New 03 Wr450 owner Questions
Posted August 19, 2003 - 06:53 PM
You guys are a big help!!!
:busted:01 WR 250F (FOR SALE) Free mods, 03 cam (great!!), stock timing, stock exhaust, yz rear fender, ufo all blue plastic, pirrelli gar-cross rear tire, dunlop 739 front, ironman sprokets, did x-ring, homemade aluminum skidplate,BBR kick starter (like new), ims tank, sdg seat, twin air filter, enduro enginnering handgurads, seal savers, Fresh rebuilt motor!!!!
74’ XL250 (me and dads)
82 ‘XC430 Husky being restored
82’ WR250 Husky (dads trail bike)
01’ TTR125L (Brothers ride)
4 stroke B Mid-South Hare Scrambles
4 Stroke C GNCC
Posted August 20, 2003 - 04:30 AM
Regarding the jetting, the guys will need to know where you're located and what elevation you normally ride. The WR450's have all come from the factory way too lean and rejetting is usually a must. You'll need to also verify what it's currently jetted at to see if the previous owner already jetted it for you.
There are plenty of pictures of the airbox mod out there. There are a few (slightly blurry) photos here: Airbox Mod and I have some better ones I could email you later.
I'm using the DH1 clamps that came with my GPR 2.0 dampner. It had the adapter to mount the WR wiring panel. It wasn't a perfect fit but it worked out. You can see photos here:DH1 clamp and GPR 2.0
Posted August 20, 2003 - 07:53 AM
As far as jetting goes, my bike runs the best with stock jetting, I'm at sea level.
Posted August 20, 2003 - 03:50 PM
I put a 162 MJ and a 48 PJ in and it works great after pulling the snorkel out and the rest of the free mods, no glitches anywhere in the carburetion.I didn't have to touch the needle, and I did install a Zip Ty fuel screw for my convenience. The stocker is a PITA to get at with the starter right there....
It's easy to pull the snorkel; unstrap the battery and flip it over out of the way, slip a couple screwdrivers between the snorkel and airbox to pry the batt. strap clip back and lift the snorkel out....
Posted October 26, 2005 - 09:37 PM
Posted October 27, 2005 - 11:33 AM
One thing that I strongly recommend that you modify on your bike is the Starter Idler Gear. This gear was the cause of the infamous problem of the fly wheel coming loose on the 2003 WR450F. Update to the Idler Gear from the 2004 or later WR450F. Some folks have been lucky and never had a problem, but most people ended up spinning the fly wheels. The Loctite fix recommended from Yamaha DID NOT FIX the problem, it only created more problems. Instead of spinning the fly wheel, starters and cases began to break. The replacement parts are a little expensive $250-300--- work a deal with your Yamaha dealer, they know the bike had a design problem. The alternative is the STRONG possibility that you will have to push your bike back to the truck at the most inopportune time.
I have a GPR 2.0 Stabilizer (handle bar fits over the top of the stabilizer) and an Applied triple clamp for fat bars (had Renthals on the bike) from that 2003 WR450F that you should consider buying from me. GPR Stabilizers are great. Good company to work with and they provide free life time maintenance service on their product. Long deal $550--- let me know and we'll talk.
Posted October 27, 2005 - 11:42 AM
Posted October 27, 2005 - 12:24 PM
Posted October 27, 2005 - 12:34 PM
Posted October 27, 2005 - 01:24 PM
Posted October 27, 2005 - 02:59 PM