Carb options for a UL
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Intermediate
Joined: Dec 2022
Posts: 38
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From: Lakeside, ca
Carb options for a UL
Good afternoon. Ive been pondering what I want to use carb wise when I get my UL together. I do not have a linkert. Ive seen folks talking about using mikunis (38 or 40mm?). But I have a super B laying here and could machine an adapter. Would this be too much? They cover a wide range of displacement from 55 up to 100 depending on jetting. I also have a super E. Just curious on all your opinions since I have very little experience with these engines. Im in no way against a mikuni but I was just curious about the options for the s&ss. Thanks!
Seasoned HDF Member
Joined: Jun 2015
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From: Canada
The stock U carb has a 1-1/4" butterfly with a 1-1/8" venturi with a three bolt carb flange. My gut says the S&S is too big even with smaller jetting, unless you change the venturi (if possible) because a big hole is just that regardless of jetting.
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Intermediate
Joined: Dec 2022
Posts: 38
Likes: 14
From: Lakeside, ca
thats my thought. I could probably make a sleeve to choke down the super B but thats a lot of R&D. Thank you for the stock measurements. I sized up the super B with the stock manifold and noticed the size difference and how that would affect performance.
Seasoned HDF Member
Joined: Nov 2006
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From: la la land jerzey
Get the correct carb and install Ed’s E2000 ignition and dont look back - it will start 2 or 3 kicks cold once you get the rhythm down usually 1 kick at a hot stop
all the fluff about carbs - is like trying to convince a hot chick a short one feels the same and a long on
all the fluff about carbs - is like trying to convince a hot chick a short one feels the same and a long on
Seasoned HDF Member
Joined: Apr 2010
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From: Long Island, New York
As John so eloquently described, at the end of the day a Linkert will do the job perfectly, no reason to reinvent the wheel on that one. Aftermarket is not going to improve performance, if anything it might hurt being too big.
And a Linkert is cooler than anything else you suggested, just find one and get it mounted. Good luck.
And a Linkert is cooler than anything else you suggested, just find one and get it mounted. Good luck.
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Joined: Dec 2006
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From: Black Hills
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Intermediate
Joined: Dec 2022
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From: Lakeside, ca
awesome. Thank you!
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Joined: Jun 2015
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From: Canada
An M51 isn't hard to find, I believe WL's had them with the smaller venturi, the UH had a slightly larger venturi which you can buy reproduction and change it. You can also buy a complete reproduction carb as well.