KX Guru Racing

Glad you made this post so I could confirm what I'm finding....

2001 stock motor
Rad Valve and reed spacer
RM250 short body air striker with Boyesen power wing
1200-1500 ft
110 vp/93 premium-no ethanol
50:1 K2 Maxima

stock needle #2 clip #7 slide
160 main
started with a 52 pilot but could tell in ...

http://i183.photobucket.com/albums/x249/moto2000yzf/101_0041_zpsor3kv4z1.jpg

http://i183.photobucket.com/albums/x249/moto2000yzf/101_0038_zpsm3t0fyav.jpg


The carb fits fine, other than the cap hitting the inside of the tank on the left side.

The welch plug area will need to be removed and ...

Have you tried test fitting this carb? If you have not, you'll eventually find an interference issue with the tank and the carb cap.

Shouldn't be a huge deal to modify the cap since the tps is removed from the carb. I'm hoping that's all that's needed.

Good info....I have to remind myself, what works in a 250/300 doesn't necessarily work in a 500. I've got a #6 slide kicking around somewhere.

Too many variables, not enough time!

Good info....I have to remind myself, what works in a 250/300 doesn't necessarily work in a 500. I've got a #6 slide kicking around somewhere.

Too many variables, not enough time!

Thanks for the info.

Do you know the difference between the N89D needle you used and the stock N82M needle?

Once it stops raining and snowing around here, I plan to get some actual time on the bike and figure out the jetting with the stock carb. Once I get a baseline and a good feel for it, I try ...

Thanks for the info.

Do you know the difference between the N89D needle you used and the stock N82M needle?

Once it stops raining and snowing around here, I plan to get some actual time on the bike and figure out the jetting with the stock carb. Once I get a baseline and a good feel for it, I try ...

5.5 is as heavy as you'll find in a Yamaha Ti spring.....you may have to search for a RCS spring.

5.5 is as heavy as you'll find in a Yamaha Ti spring.....you may have to search for a RCS spring.

Two things to keep in mind....

First, the easiest way to verify the spring rate is by the color code on the bottom of the spring. 5.5 is pink 5.3 is yellow Don't know the rest, but it's a KYB thing whether steel or ti and you'll want to verify it before laying out the cash.

Second, you'll notice a ...