FCR 35 Jetting Information
Oct 11, 2003 | 12:44 AM
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Trailblazer
Joined: Jan 2003
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FCR 35 Jetting Information
Just an FYI
For those who have FCR carbs, I just jetted my Raptor with my EGT sensor to the following specs:
Main Jets: 150 /152
Needle: 5th clip from Top (James Dean Red Needle)
Pilot: 58 with fuel screw 2.5 turns out
My Raptor is stock except for a Yoshimura pipe and an aluminum airbox with a foam filter, and my altitude is 4500 ft above sea level, and the temp is roughly 70 degrees. When I performed a plug check at the end of my ride, my plug was chocolate brown, and it pulls like a monster at all throttle ranges. My maximum exhaust temp at idle was 1160, 1280 at mid-throttle - and 1375 at WOT.
For those who have FCR carbs, I just jetted my Raptor with my EGT sensor to the following specs:
Main Jets: 150 /152
Needle: 5th clip from Top (James Dean Red Needle)
Pilot: 58 with fuel screw 2.5 turns out
My Raptor is stock except for a Yoshimura pipe and an aluminum airbox with a foam filter, and my altitude is 4500 ft above sea level, and the temp is roughly 70 degrees. When I performed a plug check at the end of my ride, my plug was chocolate brown, and it pulls like a monster at all throttle ranges. My maximum exhaust temp at idle was 1160, 1280 at mid-throttle - and 1375 at WOT.
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