Originally Posted by
Roelof
It is wrong to think you must not feel any pinch in cold condition. The right fit of the piston and sleeve is needed at operating temperature and due expansion of both parts that will be different compared to room temperature.
Well I thought I should feel a slight pinch. but one guy on the track showed me his engine (newly broken in) when turning the flywheel (cold) i could feel a somewhat strong compression, without any
metal parts touching.
so i was a lil confused. Im always confused
One other thing, Is it normal to see fine scratches on the piston?