[Formulajones]

Originally Posted by krisr

Nearly every "melted" turbo LS done on the cheap conversion i've seen melts #7 piston - and yes, steam ports left intact. One of the owners I worked with did it 3 times. Zero issues with tune, heaps of fuel and 10* timing. Apparently not an isolated situation and many others report the same issue with stock bottom end motors.

That's most likely because of the tune. The LS engine, particularly with the passenger car intakes, have a tendency to run the #7 cylinder lean. When I was tuning them it was pretty common to increase injector pulse width for #7 to richen that cylinder a bit.

Just a little tid bit for those closet LS guys I know are lurking here