Jetting Database

For informational and sometimes useful purposes, a jetting database would be good.

2005 XR650R
Stock Carb
Elevation: 7000 - 11000 ft
165 Main, 68 pilot, clip at 3rd position from top

Here's what I run:

2002 XR650R...Uncorked
Stock Carb
Elevation: 400 ft
172 Main during summer months (70 - 95 avg temps)
175 Main during colder months (40 - 50 avg temps)
68s pilot
Clip at 3rd position from top

05 with PC headers and muffler,Hot Cam 2,mild porting and valve work,vented side panel,11.5 coated Wiseco piston,Precision Concepts airbox insert. For jetting I use 68s pilot,HRC kit needle in middle for Baja and second for Idaho,175 main for Baja,172 for 5-6 thousand feet elevation in Idaho. Mung

Mung your thing should go allright.
Tell us about the batwing dude.
In the review section maybe.
TM 40-very sensitive to height and humidity
actually the toughest carb to jet i've ever had
but well worth it once sorted.
PILOT 30,3 1/2 out mostly.
AIR JET,1.1
y-4,NEEDLE JET'
90JY-1 NOT SURE WHAT CLIP
MAIN JET,140
PUMPER NOZZLE #50 COMES ON EARLY
Totally uncorked plus
Twin Air powerfilter.

The best jetting guide is Borynacks jetting guide on his site. It tells how go to jet for what mods you have done. I've jetted my pig accordingly, and it runs great. Over 2000' it runs a little rich, and over 5000' it runs really rich, and dies sometimes. I usually ride pretty low, and in the desert it pulls away from just about anything else out there.

The most trouble I've had is getting the air/fuel mixture screw right. Other than that, Borynacks guide has been great.

2000 xr650R

elevation 150-1000ft.
stock carb
175 main
68s pilot
clip 3rd from top