Something broke @ 18psi... lets have a contest!

[90T04]

So heres how we play. I will tell you what happened, and describe the symptoms, and you guess what broke while I go tear it down and find out what happened.

Winner of the contest will receive mad props.

Engine is internally stock 102,000 miles. T04B turbo, Ron R FFIM, with supporting fuel mods, stock ECU with MAFT-Pro, ETC.

Okay, so last night at about 2:30 am I pull onto the freeway on ramp in 1st gear and stay in it all the way to redline, go to power shift into second but I miss it and bounce it off the rev limiter about 4 times. At this point I hear a metallic clank, and then what sounds like pices hitting the underside of the car and falling onto the road behind me. Instantly there is a nasty vibration related to engine RPM and I pull over and turn the engine off.

Get out, check the obvious with my cel phone for a light, fan is good, pulleys are good, belts all on, no oil spilling out on the ground. Get back in the car and start it up. Runs normally, no more noise or anything abnormal except for the vibration, which starts at about 1500 rpm and gets worse as RPM's rise. Drive home about 20 miles without incident.

 

[IJ.]

Clutch

 

[NeatOman]

The lazy midget died inside the engine... so now it doesn't run right. Or the bolt for the crank pulley?

 

[Doward]

Flywheel/Pressure plate.

 

[BlackMKIII]

90w ball bearing gave up. :rofl:

Input shaft.

 

[90T04]

You guys are too smart. But your only half right! There is something else broken too! (as a result of the carnage).

The bellhousing! Freakin' spec clutch. :nono:

 

[BlackMKIII]

WOW.

 

[Doward]

Please send all 'mad props' via paypal, plz.

 

[IJ.]

As I said "clutch"

 

[87mgte]

The bellhousing! Freakin' spec clutch. :nono:[/QUOTE]

shit, remind me never to hit the limiter on a semi-stock 7m

 

[Mr.PFloyd]

hmm, i think you should call up spec about this b.

 

[90T04]

As I said "clutch"

Yes I do believe we have a winner:

IJ, here are your:

And coming in a close second is Doward,

you can have one too

 

[90T04]

hmm, i think you should call up spec about this b.

Yea I was planning on doing that. Its over a year old, but it has less than 10,000 miles on it.

 

[spoolint78]

so what was the exact cause of that?
what actually came loose?

pressure plate bolts? or that metal strap on the pressure plate?

 

[Doward]

lmao

ANGRY PROPS

 

[90T04]

so what was the exact cause of that?
what actually came loose?

pressure plate bolts? or that metal strap on the pressure plate?

looks like it was the pin that broke first, the one that goes through the face of the pressure plate and the "metal strap" from the severe impact of engagement at 6500RPM. That caused the strap, (or spring, or whatever its called) to swing out and impact that edge of the bellhousing at over 100 times per second until it broke off completely.

Funny thing is that there are only 3 of those "spring" pieces holding the pressure plate face to the cover. It still operates with 2 in place, but im sure it would slip under increased torque.

Edit:

Number 5: "Drive straps"

 

[j3pz]

that is insane, it eat right through the bellhousing

 

[Figit090]

yikes.


so that's what the check plate on the r154 looks like...i was wondering....

so new bell housing or leave it?

i feel kinda good i was going to guess clutch as well...

 

[gilberjj]

yikes is right. that sucks!

 

[90T04]

so new bell housing or leave it?

I think it'll be okay