really depends on power level. Below 2000hp you should be able to go for a very long time. As you creep up in 3k and 4k then its something to consider but even still the SMX has proved you can go thousands of miles and a hundred passes and still run strong.

[@jkfonyi]

Aluminum rods is a lower hp engine don’t really have limits on runs .

[@Berm_Blaster]

Also dyno pulls aren't nearly as hard on the engine as 1/4 mile passes down the strip. Plus there are a lot of variables negated in the dyno room compared to at the track. Cooling, fueling, tune, able to monitor everything during a pull whereas at the track you can only check things after a pass. During a dyno pull they are able to monitor everything in real time.

[@jeffdickerson3]

Fantastic video

[@matt_1969ChevyC1o]

Sounds like Danny now has a pile of slightly used parts to sell on marketplace lol Awesome build

[@whyamihereg]

Great info cool fix !!!!

[@JohnRoberts71]

Great content thanks for sharing

[@Berm_Blaster]

In japan they tap the valves, up and down, when lapping them. They say they do it that way because it mimics what the balve is actually doing while rngine is running. They tap tap tap, rotate, tap tap tap, rotate with however many times of each. They say spinning them doesn't create enough seal. I understand the mimicking of what the valve is doing during engine operation. But imo the valve should be a perfect circle as well as the seat. Thoughts?

[@orangerider2827]

Well the tapping isn't doing anything. Your not cutting any material with the value not making contact with the seat. The whole point to lapping is to take 2 nearly perfect surfaces and make them mate up perfectly. It's just material removal. Also Id make the arguement as a machinist thats made a whole lot of sealing surfaces of all types that radial cutting marks seal vastly better then perpendicular ones. Straight lines are bad at sealing. Yes lapping still has cutting marks its just finer and more even. One last thing you think a guy with a suction cup is putting nearly 200 pounds of force to mimic engine operations? No not even close. 2nd thing is nothing is ever perfectly round. It's always slightly off. Just depends on how much if it matters. Lastly just because Japan does something doesn't mean it's correct. They do a lot of things for just show and tradition. I'd argue it's that way more often than not.

[@indianaslim4971]

The tap-tapping is all about getting the lapping compound back into the area that is being faced, when you spin the valve the compound gets squished away from where you need it.

[@paulmeade9103]

Years ago o bought a set of factory gt-40 heads from Ford. The valve job was horrible. Had to have my machine shop do a valve job before install .

[@stephenleblanc4933]

air turbulence at the higher rpm range your intake should show the improvement you seek nice work

[@pontiac411]

How does one conclude it was the cam change when you changed at least 4 things?

[@daquifsta]

I came here to say this.

[@stevemorrisracing]

What 4 things? Corrected leaky valve job. This would be a negligible loss across the Entire RPM range. The 15psi added to the spring pressure is minimal also but knowing and having experience building this same combo using my cam design and understanding camshafts and boosted engines I know a cam problem when seen.

[@2damnkwik]

Curious, the For Track Dyno include for inertia

[@brianhilligoss]

So on rallycars where the point the air goes transonic we see this dip, then the rise then a dip when the air goes supersonic and then no more power. But that’s through a 32mm restrictor.

[@combustionjunkies4328]

Nice to see a Gen 3 Hemi on the channel.

[@ForOdin]

Don’t worry, Steve, I struggle with words, too

[@thedukeofspeed]

YOU ROCK !

[@robertaranda7371]

Back pressure in turbo housings? What size turbos?

[@OsborneMcclintic]

GREAT VIDEO!

[@colt4547]

Steve, Kyle Great vid guys. More, more, more.

[@roxannrousealvarado4645]

Love your channel..