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Thread: value clearence values for 78cc vs 72cc

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    Question value clearence values for 78cc vs 72cc

    hi today i did valve clearance, i adjusted my dhoom 78cc values at .05 mm both exhaust and intake, i used the .05mm figure from the fact that all the mechanics use this settings .. i have verified after tuning from various mechanics .. also there is a topic about valve clearance in its owners manual at page 37 but it doesn't mentions any values for valve clearance. on contrary in Honda 70 owners manual the valve clearance is clearly mentioned on page 37 as well.. which is .05mm.. so my question is that as the carb of honda cd 70 and dhomm is exactly of same size where as the cylinder is of different ccs so is ok to set valve clearance for both bikes same ?

    also if anyone knows exact values of valve clearance for dhomm plz mention it.. i currently use .05mm for both..
    thanks in advance.


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    Wat doz Yamaha Authrised service shop recomend? I think there isnt any diffrence in heads fo both 72CC & 78 CC engines only the bore of cylinder is diffrent.
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    ^^^ does this 72cc and 78cc effects fuel avarage too ??
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    yar my main reason for asking this question is that once i went to a mechanic for tuning and he adjusted the value clearance withoyut using the feeler gauge,, it was warm engine,, and after that tuning my bike was so responsive and power full just like a 100cc bike , it was vry ver responsive and pick was awsome .. so it implies that the valves were not exactly set , and later i tried twicwe to tune from the same mechanic but to no avail,, didnt got that much response,, so there should be some tricks to it,,,,,

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