Originally posted by nitrodude
I thought the idea was to recreate the up and down motion from a running engine by hand, with a little lapping compound. Therefore laping the piston to the shape of the sleeve and making a perfect seal.
Hi Steeve.
Piston and sleeve have their own geometry and you don't want to have tapering on piston the same as on sleeve.
Tapering on sleeve is done to compensate thermoexpention and tapering on piston is done to remove extra friction-so they are totaly diffeent.