Sprint GT Valve Clearances

Discussion in 'Sprint & Trophy' started by Aidan, Nov 15, 2020.

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  1. Aidan

    Aidan Well-Known Member

    Dec 31, 2018
    183
    93
    Essex
    Can anyone help regarding the valve clearances for my 2016 Sprint GT. I was looking on youtube and it looked like a fairly easy job to do a shim replacement using the Triumph tool to hold down the buckets. However, I've just had a look in the manual, and the shims are beneath the buckets requiring the cams to be removed. I guess I will find out once I start, but wonder if anyone had done the job themselves?
     
  2. Hubaxe

    Hubaxe Good moaning! aka Mr Wordsalad :)

    Mar 25, 2020
    1,692
    800
    Aix Les bains - French Alps
    I've not done it yet, I plan that for next year, but started to look at the process.
    Yes cams need to be removed, that also means the timing needs to be correctly reset.
    The Haynes manual may help.
     
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  3. Macduff

    Macduff Well-Known Member

    May 21, 2020
    49
    63
    Aberdeen
    Definitely shims-under-bucket so cams need to come out for any adjustment.

    However, my 2009 ST has had 3 checks by me and all clearances still within spec.

    Is this the first check or just the first for you?
     
    • Like Like x 1
  4. Aidan

    Aidan Well-Known Member

    Dec 31, 2018
    183
    93
    Essex
    Yup - bike has done 10,000 miles, but is now 4 years old. The manual says a shim check at 12,000 or 2 years (not sure why it should be age related), but I was going to do it while it gets semi-laid up over winter. I'll check first, obviously, and hope they're all still in spec!
     
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  5. Macduff

    Macduff Well-Known Member

    May 21, 2020
    49
    63
    Aberdeen
    Mileage is all that matters for valve checks. An engine set up and then not used for 100 years would still be in spec!
     
    • Agree Agree x 1
  6. Aidan

    Aidan Well-Known Member

    Dec 31, 2018
    183
    93
    Essex
    thanks for that - was what I suspected.
     
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  7. Iceman

    Iceman Crème de la Crème

    Apr 19, 2020
    1,980
    1,000
    Lancashire
    #7 Iceman, Nov 25, 2020
    Last edited: Nov 25, 2020
    Hi Aidan, the jobs really straightforward if you have a reasonable mechanical skill level, that said I am saying this from a personal point of view as a technician in a previous life, the cams have to be removed first before you can adjust any clearances, however it is very rare that many machines require their valve clearance adjusting, it is easy to check them to assertain if any adjustment is indeed needed. You say your machine has done 10,000 miles, I doubt very much any will be out of tolerances. Have a look on the Bikers Toolbox web site there is a useful chart for shim checking, more importantly if you sell the machine you have written evidence of completing the clearance check that looks a little more professional, if you are friendly with a local bike shop they may lend you shims, I say this as when checking any that may require re shimming you'd have them to hand rather than faffing about ordering them in from Triumph, often though it's only ever an odd one that's out, the ones I have had to adjust are extreamly few, and then only because the owner has been constantly red lining their machine in the lower gears. I guess you have the tools, micrometer, torque wrench etc etc. Hope this helps and ride safe all.
     
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  8. Aidan

    Aidan Well-Known Member

    Dec 31, 2018
    183
    93
    Essex
    thanks Iceman - really great reply.
     
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