Operation CHARM: Car repair manuals for everyone.

Piston: Description and Operation


Pistons

the pistons are of aluminum construction with a grafal coating applied to the skirt to reduce noise, friction, and scuffing.

the MINI COOPER pistons have flat tops. the MINI COOPER S has a concave piston top with a volume of 1.66cc to reduce the compression ratio.

Note on piston coating.

Piston Coating: