beaterX project thread

[Shane@DBPerformance]

Did any of the other pistons look all detonation ravaged like #1? Wonder if there was something going on with that injector or just the bad Duluth gas.

Originally Posted by scheides

Just talked to Shawn (simulatedwood) and he's leaning towards TTP's theory where the rings are gapped to tightly from the factory. Running good (high) timing for extended periods causes EGTs to get high and the pistons/rings fully fully expand causing the cyl wear that can be seen on all cylinders.

Higher timing lower EGTs. The scoring on the other cylinder is a little weird. Question is whether the damage was causes by parts from #1 getting into the others, the tight gap theory or something else. Were the spark plugs on the other 3 cylinders eaten up from det or look like something hit them?

[scheides]

Originally Posted by ecoli

Did any of the other pistons look all detonation ravaged like #1? Wonder if there was something going on with that injector or just the bad Duluth gas.



Higher timing lower EGTs. The scoring on the other cylinder is a little weird. Question is whether the damage was causes by parts from #1 getting into the others, the tight gap theory or something else. Were the spark plugs on the other 3 cylinders eaten up from det or look like something hit them?

Yea I'm kinda contemplating getting the injectors flow tested but the rest of the pistons looked fine aside from the scoring and the one rough spot on #4.

All spark plugs looked fine and the other three combustion chambers on the head look great. I'll take closer pics when I dissassemble the sensors/tstat housing/exhaust manifold off of the head; it's obviously going to have to get looked at.

[TalonFiero]

Finally, this thread is a proper project thread now!

Good work Scheides and Kody. I'll be there to help you put it back together.