In need of needle shims
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  1. #1
    Senior Member PalmStateCrawler's Avatar
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    Does anyone have 4 or 5 .010 spacers that I can purchase?
    '13 690 Enduro R too many frickin farkles...
    '07 KLX250 farkled (wife's bike)
    '86 BW80 farkled to size
    '10 TW200 you will be missed

  2. #2
    Senior Member 805gregg's Avatar
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    McMaster Carr or your local dealer.

  3. #3
    Senior Member wayne's Avatar
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    JdubSC, Part number for McMaster-Carr is Z9750. They come in a quantity of 25 and cost about 7 bucks.

    Wayne.

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  5. #4
    Member lonedave's Avatar
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    Funny this came up today. I finished putting the carb back on my bike about 30 minutes ago and just came in from a test ride. I put in a new main (116), two 0.02 shims that I got today at Radio Shack and adjusted the pilot to 2 1/2 turns out. It definitely runs better at midrange and seems to run at least as well as before at low and high speeds. I lost that surging in the midrange that I've been putting up with since I got the bike last spring. I wish I'd taken the plunge sooner! The shims I picked up at Radio Shack were in an assortment package of small washers and one size was just under 0.02", so two measured about 0.038" or so. The package was $2.19. You might try there if you have one close by. I could put a couple in the mail if you'd like, but since I'm about 3000 miles away in Washington State, it might be easier to pick some up locally. PM me if you want a couple though. My bike is a 2000 with the older style carb so I'm assuming they'd fit the newer model carbs too.



    Dave

  6. #5
    Senior Member PalmStateCrawler's Avatar
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    Thanks Dave. I will check "the shack" tomorrow.
    '13 690 Enduro R too many frickin farkles...
    '07 KLX250 farkled (wife's bike)
    '86 BW80 farkled to size
    '10 TW200 you will be missed

  7. #6
    Banned qwerty's Avatar
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    I just use flat washers from a hobby shop or hardware store. Cost a nickle. If I want one thinner, set it on the anvil part of a vice and whack it with a hammer. No problem customizing thickness.




  8. #7
    Senior Member PalmStateCrawler's Avatar
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    1 of the washers I have equals 1/2 a notch on a needle. Is this similar to the thickness of a .01 shim? I don't have a micrometer to measure the exact thickness..
    '13 690 Enduro R too many frickin farkles...
    '07 KLX250 farkled (wife's bike)
    '86 BW80 farkled to size
    '10 TW200 you will be missed

  9. #8
    Banned qwerty's Avatar
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    Hmmm? 1/2 the difference in clip grooves is twice as accurate as fuel quality. Itry one and see how you like it.




  10. #9
    Senior Member PalmStateCrawler's Avatar
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    Quote Originally Posted by qwerty View Post
    Hmmm? 1/2 the difference in clip grooves is twice as accurate as fuel quality. Itry one and see how you like it.
    "fuel quality"? Are you reffering to octane or ethanol levels. I use 87 octane with 0 ethanol. You confused me. Just to clarify, you think I should use 1 washer or 2 to start with?
    '13 690 Enduro R too many frickin farkles...
    '07 KLX250 farkled (wife's bike)
    '86 BW80 farkled to size
    '10 TW200 you will be missed

  11. #10
    Banned qwerty's Avatar
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    I started with a 128 main jet. That really helped top end, but was still a little lean in the middle. One washer almost took care of all the midrange lean surge, so I added another. Worked great.



    The weather got cold so I switched to a 132.5 main, which was just a tad too rich--loss of a mph or 2 from top end. Midrange kind of bogged with 2 washers, so I took one out, and throttle response was restored.



    In the spring I drilled the 128 halfway to make a 130. One washer still had a tiny bit of lean surge in the midrange, two had a tiny bit of bog. I laid them on an anvil and gave them a good whack with a hammer to thin them a bit. Perfect.



    that's how I tune a carb.



    What will work best for you? Try one. If it helps, add another. If that helps, add a third. If the second washer makes no difference, go back to one, or whack a pair with a hammer to reach a happy median.




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