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  • #1

    Chapparal engines

    i just bought a super chief...and the motor doesn`t have the mikuni carb it has a toilet on it..was told that it should have a mikuni vm32 on it ..and they have new carbs on ebay...but my question is what size is the main jet...can i get some help , thanks in advance
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  • #2
    I just had my Chaparral 484 apart for my green Superchief and I was rebuilding the carb and the main jet on the stock VM32 Mikuni looked to be a 280.
    "Looks like you have a problem with your 4 wheeler........you're missin' two wheels there"
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    • #3
      The Superchief came stock with a VM30 and a 185 jet, but a 32, 34, or 36 work fine (jetting will be different, of course). I like the 36mm- they seem to feed the beast best.
      Stuck in the seventies- not in the swamp.

      (6) Attex, a Hustler, a Super Swamp Fox, (2) Tricarts, (3) Tri-sports, a Sno-co trike, 3 Dunecycles, and a Starcraft! ...so far

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      • #4
        Originally posted by Don View Post
        The Superchief came stock with a VM30 and a 185 jet, but a 32, 34, or 36 work fine (jetting will be different, of course). I like the 36mm- they seem to feed the beast best.
        Don, you're absolutely right, I wasn't even thinking when I posted that.......I had two carbs that I was working with on the workbench and the VM30 was the one from the Superchief, not the 32. The last two numbers on the main jet were "80" and I couldn't make out the first one. I thought 280 sounded familiar, but It seems that 180 seems a bit more logical now.

        A 30mm Mikuni seems a bit small for such a large displacement engine now that I think about it. If you don't mind me picking your brain, Don, what kind of jetting would you run in say a 32, 34, and 36mm Mikuni if it were on a stock G50B?
        "Looks like you have a problem with your 4 wheeler........you're missin' two wheels there"
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        • #5
          Hey, JP;
          I like to run 36's and I think we ended up with a 240 jet in the (mostly) stock Budracer (don't usually discuss the McKay specs). We've also run a 34mm carb and if I remember rightly, the 210 jet worked best.
          Stuck in the seventies- not in the swamp.

          (6) Attex, a Hustler, a Super Swamp Fox, (2) Tricarts, (3) Tri-sports, a Sno-co trike, 3 Dunecycles, and a Starcraft! ...so far

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          • #6
            Thanks, Don. And I just came across the specs for the Chaparral G50B in the literature section for the Superchief:

            http://www.6x6world.com/images/attex-atv/Attex-Superchief-ATV-Manual-02.jpg
            "Looks like you have a problem with your 4 wheeler........you're missin' two wheels there"
            sigpic

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            • #7
              i also have a RIM an i'm new to these things. I bought an new mikuni vm 34 off of amazon. im going to take your advice and put the 210 main jet in it should i change the polite and needle jets to? if so what size should i go with?

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