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A couple of things-
When I was contemplating getting the S Cayman, the scored piston thing raised its ugly head. ((EXPENSIVE))
With the S engine, afai understand, when the skirt of the forged piston drops below the liner, it whacks it pretty hard on the return.
The non-S engine gets away with it as the pistons are softer.
All the bore score starts at the bottom.
The low viscosity oils do not help.
Also, most engines nowadays are some version of an automatic transmission, so the borescore average gets skewed .
Its not the transmission.
Its bad engineering.
Of course, Porsche has never done that B4.....
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162 Assault Helicopter Co,(Vultures ) D troop 3/5 Air Cav. ( Bastard CAV) South of Saigon, U Minh Forest, Delta, and most parts in between.
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