Why did that Manifold BLOW UP? Valve Guides Stick? Oh... and we won Drag Week 2023.

[@glamiskid50]

Steve Morris you’re the man who else would have the balls to tear one side of the motor apart and drive 40 miles and still win drag week. Love y’all.

[@mark006868]

@glamiskid50...Now if you could explain what ''tare'' means...that would be great...and he only removed the rockers....not ''one side of the motor''...

[@Wangsian199]

Edited and still can't get the facts right lol

[@glamiskid50]

129 friends and two douche’s

[@fopeezy3097]

Ned is the kinda guy who can suck a valve out of the cylinder bore... never let him forget 😁

[@AB-80X]

Man, the amount of bad jokes people can derive from that over the next decade or so, will be pretty epic lol. It was awesome, but man did he just set himself up for a boatload of banter.😀

[@Dan-jl1fk]

Ned isn't living this down...ever!😅

[@--_DJ_--]

Really should have got the shop-vac

[@kenmcguigan6805]

😂😂

[@KS-dg5zh]

Another way to hold that valve up is by feeding a thin rope threw spark plug hole and bring piston up to hold valve up

[@kipbrandel4545]

If the explosion happened in the intake runner then the force will follow the path of the runner out, like a shaped charge explosion. This would cause the pressure wave to slam into the top of the intake before it was redirected outward. If the explosion happened in the intake plenum it would more than likely rupture the burst panel due to the shape of the blast.

[@FangOfTruth]

That’s what I commented originally before seeing yours. So I deleted mine.

[@stephen_crumley]

@@FangOfTruthI’m about to do the exact same thing, I wrote something nearly identical before halfway through the video lol

[@NJDEVILz86]

Wait what?

[@godofplumbing]

Makes sense

[@Painterdave1981]

I worked on top alcohol dragsters burst panel is just incase there isnt relief somewhere else like aluminum studs on blowers ive seen them pop on startup more than down track.

[@theoldbigmoose]

Never thought Steve would build a Displacement On Demand (DOD) engine! 4 cylinders under power and 4 going for a ride. The lid blowing off, may have some connections with a supersonic shock wave propagating out of an inlet runner from an early combustion event. Shock wants to go straight, and the blow off panel would need a 90 degree turn.

[@freedomfox8183]

My burst panel is identical and worked as it should... guessing something else more violent than normal happened.. probably hard to be sure since he wasn't working on that car or riding with him... never saw another smx do that in 5 years though

[@KSIXRIDER]

I've heard of someone sucking the chrome off the bumper.....but a valve through a guide...impressive.😮

[@Hoaxer51]

Lol!

[@whyamihereg]

Steve makes drag weeks awesome! Congratulations to Steve, Tom, Clark, Ned what a kick ass team SMX !!!❤

[@t_crom]

except Toms isnt an smx

[@whyamihereg]

@@t_crom well 2.0 is

[@MagzV]

Find the thread capacity (either tensile or thread shear) of all those bolts holding the intake on, call it F. Measure the sealing area (simple length X width) of that lid, call it A. Find max pressure by F / A and compare that to your burst panel pressure rating on the lower intake manifold.

[@jeffreylynch3203]

At GM, we had a similar situation. On the Saturn engine we suddenly had a situation where exhaust valves would get stuck. This only happened at light throttle cruise on a fairly slight incline. To make a long story short, the engine shop was chamfering the valve end of the guide. At this light throttle, low load situation the tiny, and I mean tiny, bit of buildup on the exhaust valve would get very hot and begin to flow. Because the guide had a very slight chamfer, as the valve closed, the chamfer would jam the buildup between the guide and stem, and the valve(s) would stick. After cooling the engine the problem would right itself, usually. To prove this to engineering I took a guide and a valve, put some White Out on the stem, then, without much force, I used the palm of my hand and drove the valve home. It was stuck solidly. No one could believe it. I then did the same demonstration with a square cut guide, and no problem. So I made a piloted mill that could be used in a drill to square off the guides and the problem was solved. Engineering used my process to fix field issues and stopped chamfering the guides in manufacturing. The problem never occurs at heavy throttling or on decel.

[@bobroberts2371]

Some engines have a 1/4" deep counter bore on the port side of the valve guide as clearance for carbon build up.

[@rikiwakwak]

You should find a good airbrush artist, and let them paint the wood panneling on the wagon to look like the friction from the air is starting to char the wood. Charred wood, glowing embers and whatnot.

[@firefighter494]

That would be badass

[@MrTenhighguy]

What that guy said ☝️

[@tjsingh5163]

Steve’s videos are quickly becoming part of my favorites! I was smiling ear to ear when he was talking about getting the dropped valve out with a hose. I absolutely love that kind of on the fly ingenuity!

[@royduenas1192]

Yet another fine example of exemplary engineering and performance from Steve Morris Engines! Anyone who buys these engines is definitely getting more than their money's worth! Beyond impressive, Steve!👍🏼💯🇬🇺

[@ni_wink84]

You, tom and Clark were the only reason I watched drag week this year, made it exciting and I kept hoping for a good trip and big numbers out of both cars! Thanks to you and Tom for taking us along and showing all the details! Can’t wait to see the wagon back in action

[@ahart5530]

Thanks for answering my question Steve! Was awesome meeting you and super cool to by chance be wearing matching shirts. The fact that he was able to drive it to day 5 is a testament on how Incredible the SMX is! Great video as always! Austin Hart

[@dustywarner3139]

The Monte is absolutely gorgeous car...thanks for a little better look at it. Has to make you proud knowing your engine is in it

[@jamescardwell3254]

You and Tom killed it congratulations on job very well done all week, and another win on the 10th anniversary of Sick 1.0. The whole unsubscribing isn't just your channel I've experienced with other channels but so far not with yours thankfully because i love the content and usually always learn something. Thank you for all the hard work you put into making content for us gearheads to enjoy.

[@marcoshuerta8661]

I think it's the direction of the force that contributes to what breaks or blows off the car. For it to blow the burst panels the entire inside has to fill up with so much pressure that it bursts out back. For instance for a cup of water to overfill the liquid must fill the cup all the way before it flows out the top. Now if there was burst panels built into the intake manifold lid directly over where the pressure is coming from then you probably wouldn't see that as much.

[@baldhead7705]

Man it had to be a gut-punch for Ned when it happened, with the engine and busting the carbon fiber front end, but he took it like a champ

[@young11984]

I suspect Ned will never live down the “suck it Ned or Ned can blow it” jokes for years to come😂, hope he has a wife to torment him later too….all in good fun though.

[@jasonstanford]

Next time you drop a valve try using the compressed air and sucking technique together. Stick the hose on the valve guide like you did. Cut a slit on the opposite end of the hose about 3" from the end, just big enough for your blow nozzle to stick in the hose. Blow the compressed air out that end of the hose and it should create a vacuum on the valve guide end of the hose to hopefully pull it up. Give it a try. I have used this method to clean trash out of the bottom of a fuel tank.

[@matthouse8499]

Hey Steve thanks for all the content you guys do, always enjoy your shows and usually a learning experience as well 👍

[@strokermaverick]

Yes, sir!

[@AIM54A]

I wonder if the guide expanded enough to allow exhaust soot to form inside the guide closing the "extra" clearance when hot.. Then when it cooled down like you state the clamping force suddenly comes into play since the ID of the bushing is now reduced by the very thin coating of carbon that built up.

[@DavidKing-py9dt]

What i wonder is why it only did it in one head not the other?

[@ctpony8625]

@@DavidKing-py9dt heat in each cylinder is different. That side may be running hotter over time?

[@chevy66632]

It happened to both heads, other side was repaired right before drag week, earlier video on tom’s channt

[@myallstone]

That's my thinking too

[@RyTrapp0]

Yup, that's immediately what I thought. No reason why the ID of the guide itself(excluding anything on the surface) to shrink, and as Steve said it's obviously going to open up with those HOT EGTs, it's probably getting material shoved up in there, then baking it into some rock hard carbon. Turn the engine off, guide shrinks back down to machined size(more or less), and now the material buildup is clamping the valve stem. With Steve saying that he polished off some black buildup on the valve stem with 400 grit, that's pretty decent evidence to suppor this.

[@maxiumgolf1]

Longer screw’s (bolts)! Holds the boost, doesn’t need to burst the plate the top intake blew off the before the burst plate. Glad to hear they made it. Version “x” longer intake blots (screw’s)! Nice build…. Version “XI” valve seats! Great build Steve live and learn.

[@Berm_Blaster]

Sounds like these events teach you a lot about your engines. They get tested in ways you haven't been able to test them before. Now you probably have good ideas on how to make them even better. You are badass Steve never change.

[@NBSV1]

It's always wild how they can make so much power when racing and stay together. Then it's usually the street driving that's actually hard on them and breaks stuff.

[@gregmckinney6977]

Tom changed the exhaust before this Drag Week. He separated the Waste gate and turbo exhaust into two separate pipes instead of one. Maybe that increased the temperature on the exhaust valve or guide? Ned needs a SM shirt for the SMX parts altitude record.

[@edmitchell9307]

This video had two great stories. You and Tom running on one bank of cylinders and then to top that Ned's valve recovery was incredible. Both of those are some real "get it done" racing stories.

[@joshuahamilton6217]

Again that MICHIGAN HORSE POWER Knocks it out of the park Great job Steve on building those absolute stunning pieces of machinery with most of the whole motor being built from a chunk of solid aluminum right in house absolutely a game changer for those drag and drive car's you should be Soo proud of your accomplishment from getting put out of shops to some people keeping the equipment you paid for to wear you are now truly amazing sir.....

[@yarrdayarrdayarrda]

17:30 you should be able to calculate the tensile strength of the hardware and compare that to the spike pressure and surface area of the intake top and compare that with the intended burst panel failure point. One thing to keep in mind is the tendency to (over)tighten hardware, especially teeny 10/32 bolts and subsequent overstressing the aluminum threads in the manifold possibly created a weaker "connection" than what was engineered.

[@Ronaldl2350]

Thank you Steve for breaking down and explaining everything. Sharing your wealth of knowledge is fantastic!

[@prettyvacant2729]

Steve Morris Engines valve suction hoses. 10 bucks each for a limited time 👍 Thanks for taking the time to speak with me each day, I appreciated it.

[@bobroberts2371]

Time 2540 When using air to hold valves in place, I always turn the engine to TDC, apply a test burst of air to make sure the crank won't rotate then pull the valve spring. This way if the air is lost, the valve won't fallout.

[@Calango741]

When you were describing the valve that fell into the cylinder, my thought was: turn the crankshaft and raise the piston just far enough to make sure the valve didn't fall any farther and then put some sort of a dowel rod, obviously smaller diameter than the valve guide, with something sticky on it and see if it could be pulled back up; but I never would have thought to use suction, especially not just sucking through a hose with your mouth... Freakin' awesome!

[@fireballxl5328]

Total Force = Force/Area x's Area Area cover about 200 sq-in (just a guess) Area frangible burst panel about 8 sq-in (just a guess) Total force on cover about 25 x's more than force on burst panel To protect your intake cover the metal area holding your burst panel ( do you have a little groove around the panel wher it is expected to break?) should be smaller than 25 x's less than the 26 (or so) bolts holding your cover on ! Right now your cover bolting is "protecting" your burst panel ! All this assuming the pressure surge travels quite quickly - these are usually "sonic" (maybe 700 mph ?) Love this stuff !! All in all - a great weekend !

[@miceinoz1181]

Another suggestion for the dropped valve (only if it is still in the guide), remove intake cover (either automatically like Dunphy or manually by undoing the bolts), get a long pair of needlenose pliers thru the intake port onto the valve stem and lift the valve as much as the guide protrusion allows, rotate the engine a little so the piston moves up to the valve, release the pliers and repeat the process till you can grab the valve. Alternate method is to ALWAYS ensure the piston remains at TDC before doing something like this. SMX heads have ports big enough to sleep in, so I see plenty of access to grab the valve stem thru the port opening.

[@robertbuick1500]

About the blown manifold. I recall some information from The Pressure Vessel Manufactures Association and The American Society of Mechanical Engineering that suggest the most likely root cause is a failure in an applied torque sequence (human error). If a sequential torque pass or pattern was used, (meaning screws were tighten in a linear/serial pattern vs. a starred type pattern. Even if an initial and appropriate torque pattern is used, a followup or final sequential/serial pattern may result in a disruption or distortion in the sealing flange surface) a pressure wave can be formed in the flange interface that creates a weak sealing point (pressure wave causes the flange interface to stand proud despite applied torque) and result in a weak point in the system in which gas can more easily escape. Once pressure penetrates the weak point, the screws adjacent to the weak point see an applied force multiplication that opens the system like a zipper... and BOOM! In these cases it is rare to see mechanical or physical damage to the flange surfaces.

[@danjohnson1983]

Im so happy for you steve. Awesome to see how proud you are of your work. Top top top engineering. Well deserved self righteousness. 0% arrogance. 👍👍👍 keep it real and boosted from england

[@danmyers9372]

Have to wonder if there is a metallurgical issue with those exhaust valves guides? Might be worth a couple bucks to check into that. Love Alan’s Monte. That thing looks a flippin’ show car! I love the still picture someone posted of Ned’s intake lid close to 3 birds flying by. 😅

[@ctpony8625]

I think you are right

[@dunphyracing6562]

Awesome video Steve and thanks for all the love! That SMX powerplant is bad to the bone and is going to take us lots more places from here. Thank you for everything and keep doing what you do my friend… You watch next year everyone’s gonna be stocking, rubber hoses in their trailer for valve retrieval lol.

[@Kneedragon1962]

Hello from Brisbane Australia. The intake explosion ~ I can offer one opinion. I drove Ford taxis with inline 6s (the forerunner of the Barra motor) in Brisbane for years, mostly with LPG. If the owner - operator did 'services' for a time, change the oil and the filters but not touch the plugs or plug-leads, they'd get to a point where there would be 'cross-talk' between the silicon plug leads, and the spark down one lead would jump into another, and the engine would backfire. This had a way of not happening when you had manifold vacuum, but if you sat at a red light for 30 sec or more, and then started to accelerate, the damn car would backfire and stall, 6 ~ 10 feet into the intersection, and blow the lid off the air-filter box. It would then not restart until you opened the hood and replaced the lid on the airbox. Usually, there was no real damage and it simply went back on, but sometimes it would split & burst the box. It generally didn't fill the passengers with confidence. Or the driver. I suspect what's happened here, is the same thing. Spark has jumped from one plug-wire to another, and fired 2 plugs at once, one on the intake stroke, where the intake valve was open. Result ~ massive backfire, and blowing the 'airbox' apart. TLDR ~ that's an ignition problem. Change the plugs, change the plug-leads. If it is using a modern coil-on-plug arrangement, look into why one coil-pack has fired at completely the wrong time.

[@AmirPomen]

Rule of thumb when replacing valve spring/seal without pulling the heads... always put the cylinder we were working on at TDC... Then put a ziptie or rubberband around the stem to lock them up whenever u were going away leaving the work even for a minute 😁 Just to avoid this kind of headache valve dropping..

[@ronjones-6977]

So, Mr. Sissy Foot stayed with it on that last pass. Good for him. Glad you guys got it done. Thanks for everything you do on this channel. You are a pretty damn good teacher.

[@rodneymunsterman2287]

Hi Steve Thoroughly enjoy the content Have to make a comment on the intake cover reaching a high earth orbit. First reaction is that you only use 10/24 hardware in aluminum, solution is to either helicoil the 10/24 or upsize to 1/4" 24 Ultimately the best choice was the first one, using 10/24 in aluminum. Your only as good as your weakest link, if the fasteners in the intake were more robust other components would have failed. Would like to also comment on a previous past video where the transportation of Pearl over rough roads caused the roof glass to break. I used to be a crew chief for a winged sprint car. Sorry. Trailered travel of a race car if not secured correctly WILL CAUSE wear and tear on the suspension components as if the car traveled the miles itself. We built specific blocks to stabilize the chassis during transit and anchored the car frame against the blocks to prevent any chassis movement during travel. This way the suspension components, and shocks don't experience any unnecessary wear. Just my 2 cents for what its worth.

[@kevinfunk83]

Out of curiosity will we be seeing what the other bank guides look like? I’d be super interested in that! Great video, congrats to you and Ned on his 6.40.

[@Peteblz1]

Great showing for Steve Morris engines at drag week. You just keep proving the smx is the ultimate drag and drive engine. ❤

[@txsailor57]

A old timers trick to change valve springs without a air compressor or even if you have one and don't want to have a issue is to roll the motor over until its at bdc then stuff sash cord or some other soft line in the spark plug hole. Turn the motor gently by hand until it locks up and r&r the spring. Don't forget to leave the tail hanging out so you can remove the line.

[@j.sarnak1391]

Watching all you guys working together to get everybody across the finish line is just some great stuff. This is the only thing left that makes me proud to be an American. How is it possible we have left the political class destroy our reputation as "good" hardworking people??

[@thomascarr3047]

I love how you treat others. No problem pointing out others when they do well and proud of them

[@michaellafleur2077]

Steve the week was such a blast watching you do interviews with the other racers, good stuff always intertaining with you. Crazy week for sure. Congrats to Bailey and you for winning for the 6th. time.

[@stephencarter1442]

I remember my Old man do that on the trail in a Jeep 250 miles from nowhere, Genius circa 1974, 20 miles an hour

[@johndoran3274]

Funny thing I learned over the years is heat cycling on parts you run for a decade or more does crazy stuff to the composition of those parts. Think about how many heat cycles those guides had on them and you really can’t be mad they failed, just when they failed.

[@edmahonejr.9364]

Exactly.. especially exhaust guides on a boosted engine. 10 years old.😂

[@AB-80X]

Annealing is definitely a possibility.

[@davidblain2714]

Can we say Stevie Fast for the win, careful........ He's coming back,.......

[@CLCIII]

Automotive Forsenics at it's best with Steve Morris! Thanks for the insight into the issues that happened on Drag Week. A lot of strange firsts for SMX's. Your experienced intuition was fun to hear. As Always, May God Bless you and yours! 😇

[@michaelloth5870]

Great job on the Viper SMX dropped valve recovery with the hose. Thank you for the explanation on the burst panel not bursting.

[@charleshenshaw9099]

Steve, the procharger NPK cars have the burst panel in the top of the intake and most of the time the panel blows out. But everytime the front end is damaged. The flames that come out of it is wild.

[@54raceman]

Part of the reason They went back to cutting holes in the hood and running top stack panels was because they were blowing the lid off like that with the rear panels like that intake has but who knows if it has anything to do with it or if it’s just the fact that all racers are head cases

[@rayc.1396]

When you remove a valve spring in the car, fill the cylinder with rope and leave a long end out so you can get the rope out.

[@54raceman]

The air pressure takes care of that and is the correct way of doing it but the problem was they weren’t smart enough to put the piston at tdc so the valve couldn’t fall very far and they lost air pressure

[@michaelmustachio5318]

What makes air the "correct" way? Rope & air both work, until you lose air. 😢

[@rayc.1396]

The only way you lose rope is to pull it out, what happened to their air?@@michaelmustachio5318

[@camtheman3507]

Path of least resistance, you are on the right track, if it backfired upwards towards the cover, that’s where all the energy went first. The bolts just weren’t strong enough to hold it all and direct the energy towards the blast plates.

[@skidpignz2584]

Hi Steve cheers for the awesome videos and my mate taught me a good trick when changing valve springs with the head still on you can use the piston and some plastic piping or nylon rope put in through the spark plug hole into the bore to hold the valve up no fear of losing the valve

[@NINEWALKING]

I have a bit of an alternative theory regarding the intake manifold cover taking off in the direction of the moon 😊 Joke aside, it looks to me that something like an effect of the shape charge or HEAT projectile happened in therr. That explosion hot gasses were focused by the length of runners into the beam that was directed towards the intake top cover. So, most of the energy worked on/was applied to the cover. Like when the shape charge is cutting precisely where it was focused and almost not touching things a few inches further or how HEAT projectile makes a little hole and almost does nothing few inches further. Explosion was so fast, and the transfer of the energy was so fast that there was no time for the gas expansion to happen to equally rise the pressure in the manifold and blow up the security blow out panel. In case of slow rise of the pressure or extreme boost, there is a volumetric thing happening, and pressure is almost equal in the whole manifold and then sure weakest link is going to fail. But in the case of the shaped explosion, that explosion is focused in one direction, and that's the direction of the line that comes from the runners. Considering it happened at high rpm, it was like multiple explosions were most probably more of them that happened were on the driver side bank because cover flew but to the right side. This is what I think happened. Imagine flames of the back fire explosion running out cylinder, true the runners getting focused and hitting that cover sending it to the moon. Shaped charge effect.

[@brucestclair]

My best guess based on the info from the video is a blocked or reduced water flow on one side of the engine. Which may have caused excess heat only in one head.

[@mattmanyam]

Or the mixture was lean on that side... faulty oxygen sensor, or fuel rail problem?

[@bigduphusaj162]

it done it on the other side too but was repaired right before the event. Just to clarify that

[@genedavis759]

Thought on intake issue is the direction of the force coming in from the ports having more influence on lid than window. Anyways love the program!

[@tomstrum6259]

Amazing vid content !!......When Removing a valve spring w heads On, I've Always hand turned the Crank to keep Its Piston at TDC for Exactly that reason.....Valve Tip usually forced to stay Above valve Guide if cylinder air Pressure is lost for Any reason.....Never came close to Dropping one like that.....

[@Smokkedandslammed]

Whole lotta "wha-ha-happen-was" in this video 🤣

[@danieljameson8000]

Always love the attitude, "well that sucks..pauses.... rolls up sleeves and gets to work". Re:intake - ive seen a really odd behavior on coils that have a shared driver and main ground path as a coil or 2 start to go bad (or the ground for the coils isnt good) another coil can draft off the bad coil due to stored capacitance and misfire coils sharing a common ground point. The driver in the ecm will have about a 3k resistor between each driver ground and ground to isolatw the coils from each other. Coil discharging during with the intake valve open on a front cyl the pressure wave would never get to the burst plate. Maxing out a 3.5 bar map there is no way to really know what the pressure was but it was above the tensile strength of several bolts or their threads.

[@Rebar77_real]

Crazy roundup for the end up the week. Grats guys! Cool ass valve trick!

[@Zmaxdave]

I had a very fresh motor in my 68 Mustang. Heading from Phoenix to Vegas. Noticed a tick in Kingman. Pulled the valve cover and retainers on number one intake were barely hanging on. Pulled the pushrod, rocker and plug from that cylinder. Cruised into Vegas, no problem. The car sounded like Chitty, Chitty, Bang, Bang😂

[@gaetanbolduc8417]

My guess is that you could be very right with the surface area of the blowoff valve vs the air intake…a 100 psi would create a tremendous force on the air intake stripping all bolts…could be fairly easy to calculate the efforts needed to strip all bolts…blowoff valve necessarily have a design spec to blow open!

[@AB-80X]

If that explosion came from the intake runner, it will hit that manifold lid like a hammer. Some manifolds deliberately have the burst panel on top for exactly this reason. Also, look at that manifold. That shape will contain the pressure wave and try to compress it even further. Maybe a convex lens on the inside would help.

[@steveridge4596]

Just awesome presentation!!!!!!!!! You're right.... One just might learn something, i absolutely am. You're fine tuning my understandings of exactly how motors work, thank you bubba 👍👍👍👍👍👍👍🤟

[@deepthoughtsshallowworld]

The car my dad bought for my mom just as they got married was a 1970 ss454 Monte Carlo. Dad restored it when I was a kid. It doesn't have the original 454 but it has the period correct parts on it again.

[@thewitt76]

You are the winner too, building all the engines in the fastest drag n drive cars, that's something big to be proud of.

[@baldhead7705]

1.0 it's probably my favorite out of the Camaros put that big block you build back in the day that is a very smooth running and sounding engine. Awesome work Steve!!

[@DM-eb7tu]

Hey Steve, thanks for a wonderful week of awesome drive, repairs, in the pit interviews, and racing.

[@bristol831]

You guys learn something from the value dropping? I did. B4 you remove the springs make sure the piston is up far enough where the value can't fall that far!

[@54raceman]

Right when I seen it i had to rewatch it multiple times because i couldn’t believe they were that stupid

[@mattmanyam]

It was probably at or near TDC when they started, but sometimes the air pressure pushes the piston down.

[@thomastribble2498]

The intake being blown off could be due to the direction direction of the pressure wave, the top was exposed to the front of the pressure front and the burst panel is to the side of the front, that's my two cents!

[@Baard2000]

That happened also to a friend of mine when replacing valve seals in VW diesel engine. Valve dropped ..... and he could watch through the guide the valve standing on the flat piston .... He tried a million times a full afternoon rotating the engine slowly .... but finally gave up and removed the head ..... 🤯🤯🤯🤯

[@jcnpresser]

Man that Monte is an awesome street car, remember seeing it on Devin’s channel when he was wiring it. Super clean car! Congrats on your engine program! Working well for everyone!

[@br549rdr]

Truly admire how you keep such a close eye on your product. Badass. Thanks for explaining.

[@corey_nz]

Did some quick maths of the forces based on estimated measurements. Assuming the manifold lid is approximately 20 inches long and 9 inches wide, that's a surface area of 180 square inches (ignoring that it's curved). The burst burst panel seems to be rated to burst at 200 to 250psi. 180 sq. inch * 200psi is 36,000 LBS of force acting on the lid alone. 250psi is 45000 LBS of force. 36,000 to 45,000 LBs of force (potentially) that caused the manifold lid to blow off! 😮 42 bolts holding it down, that's 800 - 1000 LBS of force on EACH bolt

[@richlounder2465]

You are the only really high performance guy regularly on the tube, I can guarantee everyone of your 400k subscribers would love to own a SM engine, most of us aren’t financial enough unfortunately but this is the next best thing is to dream! Totally awesome content Steve!!

[@talleddie81]

These are my favorite videos, discussion of the how and why with engines. I too was really curious why the burst panel didn’t fail first.

[@54raceman]

Someone told me once that a slow explosion blows the panel a fast explosion blows what ever the heck it feels like

[@Trucker-Belly]

Heavy foot= danger to manifold😂

[@FastSS02]

AHH SHUT UP!!!

[@johnnystanley4469]

Well that's a cool trick on that intake valve thank God it is titanium and the blow the top of intake off and duct tape back on he'll of a weekend for the SMX powered cars Congrats to Tom and Steve on a well fought win Hood show God bless

[@bobroberts2371]

Some stock guides have a 1/4" deep counter bore on the port side to minimize sticking from carbon build up.

[@ronaldspins]

Not only did I learn something @ 25:30 My mind is blown by the "Quality" of these problems it's like miracles are being performed.

[@williamgreen4757]

The human valve vacuum, good deal then. I think that cover blowout was what we call in the military a FOD strike just like when helocopter blades are taking off in a sandy enviroment you can see at night with night vision gogles sparks on the helo blades. The FOD caused a spark to be thrown up the intake after something was injested through the turbo, striking the impeller blades, perhaps a garbage thrown off a tire or pulled from an intake filter if he was running one. You get the idea. A sparke at the say the number one injector just before the intake valve opened so the flame or shock front traveled from front to back under the blown cover. Its just an idea.

[@CLCIII]

That Monte Carlo is AWESOME! I had a friend with one the same color inside and out. Came with a 400 small block that was notorious for overheating back in the day.

[@KRAVER_]

I have Never hear of someone blowing an intake manifold off like that before, that is crazy. It was an Extremely vicious explosion to sheer all those threads and bolts.

[@hankhank3129]

Thanks for answering the burst panel question. Makes sense that PSI vs Surface Area in such a violent explosion. Maybe a new area to explore is burst panel design. Realistically, they make blower fasteners to break and restraints to catch it before the blower case or the engine block grenades. Keep up the content and science Steve! Thank you!

[@richardmoerke9329]

What a crazy week for you! That many motors out there is great. Sounds like you have this setup good for the power these things are putting out.

[@davidfleishman2275]

If you are removing valve springs put an elastic band around the valve stem and around the other valve stem.If you loose air the band will hold the valve in place.

[@glenryan6569]

Bet your happy having customers like Ned because he's going to pound on it and never give up and the Monte Carlo guy with his high school car that's just happy to have it wicked fast and reliable. Both seem like great guys.

[@3stoogesrocketry]

Steve, in regard to your flying manifold. Wow what a testament to how strong your product truly is.

[@ctpony8625]

Creep and relaxation are also heat activated The important, and often detrimental, phenomena of creep and relaxation can also be activated at high temperatures. Creep is when a material deforms slowly and permanently due to constant mechanical stress, even though it is below the material’s yield strength. Relaxation is when the material, even though it is initially loaded below its yield strength, releases stress when exposed to a fixed strain by transforming a portion of this elastic deformation into plastic deformation. Creep or relaxation in metals both occur more readily if subjected to elevated temperatures, even before the loads or deformations exceed the yield strength of the material. The extent of creep or relaxation depends on the amount of stress, the temperature and time of exposure. These phenomena can be activated from about 200°C for steels and as low as just over 100°C for some light alloys and stainless steel. To meet really challenging applications, designers may choose to use creep-resistant alloys that are nickel-based or cobalt-based. Keep in mind that creep and relaxation permanently modify the parts in terms of deformation or stress relief.

[@ctpony8625]

Just a thought. Someone mentioned metal fatigue. I agree. Ovwr time slow creep or annealing may have happened which will be permanent perhaps.

[@figitt88]

In air cooled VW engines, with turbo.... that part of the guide is cut off as it will eventually chip away and in up in the exhaust side of the turbo. trim the guide down, out of the exhaust stream of the port.

[@tonym995]

You are awesome and so smart! Keep being a great human. 🙏

[@BIBSTERSrepairshop]

Fun to follow along all week great to see the SMX doing what it does best. Hope to see you back at sick summer next year if they have it.

[@bobgaudet9941]

You're right about the surface area and the forces that push against it I believe it needed a lot bigger bolts the hold that kind of force and the reason for the force I believe one of your intake valves stuck for a Split Second during ignition which spike the intake probably over a thousand pounds

[@vancem.bufordsr.5425]

MR. SMX SIR=U & Ur Son Rule The Engine World... 😊❤🎉❤🎉❤😊 Major Suggestion PLEASE Design A "Big-Hat Blower Combo BECAUSE Most The Fastest Teams Run Switch'd To Blowers... Ex/Kye Kelly Went From Mussi 950ci Nitrous To Noonan/Blower Combo I'd like to see your engines in no prep King cars next year utilizing strictly a drag engine blower combo... You are the man and you have the goods to deliver I'm sure if you put your mind to it you could design that combo better than Newton or a ProLine or anyone!!!! Love your videos you explain things crystal clear your craftsmanship is aboveall bar none in my opinion!!!!! All it would take is one motor in the no prep Kings and you'd have 20 of them sold, just saying easy to see from where I'm sitting this perspective. By the way I think God for you and your videos and your motors everyday and I can't wait to put one in a car myself it's got to be the ultimate experience God bless you and good luck this for the remainder of this year with your awesome wagon... I know I sound like your biggest fan it might not hurt to put your son behind the wheel of that big dog you've designed, that's what the awesomest do!!!!!!!!! GO GET'M ALL!

[@randalltufts3321]

Congratulations on the week and the Win! Seeing multiple SMX at the event and 1.0 really made for a great showing of just how versatile these engines are and how powerful they are with the proper tune. That valve tho! LoL. Amazing. Thanks for a great week of videos 📹

[@SmolAdventure]

My goal is to be like you Steve! You make such a fantastic engines and they all WORK!

[@Papa7Bravo]

This weel looks like it has been a fantastic week, i mean in the sense of what has been fixed it's awesome. Ned was one step away from sucking a golf ball through a garden hose.

[@joeyjojojr.shabadoo915]

It's funny you should mention Blower's coming off engines, as Kye Kelley just had a Blower jump off his Noonan Billet Hemi and he said it's a safety feature to run Aluminum Studs, so that they shear. He replaced the aluminum studs after the blow up and everything ran fine.

[@edpetrocelli2633]

Glad to see your motors do well, Service after the sale! A rare thing nowa days. Some interesting problems to solve for sure especially Bailey`s. I wouldn`t know where to start. A seasoned trouble free engine years old and locks up 4 exh valves in one head and the other head runs merrily along. Can`t wait to hear what happened and why. I`m a old guy and I have learned a few morsels of great info from you. I thought of doing one of your tricks but was afraid to try it, putting solid rollers and springs on a hydraulic roller. Well I did it and it works great on my street motors. Thanks Steve....7400rpm with a realitively mild grind easy peezy.