YFZ450 big bore ?
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04-28-2006, 04:48 PM
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YFZ450 big bore ?
My goal is to bump this thing just over 50hp, its running 47hp right now at 439cc. (04 YFZ) So if it will make the same hp per cc at 478cc I will be around 51hp to 52hp.
Is that usually the case or should it make more or less hp per cc at a larger bore?
Also i forgot, im running a 13.5/1 compression piston right now. The big bore kit comes with a 12/1 compression piston. So is it going to be an almost even trade by decreasing the compression and increasing the displacement? Or should it still make more power even though its less compression?
Is that usually the case or should it make more or less hp per cc at a larger bore?
Also i forgot, im running a 13.5/1 compression piston right now. The big bore kit comes with a 12/1 compression piston. So is it going to be an almost even trade by decreasing the compression and increasing the displacement? Or should it still make more power even though its less compression?
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