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    #1

    Main jet size?

    So I'm rebuilding my carbs, and the first one I took apart, I see that the main jet size is 130, and stock is 112.5. Is this too big? My '82 GS750E does have a 4-to-1 exhaust and pods set up on it. Thoughts?
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    #2
    Originally posted by Anthony View Post
    So I'm rebuilding my carbs, and the first one I took apart, I see that the main jet size is 130, and stock is 112.5. Is this too big? My '82 GS750E does have a 4-to-1 exhaust and pods set up on it. Thoughts?
    First off you have to compare apples to apples . Stock jets are mikuni. Aftermarket dynojet measure different. The mikuni size equivalent is approx 10 off the DJ size. If your jets are part of a DJ kit it sounds about right which is what should be there for 4:1 and pods. Go to the DJ website they list the contents of the kit for your bike. Also if the needles have grooves it is DJ.

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      #3
      Mikuni jets will also have their trademark, which is a square inside a square.

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        #4
        I don't see a DJ130 on the main jet, it just says 130 and there is a small square on the left of the number.

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          #5
          a quandry ...........................

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            #6
            I'm most likely going to upgrade to the DJ jets anyways, will perform much better I'm sure. I just thought it was weird, and possibly why it was running weird (very sporadic acceleration).

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              #7
              Originally posted by Anthony View Post
              I'm most likely going to upgrade to the DJ jets anyways, will perform much better I'm sure. I just thought it was weird, and possibly why it was running weird (very sporadic acceleration).
              Is it a DJ kit or not? If oh already have one then you will be chasing your tail.

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                #8
                All the other jets have the Mikuni trademark square on them, and are stock sizes. The main jet was the only different size, so I don't believe it is a DJ kit.

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                  #9
                  Originally posted by Anthony View Post
                  All the other jets have the Mikuni trademark square on them, and are stock sizes. The main jet was the only different size, so I don't believe it is a DJ kit.
                  OK

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                    #10
                    la quandry

                    Originally posted by posplayr View Post
                    a quandry ...........................
                    Ok so I smirked. And chuckled. But not out loud.

                    S.

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                      #11
                      if your needles are adjustable then you have a jet kit....
                      if not you don't...simple eh?

                      jet kits do not come with pilot's....eh?

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                        #12
                        Depending on the condition (how much oil) and brand/type of pods and how much/little packing is in your muffler, you will probably want to drop down to 127.5's or even 125's on the main jets.

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