Good deal on 300 piston
- Thread starter Stoby
- Start date
GMP
Active member
You can get away with a B,C in an A cyl with a cast piston, I have done it many times and don't even think about it, my 250 has a B Vertex in its A cyl now coming up on 75 hrs. and still in good shape. I have also done a B Wiseco in an A cyl. Any more than that and I'd measure both with GOOD instruments to be sure, but likely your still in spec. The difference in size is so small (+.01mm per letter increment) that the error in measurement with less than perfect tools and methods is larger.
Forged pistons generally spec more clearance than cast due to the higher expansion coefficients. Theoretically, forged is less likely to fatigue, but I have had excellent results with Vertex for years now with a 75 - 100 hr service interval.
Forged pistons generally spec more clearance than cast due to the higher expansion coefficients. Theoretically, forged is less likely to fatigue, but I have had excellent results with Vertex for years now with a 75 - 100 hr service interval.
Stoby
Bronze Level Site Supporter
I just got my wossner today.if you want a wossner,i got a decent deal $150 to my door from racepartsplus ebay.I like the coating on the wossner.Funny when i took my jug off it had a wiseco 71.97 in it.... My nikasil is gone though. Its an 01 so no surprise Sending jug w/piston to powerseal tomorrow after i clean it up a little.
another funny thing is i dont mind a cast piston esp. in a big engine since theyre usually lighter(rev easier) and not pounded as hard as a small cc bike. but The ones i found were more than forgings??????
another funny thing is i dont mind a cast piston esp. in a big engine since theyre usually lighter(rev easier) and not pounded as hard as a small cc bike. but The ones i found were more than forgings??????
