Quote:
Originally Posted by utopia
Checking in my manual, I notice that the pistons are marked in the area of the valve cutouts, A for inlet, S for exhaust......but presumably (?) its just a matter of fitting them the right way round for each cylinder, rather than any dimensional difference between front and rear.
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(A = Aspirazione, S = Scarico) but yes they are indeed interchangeable.
On the watercooled engines, not only the pistons but also the cylinders and heads are identical - you just assemble the pulleys etc. on the opposite side and fit blanks on the side you don't use.