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  1. #1
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    harley davidson golf cart carburetor on jacobsen 321

    i know very little about how carburetors work. does anyone have any opinion on whether or not this carb i found would work, or have a reason why it wouldn't. are carburators relatively interchangeable. i want to buy it in the hope that it might work good on my jacobsen 321, but also don't want to waste money if there is some obvious problem putting this carb on my engine. i looked it up and the intake is 22mm and the air filter side 26mm on this carburetor. the HD golf cart (that this carb is for) is 200cc 2 stoke i think. i know that the jacobson is a smaller engine size but could this carb still work fine?

    Carburetor for 1967-1981 Harley Davidson Golf Cart 2-Cycle Tillotson 27158-67A | eBay
    Last edited by evanfrucht; 08-10-2017 at 03:16 PM.

  2. #2
    Senior Member lawn-boy biker's Avatar
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    Pretty big carb for a j-321 which is 101cc's or the size of the Harley mill. May work...may not.
    If I absolutely had to know the answer, my guess would be that the venturi is just too large a diameter.
    I have had no luck with carbs with a venturi larger than .750".
    Also, this is not a Tillotson but a Chinese knock-off.
    But hey... if ya got the spare coin, go for it. Most you can lose is $20.

  3. #3
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    i'm having trouble finding out the venturi measurement on most of the carburetors i'm coming across. i don't have much experience with carburetors so don't know much about their interchangeability. all i know is that i put a cheap chinese float bowl carburetor that said it was for a 4hp tecumseh on a 2hp briggs using a homemade manifold and it works great. runs much better and stronger than with the stock pulsa jet carb it had.

    how can i find out the venturi of a carburetor or even estimate it?
    Last edited by evanfrucht; 08-11-2017 at 02:49 PM.

  4. #4
    Senior Member lawn-boy biker's Avatar
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    The venturi is the narrowest part of the carburetor throat.
    Pic showing cross section of a Tillotson carb should clear things up:
    tillotson cross section showing venturi.jpg

 

 

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