my bad.... I only checked the YZ specs...Originally posted by BigAl@Jan 21 2004, 07:33 PM
Actually the stroke is not the same. The YFZ crank as a 2mm(?) shorter stroke than the YZ or WR.
The bore is the same.
The YZ crank is supposed to be drop in fit, and allows you to be a full 450cc.
:stupid I heard the same thing and I agree not a good idea. :nonoI understand that the wrist pin size on the WR crank is smaller than the YFZ. So if you use this crank you have to use a WR or YZ piston with the smaller wrist pin.
Maybe not a good idea.
that is what i've been told. i thought about doing the same thing until i was told this.Originally posted by Pahrump@Jan 23 2004, 11:38 AM
The reason for Yamaha beefing up this area in the quad is because of the extra hook the quad gets therefor putting more stress on the crank and pin area on the piston.