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High Performance Bicycle Engine Tips We all want our bicycle engines to push our bikes faster. Get exclusive engine modification tips and suggestions from us.

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  #1  
Old 10-21-2009, 08:53 PM
scabz24 scabz24 is offline
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Location: dunedin fl.
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Question mikuni carb question..help!

I have a chance to grab a mikuni carb cheap,its a vm18-144 18mm carb I believe this is the right one could anyone tell me if Im right and what jets etc. would be correct for a 66cc{80}motor any advice would be greatly appreciated,if this carb is not the right one for my motor could someone tell me which one from mikuni would work,im sure there are lots of carbs that would be great but a motorcycle friend of mine swears by mikuni as the best you can get.thanks!
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  #2  
Old 10-22-2009, 12:47 AM
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foureasy foureasy is offline
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Default Re: mikuni carb question..help!

if you can get it for 30 bucks or less it's a steal. with light porting and any expansion chamber your bike will scream.
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  #3  
Old 10-22-2009, 04:10 PM
scabz24 scabz24 is offline
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Default Re: mikuni carb question..help!

you guessed the exact price thanks for the info.already had my bro reserve it for me,much thanks!
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  #4  
Old 10-23-2009, 12:48 PM
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motorhead419 motorhead419 is offline
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Default Re: mikuni carb question..help!

I have a 25 pilot jet in my 18 mikuni and a 75 main jet. Needle in the middle. You have to make a bushing for the intake manifold as the mikuni is bigger there.
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Old 10-24-2009, 06:50 PM
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Outrunner Outrunner is offline
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Default Re: mikuni carb question..help!

Quote:
Originally Posted by motorhead419 View Post
I have a 25 pilot jet in my 18 mikuni and a 75 main jet. Needle in the middle. You have to make a bushing for the intake manifold as the mikuni is bigger there.
Motorhead is correct, you will have to make a sleeve or bushing to adapt the
larger diameter carb intake to fit your manifold. I made mine out of a piece of
3/4' PVC pipe. I cut it about 3/8' long and then sawed a 1/8th slot in the sleeve,
so that it could tighten down on the manifold. It's going to be a trial and error
fit, but it works great, plus it insulates the carb from high heat absorption.
I also have a #25 pilot jet, the needle clip is on the top notch and I'm running
a #65 main jet. It IS the right carb for these engines
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Old 10-24-2009, 08:36 PM
scabz24 scabz24 is offline
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Default Re: mikuni carb question..help!

Guys, thanks thanks alot for the tips I really appreciate it .Im new to this forum,and its very refreshing to see that most all of the people are no B.S.,and egos do not seem to get in the way of great advice,thanks again.
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  #7  
Old 10-25-2009, 10:15 AM
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Bikeguy Joe Bikeguy Joe is offline
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Default Re: mikuni carb question..help!

Excellent, timely info guys, thanks.
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