WR250F-lag out, and fork seals. - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 09-26-2007, 02:03 PM
4-STROKES-ROCK
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WR250F-lag out, and fork seals.

what's up

My 05 - gray wire disconnected, air box open, and throttle stop cut, and slide needle adj have been done.

Do I need to change main jet? What size?

In your opinion, what are the best seal savers, and best seals to go with on those pesky forks.

Thanks
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post #2 of (permalink) Old 09-28-2007, 02:14 PM
4-STROKES-ROCK
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Fix the Bog

Installed White Brothers Exhaust, Bam! didn't have to change anything.
What a change in power and sound Rock-0n peace out
post #3 of (permalink) Old 09-30-2007, 01:14 PM
 
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Assuming you have removed the airbox snorkle and fly screen, (and/or cut additional hole(s) in the top of the air box) ... and assuming you are running either the standard pipe with baffle/spark arrestor removed or an aftermarket pipe, (of which most aftermarket pipes are very similar when you are running standard cams, headers and carbs), then you will need to go up one size on both the pilot and main jets.

The stock pilot jet size is a 50; replace it with a 52.5 pilot jet.
NB: Use a Mikuni pilot jet with part number VM28/486.

The stock main jet is 137, replace it with a 140 small round main jet.
NB: You must run a small round main jet as the hex main jets hit the bottom of the bowl. The part number is Mikuni No. N102/221

The best front shock "seal savers" would be a set of rubber "concertina covers" available from most bike shops ... (Measure and compare the top and bottom shock diameter along with the exposed fully extended length before laying out any cash tho'!)
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