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Buell Forum » Old School Buell » Archives OSB 001 » Archive through July 14, 2007 » Jet sizing for my Cyclone « Previous Next »

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Crashbuell
Posted on Sunday, July 01, 2007 - 01:58 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Just curious, does anyone know the stock jet and needle sizing (keihin) for the cyclones, lightnings, etc? Are they the universal for all early tubers? I had the Harley shop jet my bike a few years back and I was thinking someday that I would want to return it to stock config.
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Onahog
Posted on Sunday, July 01, 2007 - 02:37 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Check yer service manual!
Im thinkin a 190 main, 45 slow..Hb
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Jackbequick
Posted on Sunday, July 01, 2007 - 07:52 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

45 and 190 sounds right.

Going to a 48 on the slow speed, uncapping the low speed mixture screw, and setting it at 2-1/2 turns open will give you a perfect running tuber as long your are close to stock on the inlet tract. I did that to mine and it was still right on the money when I went to ham can air cleaner with a low restriction K&N filter in it.

If yours is running right, I'd not want to restore it to stock unless you want to give the low speed smoothness, easier warmup, and better transition from low speed to main jets.

Jack
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Buellistic
Posted on Sunday, July 01, 2007 - 08:53 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Crashbuell:

Put in a #48 low speed, idle mixture needle 2 1/2 turns off seat, keep the
NOKK OEM M2 needle, raise the needle 0.050, radius the slide,a #200 high
speed, and a K&N air filter ...

Set the timing mark just coming into the rear of the timing plug hole ...

In BUELLing
LaFayette
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Crashbuell
Posted on Monday, July 02, 2007 - 04:47 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

That helps me a bunch! I knew I could ask you guys. Thanks for your time.
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