My guess is that they were loading up the engine and didn't realize it was gonna give. Certain types of engine dynos are made for the engine to settle into a speed and then gradually apply load to the engine to find peak torque/hp versus the conventional type where you just slam the throttle wide open and let it go. As the engine experiences load changes towards peak, the engine rpms bounce around a bit as load is adjusted to find the happy equilibrium. So rpm changes would not necessarily indicate an issue. However, there was smoke coming out of places that smoke should not and coupled with the rpm bouncing as it did, it should have been shut down.
Yeah don't think I would want them to dyno anything for me. You can see several leaks while they looked on. How many employees does it take to turn off an engine, apparently more than those two lol.
Yeah, it looked and sounded like their dyno muffler setup was fouled out (clogged) causing intense backpressure. Looks like there might have been a Nitrous setup. When the NO2 was shot into the intake, it created an over-pressurization when combined with the effects of the pressure buildup in the exhaust that crossed the cylinder during valve overlap. Even w/o the NO2, this could still happen as described. Should have used ARP bolts!
Tristan Miller you dont load up big big boosted motors like that at low RPM, commonly you lift the head as a result. usually not like this though! however it is a diesel so it was probably pushing around 100psi into the thing haha
I don't see why they didn't shut it down way ahead of time.. I knew something was wrong the second it sounded like a full load.The pistons got too hot and expanded in the cylinder and seized.Some people run things to death cause it's not their loss. :/
Engine seizures do not look like this. This is a result of a failed Headgasket due to lifting the head from too much boost. When an engine seizes it doesnt explode like that
Justin DelValle Also if you watch closely the exhaust tube rises and you can see a huge amount of gas escape as that exhaust tube detaches from the wall. So the pressure of the exhaust having nowhere to go also played a part.
he's not bogging down, there putting a load on the crank to get an accurate dyno measure, but I feel that the load was too large and the motor didn't have the power/torque and just blew the motor apart. it's a horrible idea to load a turbo engine starting from idel, like pulling a big trailer while starting out in 4th.
guy tremblay Rightfully so but if you're going to film a video such as this at least have sense enough to take the sign down or better yet, don't put it here on UA-cam! All that excess smoke in the room should've been a clue; I would've stopped this engine run immediately had I seen all that excess smoke. Of course this wasn't a jet engine but as a jet engine tech myself that smoke would've been a telltale sign that something was wrong.
@@dave23024 I’ve got one better than that… About 10 years ago a buddy of mine sent his wife to a local Firestone shop to get her oil changed. She got in her car after they were done and drove it approximately 3 miles down the street before the engine all of a sudden quit working. They forgot to put oil in the silly thing and her engine seized up! One week and $7000 later, she got her a brand new engine complements of Firestone.
Agree with Sasha, exhaust back pressure started to lug the engine down and the exhaust started to flex seriously as boost / RPM increased, also exhaust smoke coming from turbo area indication of too much back pressure. Liked the stereo OHH when it gave way....
I’m no expert on these things, but when the exhaust pipe (which I am assuming is the big yellow thing arcing over the top) suddenly bends and flexes like that, that’s probably a sign the machine isn’t feeling well. Also is steam/smoke/whatever supposed to be venting from the front like that...?
so basically if the bolts holding the case to the cylinder housing were stronger(or the case didn't fail at that point) it probably could have handled a few more rip'ems. just generated enough pressure to overcome the tensile strength of the bolts. doesn't look like it failed anywhere else because the whole top end just popped off like a cork in a champagne bottle. OR judging by the way the exhaust stack puffed up and expanded before it blew apart... there was too much back pressure and it couldn't get rid of all the exhaust fast enough which in turn is what caused the build up of pressure that caused the failure.
I... I... I don’t know how to respond to this... this... really, REALLY bad comment. I’m floored, I guess. All I can say is, Silverss, that’s not a thing.
exactly! the whole point i'm getting at is the combustion pressure is what did it, not a restricted exhaust like what tons of people are saying what caused the head to separate. it looks like the fuel timing was too advanced causing peak cylinder pressure to skyrocket, which cause the studs to either break or pull out of the block. it wasn't "the pipe coming out of the engine was plugged and built up pressure till the engine blew".
When checking the 13th second, we notice the exhaust bulge, and this indicates a blockage inside it, which led to a rise in the pressure inside the engine compartments and consequently to its crash while at its very high speed
As others have said (and in other explosive postings) the engine shows signs of distress before disassembly. Men... gotta push it until something gives...
wow so much stupid in the comments.... this is a diesel engine, a Cummins.... thats what they sound like under load. Next, with the turbo that large, it will take some time to spool fully so thats why the extended dyno pull I think, next.... the head studs or block broke, this is more common in diesels because they run crazy boost levels (over 115psi) and the force in the cylinder cannot be contained.... look into tractor pulling, they have these kinds of failures routinely. It is hard to contain that kind of explosive power with stock components like the block and head involved.
Sedated and Restrained yeah it definitely failed the bolts or block it was probably making some crazy hp/tq but you know a top fueler can keep the heads on making multiples of this power level..... and running about hydraulic locked with fuel.
hmm, well i was thinking the threads failed, where the head studs go in, and i threw top fueler out there because they dont rip out... that often.... i would assume..... and cast iorn would be stronger on threads than aluminum of any grade....... so you make me think. it probably split the block around a cylinder which led to a split through a stud hole, and off with its head
I doubt the threads or studs failed. Cast iron is strong but terribly brittle, making fractures common in cast iron blocks. Aluminum used for engines is somewhat softer but more malleable making it more durable close to its limit, it will bend or bow instead of break like iron. The rule of thumb for threads is in steel you need the depth of threads equal to the diameter of the stud. Cast iron is 1.5 depth to the diameter, aluminum is 2-1 so if designed properly, the thread bearing surfaces are equally strong no matter material. Beyond that thread engagement, the stud is the failure point, no longer what it threads in to.
Ain't no type of headstud that would have saved this engine. They put too much boost into it, and allowed way too much compression under the manifold. As a result, well, boom...
They perform these tests for your benefit. I used to service cranes in these test labs, its all about making it last longer under extreme conditions. These techs are the scientists behind my driving like Ricky Bobby.
Judging by the black smoke, the injection pump on the side and the fact that the engine appears to be an inline block I'm assuming it's a diesel engine. When diesels put up big power numbers the get an EXTREME amount of heat coming out of the exhaust due to the unburned fuel that is still oxidizing as it's leaving the chamber. The reason the pipe expanded was because of this large amount of heat getting into the metal.
you see how the exhaust pipe after the turbo gets bigger in diameter. so the back pressure in the muffler after this pipe is too small an dblocked the gases to go out. I think so?
If smoke is comming out of wrong places is a sign that you should stop it
+George Sanaia idk, you don't hear any talk of "panic".
That induction is prob 2x the cost of the lower end...
nope. continue, learn, try again.
it's also a good time to stop when the exhaust starts expanding
Guillermo Guglielmo where did you see smoke?
Koda Wolf it was coming out from the front plate by the hp pump.
You could see the exhaust tube expand rapidly after the turbo fully spooled. The exhaust was waaaay too restrictive.
Diesel pulling guys like that for some reason, they basically choke their engines to make them roll coal
this makes absolutely no sense. If its too restrictive it wouldn't fill the exhaust tube as fast.
@@jankington216 really? I always assumed it was sometime with the intake or AFR.
@@Patrick-zr8tvwhat
I would of killed it when the engine made that funny noise, and that exhaust pipe swelled up like a huge sausage
Looked like a runaway Diesel engine...not much you can do to stop them.
@@tommy-ij9nd Fuel cut. does it every time.
would have*
@@freddyrosenberg9288 if it's burning oil from a leak (turbo...) the fuel cut and electric cut is not enough.
@@freddyrosenberg9288 no, diesels burn their own oil in a runaway sometimes
turn signal fluid was low
+Gino Productions thanks for noticing ;)
nah I think it was the washer fluid
+nathan hoover Nah bro. Actually, there was a problem with there Piston Return Spring...
Hahahaha nice one I hell laughed at that comment
g_ino shut the fuck up it was funny
More common than you would think. Heart felt condolences to the owner and the poor sod who has to clean up the mess.
I mean the sound and the smoke alone weren’t enough for them to say “maybe we should stop?”
That is fine, Kelton Smith. Physics said "Stop" and it was so.
But how do we know what wouldve happened then?
nope, take it to Level Five
That engine did NOT sound happy; why did they keep the throttle up???
Exactly😁
Ran away?
+James7796ify no
Diesel
My guess is that they were loading up the engine and didn't realize it was gonna give. Certain types of engine dynos are made for the engine to settle into a speed and then gradually apply load to the engine to find peak torque/hp versus the conventional type where you just slam the throttle wide open and let it go. As the engine experiences load changes towards peak, the engine rpms bounce around a bit as load is adjusted to find the happy equilibrium. So rpm changes would not necessarily indicate an issue.
However, there was smoke coming out of places that smoke should not and coupled with the rpm bouncing as it did, it should have been shut down.
the exhaust pipe bulging should have been the first clue that things might go sideways, or in this case, up really soon :)
The way that thing started laboring at the end, it was trying to tell them it was sick.
No matter how many times this pops into my feed I still watch it. Never fails. Every. Single. Time.
wow you could see the pressure build in the system moments before it flips out that was immense.
the second that exhaust pipe rose i would've left the room
+Benson fact, i saw that too...
When I saw the pipe expanding I was like "here we go" then it went bang. lol
that moment when the exhause is made to be flexable :I
Aeralius Co
the rise is an indication of some extreme pressure building up inside the exhaust pipe :V
ye
When he sells the vehicle, he can brag that it comes with a high performance blown engine.
Am I the only ones that noticed the blow-by come from the head gasket?
No you weren't.
nope, I would have shut it down immediately
xMoose338x nope, seen that and that should've been the red light.
Yeah don't think I would want them to dyno anything for me. You can see several leaks while they looked on. How many employees does it take to turn off an engine, apparently more than those two lol.
No I seen it had gasket went first if they'd shut down then probably coulda saved it
Engine: labouring and smoking in all sorts of wrong ways... *BANG*
These clowns: "Goodness me, that was a complete surprise".
yep, thats what my wife does to motors
Nick Silcox haha 👍
Rip
Nick Silcox, ROTFLMAO!!
Yeah, it looked and sounded like their dyno muffler setup was fouled out (clogged) causing intense backpressure. Looks like there might have been a Nitrous setup. When the NO2 was shot into the intake, it created an over-pressurization when combined with the effects of the pressure buildup in the exhaust that crossed the cylinder during valve overlap. Even w/o the NO2, this could still happen as described. Should have used ARP bolts!
A little JB Weld and you're back in business.
looked like it was back pressure from the exhaust, couldn't escape quick enough
If you watch the exhaust pipe at the rev-up, you can actually see it distort a bit, and then hear the motor load improperly before the head blows off.
it was definitely bulging i don't know whether that's normal though
yea you see the exhaust pipe swell up right before it popped.
GustheDestroyer87 i just now noticed that
Tristan Miller
you dont load up big big boosted motors like that at low RPM, commonly you lift the head as a result. usually not like this though! however it is a diesel so it was probably pushing around 100psi into the thing haha
approved tuning centre
I like the approved tuning center banner on the wall
Nice catch Scott! I reckon that one werent approved eh. LOL
Gary
I don't see why they didn't shut it down way ahead of time.. I knew something was wrong the second it sounded like a full load.The pistons got too hot and expanded in the cylinder and seized.Some people run things to death cause it's not their loss. :/
Engine seizures do not look like this. This is a result of a failed Headgasket due to lifting the head from too much boost. When an engine seizes it doesnt explode like that
Justin DelValle
Also if you watch closely the exhaust tube rises and you can see a huge amount of gas escape as that exhaust tube detaches from the wall.
So the pressure of the exhaust having nowhere to go also played a part.
you can see the exhaust lift up
When there’s smoke, there’s trouble
Goes in the kitchen too
And in bed. Uhm wat
Gauges going crazy... Passing red line... Engine sounds pissed... Let's keep doing it!
when the motor bogs down on boost that should be a sign to stop what you're doing turn it off and rip it apart to see what went wrong
he's not bogging down, there putting a load on the crank to get an accurate dyno measure, but I feel that the load was too large and the motor didn't have the power/torque and just blew the motor apart. it's a horrible idea to load a turbo engine starting from idel, like pulling a big trailer while starting out in 4th.
LSX_ moe The motor is clearly bogging.
All engines bog when the fluid coupling is loaded.
The moment the crankcase became overpressurized they should have stopped. It happened quick though
Maybe it saves time when the engine rips ITSELF apart. :D
faulure was dyno operator.. exhaust became blocked (rain seal or similar on building) found this vid some time ago and that came out
that back flip was slick
....And the sign on the wall reads "approved tuning center." Oh the irony!
guy tremblay Signs don't meant Jack. On top of that I've seen people who were 30+ years experienced screw things up just by so much as looking at it!
guy tremblay Rightfully so but if you're going to film a video such as this at least have sense enough to take the sign down or better yet, don't put it here on UA-cam!
All that excess smoke in the room should've been a clue; I would've stopped this engine run immediately had I seen all that excess smoke. Of course this wasn't a jet engine but as a jet engine tech myself that smoke would've been a telltale sign that something was wrong.
You'd be surprised. I went to a NAPA franchised mechanic to get my timing belt/water pump changed, and the idiots never filled my radiator back up.
@@dave23024 I’ve got one better than that…
About 10 years ago a buddy of mine sent his wife to a local Firestone shop to get her oil changed. She got in her car after they were done and drove it approximately 3 miles down the street before the engine all of a sudden quit working. They forgot to put oil in the silly thing and her engine seized up!
One week and $7000 later, she got her a brand new engine complements of Firestone.
"What's the torque on these head studs?"
"Ahh just snug em up."
You can see the exhaust tubing swell at :15.
Agree with Sasha, exhaust back pressure started to lug the engine down and the exhaust started to flex seriously as boost / RPM increased, also exhaust smoke coming from turbo area indication of too much back pressure. Liked the stereo OHH when it gave way....
When you see the exhaust system grow ya probably should have backed off the hammer fellas....just sayin’......
And that's when it started sounding different...probably damage was done already even if they backed off , now it's really toasted.
I think a few blokes need to clean their pants now. Lol
*********DANGER TO THE MANIFOLD************
but the floor pan didnt fall off?
@@cheeverracing89 at least they don't have to bother tearing apart the block
Best part is the sound of the guys when the engine blows
Kind of a modified Homer Simpson "Dooh!!!"
I’m no expert on these things, but when the exhaust pipe (which I am assuming is the big yellow thing arcing over the top) suddenly bends and flexes like that, that’s probably a sign the machine isn’t feeling well.
Also is steam/smoke/whatever supposed to be venting from the front like that...?
No its not supposed to come out there no, looks like the engine was just blocked from letting the exhausts out and thus this happened
Surprise!!!
8 Years Ago
@@thedarkshadows5669 2 months ago
@@Blackoutfor10days 4 weeks ago
@@tamilprakash9189 7 months ago
@@salakzzz2312 45mins ago
so basically if the bolts holding the case to the cylinder housing were stronger(or the case didn't fail at that point) it probably could have handled a few more rip'ems. just generated enough pressure to overcome the tensile strength of the bolts. doesn't look like it failed anywhere else because the whole top end just popped off like a cork in a champagne bottle. OR judging by the way the exhaust stack puffed up and expanded before it blew apart... there was too much back pressure and it couldn't get rid of all the exhaust fast enough which in turn is what caused the build up of pressure that caused the failure.
That’s why you want a wastegate on your turbo engine....
I agree , thats why on big power race engines the run head bolts all the way past the crank bearing caps , to a girdle .
Don't worry about a thing, it's nothing that $40,000 won't fix..........
I bet the only thing salvageable from this was the video.
See this is why Scotti says he is giving her all she got
but nooooo you wanted more power. 😃
Cause you had a bad day! Your motor blew up! You played a sad song just to turn it around🤣
looks like the suction fan to extract the exhaust stopped working and no where for the exhaust to go and blew up.
An engine wont blow up cause of that
@@americanpride9733 Exactly, like it was clogged. Pressure was still being forced and eventually it would just stop, on in this case blow. Scavenging.
I... I... I don’t know how to respond to this... this... really, REALLY bad comment. I’m floored, I guess. All I can say is, Silverss, that’s not a thing.
@@NorthernChev I never knew a person could stutter while writing.
@@timnell207 You mean typing... You're welcome.
exactly! the whole point i'm getting at is the combustion pressure is what did it, not a restricted exhaust like what tons of people are saying what caused the head to separate. it looks like the fuel timing was too advanced causing peak cylinder pressure to skyrocket, which cause the studs to either break or pull out of the block. it wasn't "the pipe coming out of the engine was plugged and built up pressure till the engine blew".
Danger to manifold gone real
Those injector lines looked pretty stretchy. lol
You had a torque wrench, and one job....
My god, i actually lol'ed at his "Oh ....".
x'D
When checking the 13th second, we notice the exhaust bulge, and this indicates a blockage inside it, which led to a rise in the pressure inside the engine compartments and consequently to its crash while at its very high speed
Oooh.. That is gonna cost some... Oooh..
As others have said (and in other explosive postings) the engine shows signs of distress before disassembly. Men... gotta push it until something gives...
Clearly, the modulator wasn't rectified.
Too much gas in diesel stream! The exhaust hose expanding at start of runaway was priceless.
No sense losing your head over this... ;-)
Take it easy man. Don't lose your head
All engines run on smoke. It's when the smoke escapes that problems begin.
Lol.. I'm baked and I found that hilarious. Thank you for making my day, good sir.
Still baked? 😂
That's gonna leave a mark.
On someone's bank account!
Who points the finger at who when something like this happens?
The squirt of oil or smoke would be a sign, but normaly you would hear a change of the sound before the entire top goes flying haha that was amazing !
why the engine sound like under load? i dont know much about engine
But will it blend???
I bet that was expensive
I can tell by the sound and the smoke comming from unlikely places that pipe getting big.
That was awesome!!!! never seen a head get that kind of liftoff..
+1 to everyone stating the obvious... when it hits full load and whines about it that bad, why keep going? It never goes well.
Башка решила пойти погулять))))))))
That may just be the most violent dyno explosion I have ever witnessed..
well...that escalated quickly...
wow so much stupid in the comments.... this is a diesel engine, a Cummins.... thats what they sound like under load. Next, with the turbo that large, it will take some time to spool fully so thats why the extended dyno pull I think, next.... the head studs or block broke, this is more common in diesels because they run crazy boost levels (over 115psi) and the force in the cylinder cannot be contained.... look into tractor pulling, they have these kinds of failures routinely. It is hard to contain that kind of explosive power with stock components like the block and head involved.
Sedated and Restrained
yeah it definitely failed the bolts or block
it was probably making some crazy hp/tq
but you know a top fueler can keep the heads on making multiples of this power level..... and running about hydraulic locked with fuel.
true, but top fuelers use a solid billet block and heads to help contain it lol, and even they have failures similar to this occasionally
hmm, well i was thinking the threads failed, where the head studs go in, and i threw top fueler out there because they dont rip out... that often.... i would assume..... and cast iorn would be stronger on threads than aluminum of any grade.......
so you make me think.
it probably split the block around a cylinder which led to a split through a stud hole, and off with its head
I doubt the threads or studs failed. Cast iron is strong but terribly brittle, making fractures common in cast iron blocks. Aluminum used for engines is somewhat softer but more malleable making it more durable close to its limit, it will bend or bow instead of break like iron. The rule of thumb for threads is in steel you need the depth of threads equal to the diameter of the stud. Cast iron is 1.5 depth to the diameter, aluminum is 2-1 so if designed properly, the thread bearing surfaces are equally strong no matter material. Beyond that thread engagement, the stud is the failure point, no longer what it threads in to.
right so it probably split the block then
Needs more boost!
Hell yeah…let’s do it …..more cowbell
i just watched that movie earlier today too. did not see this one coming at all
Block failed. 5.9 12/24 valve block with the tappet window is prone to doing this when over 1000hp. They separate below the tappet cover
Is this a split cycle engine?
No it a inline 6 cummins diesel
Its now a split in half engine.
Smokes drinks and probly stays out late ..
Wow. First "Engine Blows Up On Dyno" that actually blows up. 👏
My thoughts exactly,sounds like it was all starting to go wrong long before it blew!
yep. back to the drawing board.....
xD yep
I guess too much boost is possible.... ha
glad nobody was standing by .
Even i could see that getting ready to happen.
I see nothing wrong here
Robert Grosser I normally use ducttape,this is a minor problem.No major damage at all.
Forgot to add nitro methane.
So, what was it making right before it flipped it's lid?
Sure seemed like the exhaust muffler on the dyno was causing some serious back pressure. Watch that hose swell!
HOLY FUCK!! Thats why you buy ARP headstuds!
Looked like the bottom end to me
sc0tte1 it was the head...wow holy crap!!!
Ain't no type of headstud that would have saved this engine. They put too much boost into it, and allowed way too much compression under the manifold. As a result, well, boom...
So it actually split the block midway at the cylinders! Holy Shit! Its hard to see where it let go... another dyno queen engine gone to waste LOL.
Rob Chapman It didn't split the block itself. It ripped the head off of the block. The head basically is a cap for the cylinders.
His only job was to keep the camera straight.
Medard Siegienczuk Wouldn’t you jump backwards if a engine suddently exploded in front of you?
They perform these tests for your benefit. I used to service cranes in these test labs, its all about making it last longer under extreme conditions. These techs are the scientists behind my driving like Ricky Bobby.
Hi, it's the Dyno shop here, your engine is ready to pick up, and I do mean PICK UP!!!!!
MORE BOOST JOHN .....
Awesome video.... Terry
John D. Falcone CUMMINS ! CUMMIN A PART !
COMMANDER of the NORTH Thanks Buddy..... I already post of Ford engine blow out. :)
Are you Ford man?
***** its diesel but probably to much boost and or NO2 , or propane ?
COMMANDER of the NORTH Could be block crack and it blow up. They're crazy because they keep throttle up.....
Oh shit!
Judging by the black smoke, the injection pump on the side and the fact that the engine appears to be an inline block I'm assuming it's a diesel engine.
When diesels put up big power numbers the get an EXTREME amount of heat coming out of the exhaust due to the unburned fuel that is still oxidizing as it's leaving the chamber.
The reason the pipe expanded was because of this large amount of heat getting into the metal.
Brings new meaning to 'lifting the head.' Lmao
Little jb-weld and some ducktape and back at it again.
Welder can fix that 😂
Love how in the top left there's a tick and it says approved tuning centre haha!
Thanks you for the video I hope you have the time to find out what was wrong
When Vtec kick$ in!
Failed headstuds.
It actually broke the block, not the studs
+Galpin Speed Shop datum, ripped out of the block or complete failure of the casting
Very unfortunate. Sounded really good.
you see how the exhaust pipe after the turbo gets bigger in diameter. so the back pressure in the muffler after this pipe is too small an dblocked the gases to go out. I think so?