I may have some info regarding my new dirt bike engine rebuild that might shed some light on this subject......While putting in a new piston/rings in my 4-stroke dirt bike,some guys on a motocross forum swore by the "dry method" of breaking in new engines. This is were the put in a new piston/rings without any oil except for on the wrist pin. They just put the piston with the rings on it into the cylinder with no lubrication at all. They also drain out the engine oil from the engine so that when the cranked the engine over at first,no oil would lubricate the cylinder. Once they put everything together with no oil,they would crank the engine over 40-50 times with no lubrication. Then they would add oil to the engine,start in up for a few minutes to get it good and hot(a "heat" cycle they called it),let it cool all the way....change the oil and WALLA,the engine was ready to go beat the crap out of. Some people claim this seats the rings to the cylinder better then the old fashion way,thus making in perform better.

Although this info pertains to 4-stroke dirt bike engines,I'd bet the guys you read this from are thinking the same rules apply to our 2-stroke model engines. This "DRY METHOD" I just told you about sounds just like what you discribed.


I dont know what to think about any of it,but its something to think about anyway.