Quote:
Originally Posted by Hanno Spoelstra
What’s the advantage of alloy pistons? Lighter weight so higher revs, eh?
Were these an aftermarket item, or were they factory fitted in some cases?
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These are Aftermarket Hanno . Yes, less mass moving up/down = less force on the rod bearings and longer life , and higher revs are possible but I would not like to test that theory myself. I think they are about 25% lighter than the iron pistons. The CMPs had the heavier iron alloy pistons fitted at the factory.
The iron pistons , I've heard the top section can fatigue and break off
One advantage of the iron pistons is, the top ring groove doesn't wear like the alloy pistons suffer from.