T100 Bonnie Watercooled.....what The Valve Clearances?

Discussion in 'Technical Help' started by nickjaxe, May 2, 2022.

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  1. nickjaxe

    nickjaxe Member

    Sep 2, 2020
    12
    8
    Cheshire UK
    Hi all checking the valve clearances on my 2020 T100 Only reference I have is my Haynes Manual....its the correct one for water cooled engines.....but I am not confident the books clearance specs are correct for the exhaust valve....

    The Manual says.
    Inlet 0.05mm to 0.13mm
    Exh 0.12mm to 0.22mm

    I have since read online that the exh should be 0.08mm to 0.18mm
    The inlet fig tally.

    Anybody got any trustworthy figs for the exhaust gaps please...I dont see it in the bikes owner hand book.

    Are the T100 and T120 the same?
     
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  2. brown mouse

    brown mouse First Class Member

    Sep 15, 2018
    2,010
    643
    East Midlands, UK
    #2 brown mouse, May 2, 2022
    Last edited: May 2, 2022
    You may be right about the Haynes manual being wrong. I recently serviced my 1200 engine and looking at my notes the measurements for the exhaust values are 0.16 and 0.18 and I remember thinking at the time that they were only just in spec. Though I don't appear to have made a permanent note of the correct gap range, which I think I got from Triumph's official servicing instructions. They're at https://triumphtechnicalinformation.com/ and It costs 6 quid I think for a month's subscription (remember to cancel before it auto renews).

    The guy at TEC Bike Parts fitting a new camshaft on a T100 quoted the 0.08-0.18 figure. See...

    https: //youtu.be/J8xUOAROsBc?t=2031

    Note, remove the space after the https: above which I put in there to stop the forum software converting it into a 'media' link which starts the video from the start, not at the time point I gave where it mentions valve clearances.
     
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  3. nickjaxe

    nickjaxe Member

    Sep 2, 2020
    12
    8
    Cheshire UK
     
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  4. nickjaxe

    nickjaxe Member

    Sep 2, 2020
    12
    8
    Cheshire UK
    Yes was watching that vid this morning....that were I spotted the different spec on gaps....what a pain.

    What can we trust these days..

    need to find out for sure....tempting to go for the tighter figs....but I dont want to burn out any valves.

    I will look into the Triumph site....worth £6 to be sure.
     
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  5. brown mouse

    brown mouse First Class Member

    Sep 15, 2018
    2,010
    643
    East Midlands, UK
    #5 brown mouse, May 3, 2022
    Last edited: May 3, 2022
    Let us know what the correct values are, save me a few quid next time ;)

    One thing I found when doing clearances was that removing and replacing rockers seemed to make clearances go down. So I ended up getting thinner shims than the maths would indicate. E.g. for one inlet I used a 0.075 thinner shim just to increase gap by 0.02, and for some (not all) shims that I didn't change, the gap went down a little after putting rocker on. And yes, I rotated engine loads to make sure shims were seated properly, and even tried removing and replacing rockers. And my digital micrometer was consistent and accurate when measuring shims.
     
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  6. nickjaxe

    nickjaxe Member

    Sep 2, 2020
    12
    8
    Cheshire UK
    Sounds a right fiddle.....not looking forward to it....luckily I have the measuring equipment like you.

    Looked at the Triumph Website....cannot see anything to do with tech help or subscribing to that service.
     
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  7. Pegscraper

    Pegscraper Elite Member

    Jun 12, 2020
    2,151
    800
    Yorkshire
    I set the clearances on my first Scrambler to those shown in the Haynes manual and it not only ran fine but actually quietened the tappets somewhat which was strange as they were all on the tight side which defies logic. I'll be using the same specs on my new 2022 model when the time comes. There appear to be quite a few electrical differences between the two models, possibly down to the Euro 5 crap but I assume the valve specs to be the same.
     
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