Need some clarification on timing\cam
Posted February 13, 2006 - 11:03 PM
Am I correct that there are 4 cam\timing combinations:
wr timing\wr exh-cam (stock),
yz timing\wr exh-cam (stock),
yz timing\yz exh-cam.
Or does the YZ cam automatically advance the wr timing to yz spec?
Posted February 13, 2006 - 11:51 PM
Posted February 14, 2006 - 07:22 PM
Posted February 14, 2006 - 08:13 PM
It's stock now but I'm going to order a auto decompression exhaust cam in the next couple days. Just trying to figure out if i'm gonna go with a WR or YZ cam and how i'm going to time it. I'm hedging towards the WR cam and YZ timing.
No,you can't do that with the automatic decompression cams. You MUST buy the YZ auto decomp cam if you want YZ timing. IF you want WR timing you have to buy the WR auto decomp cam if you want WR cam timing. The pre 2003 bikes were able to be advanced or retarded to get the desired timing be cause they did not have auto decomp. If you try to advance a WR Auto decomp cam to get YZ timing your auto decomp will not work properly because the timing of the decompression pin will be off. I hope this makes sense.
Bottom line, if you want YZ timing with Auto decomp buy the 2003 YZ cam. If you want WR timing with atuo decomp then buy the 2003 WR cam.