NE1 use the pipe from a YZ on the WR?
Posted April 29, 2003 - 11:51 AM
Posted April 29, 2003 - 12:05 PM
Posted May 04, 2003 - 02:52 PM
Posted June 05, 2004 - 04:42 PM
Posted June 06, 2004 - 01:34 AM
Im forgot what is the numbers on the needle though.... But you can check yamaha-motor.com (look under parts)
Posted June 06, 2004 - 04:48 AM
Watch out! The YZ silencer with PMB and quiet insert won't pass sound check. It does run great though.
Just out of curiousity what did it test at?
Posted June 06, 2004 - 08:48 AM
I did need to widen the plastic slot 1/4" where the rearmost mounting tab (on the can) passes through the fender.The YZ can has a thick (3/4"-7/8") rubber isolator where the WR part is just flat. You can't see this with the side panel on though. I had to use a longer M8 X 40mm bolt to replace the original rear WR bolt.
Power seems up only slightly because I was running the WR pipe unbaffeled with no insert. The two pipes sound similar but the YZ pipe seems slightly louder at 1/2 to WFO and the tone has deepened a little.
The YZ pipe weight did seem to be about half as much as the WR pipe. The headpipes appear identical and are listed as the same piece on the 03 YZ/WR Tech CD.