bought a 99 400 timing ????

3 replies to this topic
  • cumminsgetsome

Posted September 11, 2006 - 05:46 PM


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

  • cumminsgetsome

Posted September 12, 2006 - 05:16 AM


Does anyone know if the part number is marked on the cam???

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  • bluebike1999

Posted September 12, 2006 - 09:20 PM



5BF-12170-10-00 426 wr

5BE-12170-10-00 yz 426

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

  • cumminsgetsome

Posted September 13, 2006 - 04:09 AM


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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