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  1. #1
    mrbtd's Avatar
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    Exhaust Bracket hole - How to drill it ?

    For a GPR -

    What kind of drill bit is supposed to be used to make a hole for access to the #2 carb adjustment screw ?


  2. #2
    All hail the Chief! fullboogie's Avatar
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    There are a couple of ways to go about it:

    Drill a small hole with a conventional drill bit and hack your way to a larger opening with a dremel cutoff wheel;

    Use a hole saw designed for cutting a hole in metal. They're hard to find, but they're out there. This takes a while, ruins the hole saw, and creates a ton of sparks - but the hole looks pretty clean. My preferred method.

  3. #3
    WATER WOODY's Avatar
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    here you go.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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  4. #4
    Moderator beerdart's Avatar
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    I'm going to mill mine on the Bridgeport tomorrow... Ill snap a pic...

  5. #5
    Moderator RX951's Avatar
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    I used a 2" hole saw with a starter bit and WD-40. Just like the pic above......you can see the hole for the starter bit.



  6. #6
    mrbtd's Avatar
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    Thanks for all the help

    My local true value had the hole saw for metal - I just took my time and sprayed a little wd-40 to keep it cool turned out pretty good.

    Now to get to the adjusters I need to take a long screwdriver and put a notch in it right ?
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  7. #7
    Moderator OsideBill's Avatar
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    A nut driver with notches works better. This still does not help for the low speed screws what a PITA they are. Spud has some adjusters on his low speeds that are like the idle adjuster with the cable I would love to find some of those.

  8. #8
    All hail the Chief! fullboogie's Avatar
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    Quote Originally Posted by mrbtd View Post
    Now to get to the adjusters I need to take a long screwdriver and put a notch in it right ?
    Craftsman makes an 18" long, 1/4" diameter flat blade screwdriver that is ideal. Simply use a dremel cutoff wheel or a hacksaw to put a small notch in the end of the blade, and you have your adjustment tool. You can also drill a small hole in the bottom of your battery tray, between the extinguisher and the battery, and drop the screwdriver in there while you ski.

  9. #9
    Quote Originally Posted by WATER WOODY View Post
    here you go.
    Thats the pic of my bracket.

    Pilot hole, 2 inch hole saw a lots of wd40

  10. #10
    Quote Originally Posted by fullboogie View Post
    Craftsman makes an 18" long, 1/4" diameter flat blade screwdriver that is ideal. Simply use a dremel cutoff wheel or a hacksaw to put a small notch in the end of the blade, and you have your adjustment tool. You can also drill a small hole in the bottom of your battery tray, between the extinguisher and the battery, and drop the screwdriver in there while you ski.
    Texas Brewed!!!!!

    make sure that the notch is exactly the same width as the diameter of the t handle otherwise you will get a lot of slack twhen turning it

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