Need to find Ways to OPEN up my '02 WR426F - Please Help?!?
Posted June 19, 2006 - 06:59 AM
I have a near MINT / Stock 02 WR426F. It has had nothing done to it... Stock everything including bars... Just put a Baja Designs QR kit on it, changed front sprocket to 15 tooth, new DOT approved MX tires and street legalled it. I would like - No Love to get more out of it and every site or person I talk to says you gotta uncork it!!! I know that there are tons of guys that have done it, but I was just wondering what is the best way!??
Posted June 19, 2006 - 07:14 AM
Free Performance Mods you can do for a WR426:
cut throttle stop
remove airbox lid
uncork the exhaust
unplug the grey wire
proper jetting (the best mod IMO)
It seems like I'm missing something
Do a search here on Thumper Talk for any of these mods to find out how to do them and if you can't find anything, ask away, one of us will guide you.
Here is a link that should provide some additional info.
Posted June 19, 2006 - 08:09 PM
Uncork the exhaust...is removing the baffle in the end. You might want to pick up a GRT-R Quiet Insert to replace it. Quiets it back down a little.
Gray wire refers to disconnecting the gray wire in the 6 pin connector under the gas tank on the right hand side. Remaps the ignition to YZ spec. Be sure to seal up the hole in the connector so things don't corrode.
YZ Time refers to setting the exhaust cam timing to YZ soec instead of WR spec. Gives a much bigger mid-range hit and revs out better. You might also concider installing an 03 YZ autodecompression cam. Gets rid of the compression release and makes starting a whole lot easier. See the sticky on the YZ thread.
You might also concider adding a stock YZ pipe as a cheap way to boost power. Yo can find 'em on e-bay for about 30 bucks. Revs better, and is a whole lot lighter, too!
Posted June 20, 2006 - 04:53 AM
Posted June 20, 2006 - 06:18 AM
Posted June 20, 2006 - 06:32 AM
Posted June 20, 2006 - 08:13 AM
Posted June 23, 2006 - 05:13 AM
Sorry had to fix the link
Posted June 23, 2006 - 04:08 PM
I mix 40% 100 LL(low lead) aviation gas with 60% 91 pump gas to avoid pinging and for excellent torque, response and tractability, with some Lucas upper cylinder lubricant.