YZ400EX
09-21-2007, 11:43 PM
Ok so I have a spare 300ex cylinder with an 80mm bore/sleeve. I know it takes a 80mm piston, but what is this over stock like .20, .40, .60 etc. Just trying to figure out the specs over stock this piston is. Anyone know?
Also another question about the cylinder. I have been reading that the cases need to be machined for this to fit.. anyone know on this?? anyone know if this could be a stock cylinder bored or is the 80mm over the stock 74mm too much of a bore?? I am wondering because I dont want to have the cases machined for this to fit..Anyone have any answers on this.. Thanks in advance!
Also another question about the cylinder. I have been reading that the cases need to be machined for this to fit.. anyone know on this?? anyone know if this could be a stock cylinder bored or is the 80mm over the stock 74mm too much of a bore?? I am wondering because I dont want to have the cases machined for this to fit..Anyone have any answers on this.. Thanks in advance!