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jmc400ex02
03-12-2005, 06:06 PM
Just purchased this quad from a guy. He wasnt sure if it had engine mods done or not. How can i find out if it has a different bore size than stock?
nosliw
03-12-2005, 07:14 PM
you'd have to take the engine apart and look for yourself.
crazyelece
03-12-2005, 07:26 PM
You'd have to take the top end apart and measure the inside diameter of the cylinder with a caliper and then match that to the stock size.
Cody_300ex
03-12-2005, 10:14 PM
If there is a aftermarket piston in it all you have to do is pull the head off, write down the serial number then run it. On a weisco the last 2 or 3 numbers is the size in mm. For Example: ABCD-EFG-HIJKL-745 = A 74.5 mm piston.:cool: