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00-01 R1 Mechanical Help Mechanical and Critical Issues for the 00-01 R1

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Old 09-15-2008, 06:53 PM   #1
I eat my R1
Join Date: Aug 2008
Posts: 121
Lean pilot jet?

I have a 2001 r1 w/ a full d&d exhaust and I think it is a little lean at low throttle. When I take off, the engine just doesnt seem to pull like it should untill I get past 1/4 throttle. also if i under rev it it doesnt seem to recover untill I get past 1/4 throttle. it has the stock 15 pilot jets, can I richen this by turning the air screws?(or is it a fuel screw on these) If so what way do i turn them?
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Old 09-17-2008, 03:19 PM   #2
Join Date: Mar 2007
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Part of the problem is the full exhaust, you took out the EXUP valve which is what is needed for low RPM power. It's in need of some good tuning. A number 17 pilot and 132.5 main might be a good start. I would call Ivans for his neddle.

The mixture screw is for fuel. start with it about 3 turns out. Turning in is lean out is rich. Also drop a tooth on the front to help recover from low end bog.
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Old 09-17-2008, 04:18 PM   #3
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Thanks for the info r1slapper. Other than ivans, is there anywhere i can just buy 4 size 17 pilot jets?
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