13-10-2013, 05:58 PM
Hadn't noticed they were 16v pistons...
That won't have helped at a guess...
That won't have helped at a guess...
Quote:The piston near the perimeter will typically have that kind of look if detonation occurs. It is a swiss-cheesy look on a microscopic basis. The detonation, the mechanical pounding, actually mechanically erodes or fatigues material out of the piston. You can typically expect to see that sanded look in the part of the chamber most distant from the spark plug
