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cumminsgetsome

bought a 99 400 timing ????

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I just bought a wr 400 doing some mods. The guy I got it from said that the person he got it from had put in 426 cams. Which I think would be the same is this correct. How would I tell if it has a yz cam in it instead of the wr cam. I want to the cam timing mod but not sure how to tell if the cam had been changed?? thanks

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cumminsgetsome

CAMSHAFT ASSY 1 (5NG1)

5BF-12170-10-00 426 wr

CAMSHAFT ASSY 1 (5JG5)

5BE-12170-10-00 yz 426

CAMSHAFT ASSY 1

5BF-12170-01-00 400(replaces 5BF-12170-00-00) 400

again, not conclusive, but my bet is there is no difference between them.

the -01-00 and the 10-00 difference , (i believe) indicates either an update to newer model.

i also believe that from the 98 -2001 wr had same cam, just different timing.

could be wrong

sorry this is not enough to make a decision on, but i'm trying to come to grips with this system as well.

good luck

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Thanks BlueBike

I pulled the valve cover and there is 12 pins between the dots on the cam gears so from what I have found I have yz cams in this bike? I could not find a part number anywhere on the cams but I did not pull them all the way out either so it could be on the back of the gear.

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