NEW Jetting Stuff
Posted June 06, 2003 - 08:43 PM
Posted June 06, 2003 - 08:51 PM
Posted June 07, 2003 - 07:16 PM
Posted June 08, 2003 - 05:31 AM
Posted June 08, 2003 - 08:58 AM
Has any one had the leak jet mod done???????? And if so whats your story....
Posted June 09, 2003 - 06:59 AM
Posted June 09, 2003 - 07:55 AM
Posted June 10, 2003 - 03:08 AM
Then again I may be barking up the wrong tree...its been a while since I last logged on....
Posted June 10, 2003 - 06:07 AM
I don't think the YZ 450 has a leak jet either. What's the purpose of the leak jet?
The leak jet meters the amount of fuel delivered by the accelerator pump. I can't find one on the YZ 450 fiche, and I can't find a WR 450 fiche at all.
In the past, aside from actual jets installed, the WR/YZ carbs have been identical internally, so I'm surprised this no longer appears to be the case.
Posted June 10, 2003 - 08:46 AM
you can install a yz screw or just cut off 11mm from your screw, same diff. This will make a huge difference. Enjoy.
Posted June 10, 2003 - 12:12 PM
Posted June 10, 2003 - 07:15 PM
Main jet=160 "factory was 155"
Pilot jet=48 "factory was 45"
Starter jet=68 "factory"
Pilot air jet=70 "factory"
Leak jet=70 "factory"
Jet needle= #4 position “factory”
Factory pipe with the promoto insert “96db”
Adjustable fuel screw TIE “2.5 turns out”
Power Now carb insert
Gray wire mod
Throttle stop STILL Factory “I’ll get to it!”
Riding around 2500 ft
Yes, its true the YZ does NOT have a Leak Jet.
Yamaha web site has fish tape on all the bikes except the WR ??????? I have not found any site that has it. I think Yamaha has not published it yet.
To the picks www.volcano.net/~simmons/yamaha450/
Thanks Hick, Lowedog and Millertime for the factual information.
Posted June 11, 2003 - 10:11 AM