Originally posted by Travis: If you never take the engine over 5k or so for 70000 miles the piston only goes up the bore so far and wears a path for the piston to follow. Then you slap it in a manual car and run it to 7000 and suddenly the piston goes quickly from this wide piston bore to the stock size because of rod stretch.
You actually think the piston dosent go up the bore all the way at lower RPM.
