big turbo stock block thread

[dooderek]

@dturboman spill the beans

[dturboman]

Originally Posted by Daddy Chinkus @dturboman spill the beans

the engine let go last night while driving on the turnpike... no hole on block but bent a rod

[Lex]

Originally Posted by dturboman the engine let go last night while driving on the turnpike... no hole on block but bent a rod

It was just a matter of time at those boost and power levels.

[dturboman]

Originally Posted by Lex It was just a matter of time at those boost and power levels.

was not even in power when it happen, was doing 50 through a construction zone and it let go.

Looks like its going to be built now.

[86AmishMs3]

Sad to see it give....you pushed that little 3071 hard. Any thing seem off before it went.

[dturboman]

Originally Posted by 86azms3 Sad to see it give....you pushed that little 3071 hard. Any thing seem off before it went.

I had the AP hooked up a few minutes before it happened, and I was seeing more than usual PT knock, but it would just come and go as if the engine was maximizing fuel mileage, few minutes later it jerked hard and the clutch pedal was vibrating hard.

so it looks like there was no way to prevent it... it was just its time.

[86AmishMs3]

Originally Posted by dturboman I had the AP hooked up a few minutes before it happened, and I was seeing more than usual PT knock, but it would just come and go as if the engine was maximizing fuel mileage, few minutes later it jerked hard and the clutch pedal was vibrating hard. so it looks like there was no way to prevent it... it was just its time.

Gay..it went out like a little bitch. Wot always...have you learned nothing...Jk can't wait to see you back up again

[Lex]

Originally Posted by dturboman I had the AP hooked up a few minutes before it happened, and I was seeing more than usual PT knock, but it would just come and go as if the engine was maximizing fuel mileage, few minutes later it jerked hard and the clutch pedal was vibrating hard. so it looks like there was no way to prevent it... it was just its time.

Stress over time on the rods weakens and they slowly deform. I don't want to bring back the S/N curve for metals but while there are some cars running around at 400+whp and especially high low end torque with a stock bottom end IMO even with the best tune you're on borrowed time. We've seen this time and again. That's not unreasonable given that's almost double factory rated hp and @dturboman here was running more than that.

GL with the build

[dturboman]

Originally Posted by Daddy Chinkus @dturboman spill the beans

Well here are the specs when it was running

Gt3071r with back half ported and coated.
22.5* max timing
625ML & 375ML nozzle running 100% meth
c16/93 mix
31-32.5PSI
518 whp 497tq

ran 11.9@ 123.4 on 26psi and 450whp