|02-28-2009, 07:34 AM||#1|
On the Throttle Stop
Joined: Jul 2003
Location: Pine, Colorado, USA
Colorado XR650R- Jetting Research
I just picked up an immaculate 2000 XR650R. It is fully uncorked and has an FMF Powercore 4 (too loud I know). It runs pretty strong at my house (8,400 ft elevation). But it could run cleaner. SO, I'm looking for data on what you fellas are running for jetting. I'm looking for Coloradans or other folks who live in the "High Country" and run at altitude. If you will, post your jetting on:
Appreciate the help fellas.
Sreaming Eagle Defense- Primary Instructor
WR450 Yamaha, R1150GS, XR650R- Plated and Ready to ROCK!, 1980 TT500- Pated and Ready to Roll!
US Army Airborne, Air Assault
|02-28-2009, 08:30 AM||#2|
Allergic to Asphalt!
Joined: Oct 2004
I run an edelbrock now, but if I remember correctly my set up was:
Elevation: 6000- 12000 ft
Stock Exhaust uncorked
clip at 3rd position from top
So Many Idiots, So Few Comets!!!!!!!!!
|02-28-2009, 12:25 PM||#3|
Wild Feral BRP
Joined: Jul 2007
Location: Los Alamos, Northern NM
Elevation: 7400 ft (Los Alamos)
Bike is uncorked and ride mostly between 7000 - 11000 ft
Needle Position (B53E): 3rd from top
2005 XR650R - plated
2003 KDX220 - plated
2003 KX250 - plated
|02-28-2009, 06:23 PM||#4|
Solo con rambo
Joined: Jul 2006
Location: Huntsville, Al
awesome! This is exactly what I need as I'm about to jet my bike for the same altitude.
|06-17-2009, 02:05 PM||#5|
Joined: May 2008
Location: Superior, CO
What do you Colorado XRR riders with Edelbrocks have for setups?
I'm trying to perfect the tune with my new pumper and would like to know what others use for typical Front Range of CO riding, so from 5,000ft to 12,000ft.
Right now I'm using:
Not sure how many clicks out but around 20 I think (need to go count)
about 4 turns out on the pump screw.
This is running pretty good and starts well. I can do power wheelies in first for sure but when I crack the throttle in 2nd or higher gears the bike stumbles. Plug reading from before some tuning was way rich so I clicked out to the lean side once and got better performance. I would just like the same performance in 2nd or 3rd that I have with first.
|06-17-2010, 04:49 PM||#6|
Joined: Jun 2010
Just curious what you ended up going with. I found this jetting calculator online, did the math, and came up with 165 main, 2nd position on the new needle, 65 pilot. Got a 65S pilot from bike bandit, already had that one in the carb, so I left it. Bike runs strong, but feels maybe lean, pops like crazy on decel. Has all the uncork done and an FMF Q4 silencer, stock otherwise. Any input would be great, thanks.
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