Will YZ450 03 Cams fit in 01 WR426
Posted February 27, 2007 - 01:01 AM
YZ450 03 - 05 intake = 8.9mm lift and 269 deg duration
WR426 01 - 02 intake = 9mm lift and 265 deg duration
YZ450 03 - 05 exhasut = 8.7mm lift and 269 deg duration
WR426 01 - 02 exhaust = 9mm lift and 265 deg duration
So can I replace just the Exhaust Cam to get auto decomp or should I replace both intake and exhaust cams so they match.
Posted February 27, 2007 - 01:37 AM
Posted February 27, 2007 - 02:03 AM
Looks like both will be the go.
Posted February 27, 2007 - 11:20 AM
Posted February 27, 2007 - 02:19 PM
That’s what I read too so I only replaced the ex cam on my 02. From what I understand the yz exhaust and wr intake cams complement each other by smoothing out the midrange hit the 01-02 are known for and pull harder on the top end. Here are a couple of links that might help.
just go for the EX cam.