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  1. #21
    1131 Adam E.'s Avatar
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    Quote Originally Posted by OsideBill View Post
    Adam Beautiful work!! puts me to shame Tell me what set-up are you running these on, and I can answer your questions better.
    This carburetor will be mounted on a 650 Yamaha Engine w/701 Pipe and dropped into my Waveraider. It is completely stock.

    Adam


  2. #22
    Moderator OsideBill's Avatar
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    Is that a single carb or dual set-up?

  3. #23
    1131 Adam E.'s Avatar
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    Quote Originally Posted by OsideBill View Post
    Is that a single carb or dual set-up?
    Single.

  4. #24
    Moderator OsideBill's Avatar
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    If it is a single then you will not need to worry about the drilled return or the dual supply, these are beneficial to the duals and triples for balancing pressure and added fuel supply. Now to answer the other question, that brass nipple comes with the primer kit you can get them from ebay or Atlantic jet sports, they come in single dual or triple kits for the Mikuni carb.

  5. #25
    1131 Adam E.'s Avatar
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    A few more questions:

    1. Where can I find a cheap pop off pressure kit? And how do you test?
    2. What are the jet settings for this setup? This carb came from a 61x.
    3. How can I ensure my seat arm is properly installed? I have been reading that this can be problematic for some people.

    Thanks again for the continued advice Bill.

    Adam

  6. #26
    Moderator OsideBill's Avatar
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    Here is a couple links and some PDF's to help there is one titled jetting all makes that comes from factory pipe this would get you close with your pipe.

    http://www.hydrotoys.com/gpr/tuners/...orAssembly.pdf
    http://greenhulk.net/forums/showthread.php?t=25893
    Attached Files Attached Files

  7. #27

    you can build your own ppkit

    If you want a cheap pop off pressure tester you can build your own with a bycicle pump some fittings and a hardware store pressure gauge. Goog it. I think i built mine for like 18 bucks.

  8. #28

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    Bill, where'd you get the new hoses from? When I rebuilt my carbs last year, I had to cut off my old hoses, and I got new hoses from AJS...those transparent blue fuel lines. But they aren't as snug on their nipples and tend to leak. I bought some snap hose clamps from McMaster. They do solve the problem, but they're ugly and take up space.

  9. #29
    Moderator OsideBill's Avatar
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    The Fuel line is Stock Yamaha Line you can order it from boats.net I order the longest piece I can find on their diagram. Remember the older skis like my 99 GP used 5mm line the GPR uses 6mm line. If you buy using the correct model ski you will have no issues.

  10. #30

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    Quote Originally Posted by Adam E. View Post
    Bill,
    1. What is drilling out the returns? I assume the return is just above the pulse fitting? What is the returns function and what advantage does this allow for?
    Quote Originally Posted by OsideBill View Post
    If it is a single then you will not need to worry about the drilled return or the dual supply, these are beneficial to the duals and triples for balancing pressure and added fuel supply. Now to answer the other question, that brass nipple comes with the primer kit you can get them from ebay or Atlantic jet sports, they come in single dual or triple kits for the Mikuni carb.
    So what exactly is drilling out the returns? I am getting ready to overhaul my carbs and would like to take care of everything at once.

    Also, with the dual fuel. I am assuming the dual supply is coming from the the "reserve" and "on" pickups in from the sending unit. Do you need an additional fuel filter then? Is there is a good spot to mount one.

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