I live in COlorado and ride at 8000ft to 9000ft elevation, Stock is 40 pilot, 148 main, I pulled off air box and have FMF gnarly desert pipe and turbine silencer, What Main and Pilot and Needle position do I run for colorado???
Is there a chart or ratio to calculate?
Jetting for Altitude guide???
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Re: Jetting for Altitude guide???
Those don’t seem like stock jet sizes to me. I ride around 6000’ just west of Calgary here and I’m on a 38 pilot with a DEK needle and 148 main. RB modded carb and engine, FMF pipes and no air box lid with vForce3 reeds.
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Re: Jetting for Altitude guide???
For what it is worth, I just ran this weekend at 6500-7300ft. RB carb jetted 148 main, 38pj, CEK-3 (3 = 3rd clip from top). Bike ran good but spooged a bit. Should have probably gone to second clip on the needle.
Best way to get your jetting spot on is to follow the jetting guide found here: viewtopic.php?f=105&t=1156. I would probably start with a 145 main, 38 pilot jet, and a CEK or DEK needle in the 3rd clip and tune from there following the jetting guide.
Best way to get your jetting spot on is to follow the jetting guide found here: viewtopic.php?f=105&t=1156. I would probably start with a 145 main, 38 pilot jet, and a CEK or DEK needle in the 3rd clip and tune from there following the jetting guide.
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Current KDX: '98 KDX220
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AZ State Parks & Trails OHV Ambassador - Trail Riders of Southern AZ
Current KDX: '98 KDX220
Old KDX: '90 KDX200 -White/Blue
'11 GasGas EC250R