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Thread: Valve Clearence Check Numbers

  1. #1
    Site Supporter Ashley's Avatar
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    Valve Clearence Check Numbers

    1996 ST1100, 44,000 miles. As far as I know valves have never been adjusted, I've owned the bike since 16,000 miles. I decided to check them this weekend. My feeler gauges are in inches with the metric equivalent on them as well. However, since they are inches the metric is not exactly even (e.g. .006" = .152 mm). All of my valves are within spec but some are on the loose side, I would have expected tight but loose is good. Is it worth it bringing them back to the middle at this point? I do have 2 exhaust valves that are on the tight side of being within spec.

    EX 2 IN 2 IN 1 EX 1
    0.011 0.007 0.007 0.011
    0.010 0.007 0.007 0.011

    Ex 4 IN 4 IN 3 EX 3
    0.009 0.007 0.007 0.011
    0.009 0.006 0.007 0.010


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    Ashley Horn
    1996 ST1100

    Ok, the AZ trip was a fly and rent a Goldwing trip...

  2. #2
    This space for rent... Scooter's Avatar
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    Re: Valve Clearence Check Numbers

    They are within spec and likely to stay there for a long time. You have nothing of value to gain by moving them to the nominal values and might even cause some new problems. I'd leave them alone and go ride. Of course if you like to tinker with things, I'm not going to stop ya...
    Scooter

    "If a nation expects to be ignorant and free, in a state of civilization, it expects what never was and never will be." - Thomas Jefferson

  3. #3
    Site Supporter irish66's Avatar
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    Re: Valve Clearence Check Numbers

    Quote Originally Posted by Scooter View Post
    They are within spec and likely to stay there for a long time. You have nothing of value to gain by moving them to the nominal values and might even cause some new problems. I'd leave them alone and go ride. Of course if you like to tinker with things, I'm not going to stop ya...
    Just checked mine at 78000
    All werer good exhaust were .010 go .011 no go
    Intake were .006 go .007 no go
    Man tol are intake .005/.007
    Exhaust .009/.011
    Better off on the high they will tighten when warm.

  4. #4
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    Re: Valve Clearence Check Numbers

    Kinda what I figured. Just looking for other input. Valve covers are back on so I wasn't really planning to adjust anything at this point anyway

  5. #5
    One Track Mind dduelin's Avatar
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    Re: Valve Clearence Check Numbers

    Whew! Now you know and knowledge is good. Like you, I wouldn't have touched a thing.


    Dave

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  6. #6
    Site Supporter jvick98's Avatar
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    Re: Valve Clearence Check Numbers

    Ashley,

    Some of us have experienced valve clearances somewhat on the loose side upon first checking. After running two tanks of Techron (or Seafoam) they moved closer to the center.

    Jim

  7. #7
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    Re: Valve Clearence Check Numbers

    Quote Originally Posted by jvick98 View Post
    Ashley,

    Some of us have experienced valve clearances somewhat on the loose side upon first checking. After running two tanks of Techron (or Seafoam) they moved closer to the center.

    Jim
    Thanks. I've been meaning to run some seafoam but I'm not checking them again any time soon!

  8. #8
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    Re: Valve Clearence Check Numbers

    Quote Originally Posted by dduelin View Post
    Whew! Now you know and knowledge is good. Like you, I wouldn't have touched a thing.
    Glad to here this from you Dave. I think I made the right decision.

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