This totally blows R.I.P 2.3 stroker:(

[SPYDERGSTTUNER]

OK so today was a very shitty day for me. My usual routine became a nightmare today, I don't drive my dsm much at all so I start her her up about 2-3 times a week just to keep everything flowing and keep my battery in good shape. Well today that took a very unusual turn that blew up my freshly built 7 bolt stroker. I jumped in, sat and grinned at the the beauty of my beast I stuck the key in the ol ignition to hear my motor rumble like usual and it did..... for about 5 seconds. Suddenly for no reason whatsoever it revved up completely all the way to redline and stayed there no matter what I did. I frantically shut the ignition off, nothing, pegged all the way to 9k,turned off the timer,nothing, still pegged, put my foot under accelerator pedal to see if it had gotten stuck somehow and it wasnt, yet still wouldn't unrev. So me in panic mode popped the hood yanked the battery cables off still stayed running,redlined, and after about 3 minutes of constant redline, BOOOOMMM, shot a cylinder and a rod out the side of the block. Now what in the hell could have caused this weird mishap to just rev for no reason and why it kept running after all the power was cut???

 

[Calan]

Someone remind me again why anyone would ever run a turbo timer?

Hopefully, some of it is salvageable.

 

[Spyderman7]

Now back when I had my 2nd gen the same issue had happened but mine turned off. What had happened was the battery hit the front strut bar and then the throttle cable became welded fast .(I had bought the car only a few weeks before hand and had not noticed that that could happen) but this happened while I was driving it. Check and see if you can move your throtal cable at every possible spot.

I had a 2G that did the same thing about 5 years ago .Welded the F***ing cable and reved the car sky high .luckly all I had to do was turn the key off .Mine was a grounding issue.

We had just put a new motor in ran the car for about 2 min change the oil started it back up and it idled for a sec and then took off .The ground on the battery was loose and I also didn't have any other grounds going to the motor at the time.

I would def look and see if the cable is welded

I would of burned the car on the spot if it blew the motor that way

 

[JusMX141]

SO many things you could have done to get the engine to at least slow down or shut off entirely in a runaway situation.

- Unplug the MAS.
- Unplug the Cam Angle Sensor.
- Unplug the coil pack.
- Unplug the injectors if you don't have the pain-in-the-ass 1G/early 2G clips.
- If it's on the ground with nothing parked too close, put it in 5th gear with your right foot firmly on the brakes and just dump the clutch.


....or you can stuff a rag in the intake and ruin your turbo like this dipshit:

http://www.youtube.com/watch?v=3NRaqgab0_w

Of course diesels have no ignition system to disable, so his hands were tied....and he almost lost a couple fingers in the process.

 

[danielsl1999gsx]

Sorry to hear about this man, must suck watching it slowly die and not being able to do anything.

On the side note, JusMX141. What could be done to stop a diesel in this situation? Beside the obvious rag in the turbo .

 

[AK Maniak]

Sorry to hear about this man, must suck watching it slowly die and not being able to do anything.

On the side note, JusMX141. What could be done to stop a diesel in this situation? Beside the obvious rag in the turbo .

Just say #### the rag and stick your hand in there.

 

[mchustle]

Wow that sucks man. I personally would have just threw it in 5th gear first thing and dumped the clutch. I also understand its hard to think under pressure like that. Good luck with the rebuild.

 

[counti41]

well that happened to me once throttle cable got stuck at WOT so i stuck it in 5th gear and stepped on the brakes stalling the motor, you could have saved her if you thought of that at that moment, im sorry for your loss though. but damn a stroker motor revving to 9k thats gotta be something to be proud of though!!!

 

[isantop]

Lol i know but it wasnt for it my 1g would have been a pile of ash

I'm assuming you're talking about the drink, not a bottle of Nitrous Oxide...

To the OP, so sorry about that. You know you built an incredible engine for it to have hung on that long. Good luck!

 

[Nekid]

On the side note, JusMX141. What could be done to stop a diesel in this situation? Beside the obvious rag in the turbo .

Cut the fuel line or cut the fuel pump wires if it is a electric fuel pump (I would imagine something that old would have a mechanical pump) or find another way to block off the air completely (CO2 fire extinguisher)

Another way, as he mentioned already, if it is a manual, engage the highest gear, apply all the braking you can muster and dump the clutch.

That video, I was waiting for his loose shirt to get caught in the front pulleys.

 

[Archer Fabrications]

If that ever happens again to you for some reason, just pull the MPI fuze, EVERYTING will stop working. sorry to hear about your misfortune.

 

[mchustle]

I'm assuming you're talking about the drink, not a bottle of Nitrous Oxide...

To the OP, so sorry about that. You know you built an incredible engine for it to have hung on that long. Good luck!

Why n2o is not flammable so it should work to put out a fire.

 

[Arthris]

I'm assuming you're talking about the drink, not a bottle of Nitrous Oxide...

To the OP, so sorry about that. You know you built an incredible engine for it to have hung on that long. Good luck!

Bottle of N20 a 5lb bottle that had some in it. Not much but enought to have about 600PSI worht left

Why n2o is not flammable so it should work to put out a fire.

Absolutely. N20 is a inert gas. Its the gas they use at the dentist to make you all loopy. But they put a adative in commercial N20 that will kill you if you huff it. It takes high pressure and heat to break apart the bonds that hold the Nitrogen and Oxygen together.

 

[91FWDSM]

Not to thread-jack. But to answer the question of runaway diesel motors, Cutting fuel WILL NOT stop it. Runaway is caused by the motor actually running off its own motor oil. Usually a bad turbo seal. Covering the air inlet is basically the only way to stop it. Most heavy diesel vehicles that this happens on have non-synchronized transmissions so putting them in gear at that high of an rpm is not an option.

As with everyone else Its a sad day when anyone's motor dies, especially such a nice one

 

[gtrej01]

I have a spare 7 bolt bare block if your interested I would donate to ya.

sorry to hear the mishap and good luck in the rebuild phase.

 

[bryanwheat]

Not to thread-jack. But to answer the question of runaway diesel motors, Cutting fuel WILL NOT stop it. Runaway is caused by the motor actually running off its own motor oil. Usually a bad turbo seal. Covering the air inlet is basically the only way to stop it. Most heavy diesel vehicles that this happens on have non-synchronized transmissions so putting them in gear at that high of an rpm is not an option.

As with everyone else Its a sad day when anyone's motor dies, especially such a nice one

From the looks of it, his throttle linkage to the injector pump got jammed and held the injector pump wide open. So cutting the fuel would of helped in this situiation.

 

[Nekid]

Not to thread-jack. But to answer the question of runaway diesel motors, Cutting fuel WILL NOT stop it. Runaway is caused by the motor actually running off its own motor oil. Usually a bad turbo seal. Covering the air inlet is basically the only way to stop it. Most heavy diesel vehicles that this happens on have non-synchronized transmissions so putting them in gear at that high of an rpm is not an option.

Depends on the cause of the runaway, when it actually starts consuming its own oil, you are correct, only air/smoother or stall.

It is also true that a lot of heavier manual trucks have a clutch brake. As long as the input shaft stops spinning, you can get into gear. Unless there is horrible clutch drag, after jamming in the clutch, it will slow down enough (eventually) to get into gear regardless of what the engine is doing. If you are on the move, just keep it in gear and brake. The brakes should be quite sufficient to bring it down low enough to stall. If you are auto...you are screwed if you are on the move.

 

[Kapok6]

On the side note, JusMX141. What could be done to stop a diesel in this situation? Beside the obvious rag in the turbo .

Put a wide enough bored across the turbo inlet

 

[phunny]

Sorry for your loss man, and everyone else hindsight is always 20/20. I'm sure the OP knows everything he could have done to save his motor but when you start your car and it redlines and you turn the key off to no avale... I'll put money that 90% of us would've froze for a minute.

 

[JusMX141]

Not to thread-jack. But to answer the question of runaway diesel motors, Cutting fuel WILL NOT stop it. Runaway is **normally* caused by the motor actually running off its own motor oil. Usually a bad turbo seal.

IF the blown turbo is feeding oil to the engine through the charge piping, then choking off the air supply is the only thing you can do as diesels do not have throttle plates.

Otherwise, if something like the accelerator or rack sticks like in the video example I showed last night, you could theoretically disable the fuel system somehow but it's quicker and easier to throw a piece of plywood over the intake.

 

[91FWDSM]

I'm by no means a diesel tech. I have a class A CDL and just from my own experiences that is what i've seen. Certainly wasn't trying to say ALL cases were as such. Glad to see constructive criticism

 

[ofgofg]

Has it been figured out why this 2.3 shat itself? Welded throttle cable?

 

[SPYDERGSTTUNER]

Sorry for your loss man, and everyone else hindsight is always 20/20. I'm sure the OP knows everything he could have done to save his motor but when you start your car and it redlines and you turn the key off to no avale... I'll put money that 90% of us would've froze for a minute.

That's exactly what happened, once it blew i thought of things that I could've done but at that moment I was in shock, 100% panic and freakout mode . I was mad at myself for not being able to think of everything else that I know would kill the motor but in a moment like this is very hard to think and think straight. I know these motors like the back of my hand so I know better, yes I know pulling the plug wires would've killed it instantly, same with the mpi fuse, the injector plugs and everything else mentioned but like I said is hard for someone to think straight when you have a million things running thru your head all at once with a motor revved and very loud exhaust screaming in your face.

I haven't figured out what it was yet, I'm at work and haven't been able to look at it, as soon as I get home I'll start tearing into it to try to figure things out. I'll keep this updated as I progress thru the teardown to find out what the cause of all this mess was.

 

[counti41]

Not to thread-jack. But to answer the question of runaway diesel motors, Cutting fuel WILL NOT stop it. Runaway is caused by the motor actually running off its own motor oil. Usually a bad turbo seal. Covering the air inlet is basically the only way to stop it. Most heavy diesel vehicles that this happens on have non-synchronized transmissions so putting them in gear at that high of an rpm is not an option.

As with everyone else Its a sad day when anyone's motor dies, especially such a nice one

the tramsmission isnt moving and if the countershafts in the trans were moving just push the clutch to the floor to engague the trans brake and that should stop the input shaft from sminning then put it in highest gear, only thing with big diesels is that you may break the transmission or clutch. you can also flood the engine with water its a bad thing to block the intake of a big diesel too ### it might just suck in whatever is in front of the turbo inlet. or you can try it and let me know how it turns out... make sure you post a video on youtube though

 

[91FWDSM]

Only because I feel as if people misunderstand, I didn't say it was the ONLY way to shut down a runaway, I used the word "basically" loosely. If you want to shatter miscellaneous pieces of your ten speed that's fine. In an IDEAL situation I would block the inlet with a sturdy object that won't be sucked into the turbo. I feel that would cause the least destruction. But like I said, I have a very general understanding of diesel technology. I don't build them or repair them, I simply drive them.

 

[StarFawkes]

Any updates?