Originally Posted by elhalisf

you and your 2 cents.

with a hand built motor, i would normally agree with the hard break in procedure. one of the theories behind that concept is that the extra pressure in the cylinder will allow the rings to push harder against the cylinder wall. this push is caused by the gap in the piston ring, where the gases are trying to escape from the side.

now, for the evo 8 motor, i can see where hard break in can work. why? because its a standard 2 ring setup up (a third one for oil). so what about the evo 9 motor with the single GAPLESS piston rings????

your motor might run fine now, but you might be having excessive blow by and a lot of oil burning.