Jetting causing overheating?? Please help!
Posted July 16, 2002 - 05:29 PM
178 main jet
48 pilot jet
100 pilot air jet
200 main air jet
82 starter jet
1.5 turns out
Any suggestions would be greatly appreciated. Their is nothing worse than an overheating bike and friends who don't want to wait for it to cool down. Thanks, Eric
Posted July 17, 2002 - 07:25 AM
Additionally your main and your starter jet are way too big....But that's not causing your heating problem....The stumbling is most likely caused by the needle being on wrong clip. Put it on the 3rd clip (from the top)....That should clear that up. If your still getting decelleration popping open the Fuel Screw to 2 turns....
[ July 17, 2002: Message edited by: YAMAKAZE ]
Posted July 17, 2002 - 08:31 AM
[ July 17, 2002: Message edited by: Blue Boner ]
Posted July 17, 2002 - 12:14 PM
Posted July 17, 2002 - 12:29 PM
You have a rich pilot and main that is compensating for a lean needle setting. At mid throttle settings you are probably pretty lean. The D_R needles come on WR's, but when you change to YZ timing you should consider changing the needle to something like an E_N.
My "WR with YZ timing, Powerbomb SX, WB Hawkins, grey wire and no airbox lid" jetting spec:
Posted July 17, 2002 - 01:12 PM
Posted July 17, 2002 - 01:31 PM
Another question I have is, do jetting specs from a 2000 and up carb also work on a 98 or 99 model even though they have different carb bodies?
Trick Daddy, you couldn't be further from the truth. A rich engine runs cooler than a lean engine because it has excess fuel to cool it.
Yamakaze- check your PM's
SoCal- I rode last Saturday out of Lake Arrowhead and was almost struck by lightning then got right back into the heat. Then on Sunday rode out of Big Bear. About buying your bike, I know its nice but it's not Orange and doesn't have a 520 in it.
Thanks again for any suggestions, Eric
[ July 18, 2002: Message edited by: Blue Boner ]