blacknblue#2
03-22-2010, 09:53 AM
Hey guys. Im workin on an 87 250X that im fixing up. I tore it apart to give it a top end rebuild and found an aftermarket piston of some sort. Its stamped 1.0 on the top so im guessing its bored .040 over. The only other thing stamped on the piston is the number 4440P4. it has no kind of name what so ever stamped in it. It also has a huge dome on it for such a small piston. Im unable to get pics at the moment but i can later if someone needs them. But for you guys who have built quite a few of these engines maybe hopefully you can tell me what kinda piston i got so i can get rings for it. Thanks