Posted January 18, 2005 - 03:43 PM
I will be riding my bike in Colorado at altitudes mostly between 6,000 and 9,000 feet, with occasional rides up to 12,000 feet. I also take the bike to Moab once a year.
Would any Colorado riders care to tell me their jetting and other setup to get me started?
How sensitive is the WR to altitude changes? I jetted my XR for about 7,000 feet and I could ride it anywhere from 4,000 to 12,000 feet (which means that it had no power at any elevation :-). Will the Yamaha be as accommodating, or will it require rejetting for trips to Moab?
Thanks for your tips.
Posted January 18, 2005 - 04:00 PM
The stock muffler with the insert will test in the area of 92 DB. If you remove the baffle it won't pass. You can try a different insert and it will be close but should pass. I have heard good things about the GYT. I have a FMF Q that passes the 500 sound test.
FWIW I have not noticed the bike being that sensitive to altitude changes.
Posted January 18, 2005 - 05:59 PM
I ride in Colorado a lot and didn't realize they had sound restrictions. Does one need some sort of ORV sticker or plate in that state? What are the implications of riding with the exhaust restrictor removed? Will a cop/ranger pull you down and break out a DB meter?
Posted January 18, 2005 - 06:21 PM
To ride on the public lands in Colorado your suppose to have a Off Road Vehicle permit from Colorado or your state. Or you need to have a license plate for your bike.
Posted April 10, 2005 - 08:27 AM
I have no idea what the jetting is, but my guess is that it's stock. Like I said, it ran great last year between 5k and 12k feet. Now it runs like shit, ever since the mud fiasco. Is it dirt in the carb? Do I need to re-jet? I have never pulled the carb off and attempted this, but maybe it's time. What's the best main jet & pilot jet combo to use in Colorado (5200' to 12k')? I want something that will work well just about everywhere, so I don't have to mess with changing jets or turning screws when I ride at higher altitudes.