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Buell Motorcycle Forum » Old School Buell » Archive through August 31, 2009 » Tuing / Re-Jetting Mikuni 42mm « Previous Next »

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Fester99
Posted on Saturday, August 22, 2009 - 09:31 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I am looking for any assistance out there on tuning my Mikuni 42mm. I am trying to find out what jets I will need over stock with the following set:

Stock X-1 displacement 1203CC
Thunderstorm heads
Andrews N6 Cams
Force Intake
straight pipes for exhaust
Crane Single Fire ignition

Any guidance anyone may have will be appreciated. If I left something out let me know.
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Loki
Posted on Saturday, August 22, 2009 - 09:52 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

with my 1250, stg 2 XB heads, race header and supertrapp.....

all my 42 required was to go one or two jets richer on the main.
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Fester99
Posted on Saturday, August 22, 2009 - 12:03 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Do you know what jet sizes they are?
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Captainkirk
Posted on Sunday, August 23, 2009 - 12:43 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Read this:
http://www.mikuni.com/fs-tuning_guide.html
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