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Author Topic: +1.5mm bore w/ new 36mm jetting starting point?  (Read 379 times)

Offline Adeezy9183

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+1.5mm bore w/ new 36mm jetting starting point?
« on: June 14, 2018, 04:12:43 am »
Hey guys and gals.  New member here...Iím in the process of having CT racing bore my cylinder +1.5mm on my Ď87 LT250R and was curious of where to start jetting wise.  I have not received the carb yet(36mm Keihin PWK), nor do I know what jets are factory installed.  I am just curious of a good starting point.  I have a good bit of money in this thing and I want to do it right!  Thanks guys!
Andrew

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Offline 250rider34

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Re: +1.5mm bore w/ new 36mm jetting starting point?
« Reply #1 on: June 14, 2018, 07:09:44 pm »
What else is done? Pipe, intake, reeds, etc.
91 lt250r fully restored and race ready

Offline Adeezy9183

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Re: +1.5mm bore w/ new 36mm jetting starting point?
« Reply #2 on: June 15, 2018, 06:00:59 am »
Fmf pipe and silencer, vforce carbon fiber reeds w cage and no airbox.   

Offline 250rider34

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Re: +1.5mm bore w/ new 36mm jetting starting point?
« Reply #3 on: June 18, 2018, 02:10:17 pm »
Iím not familiar with the keihin carbs but someone should be able to help out with the info youíve given also what altitude are you running at?
91 lt250r fully restored and race ready

Offline Adeezy9183

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Re: +1.5mm bore w/ new 36mm jetting starting point?
« Reply #4 on: June 19, 2018, 12:04:44 am »
80-400ish

Offline All American

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Re: +1.5mm bore w/ new 36mm jetting starting point?
« Reply #5 on: July 17, 2018, 01:01:56 am »
There is a thread on this site that talks about Jetting and elevations which should get you close enough to do a plug chop
1-1985 SUZUKI LT250R
1-2013 HONDA TRX450ER

 

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