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  1. #1
    SLAP~YA's Avatar
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    Crank tunnel specs

    Hey,
    My SHO Engine is being machined at the moment, im chasing the specs for the crank tunnel measurements for line boring.
    the tunnel is out 6thou and machinist needs to know the spec. is it around 43mm?

    also what Are the torque specs for the ARP Crankcase stud kit.

    Thanks


  2. #2

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    I checked the yamaha service manual and I could not find the factory line bore measuremants. Here is the info from Riva for crankcase stud kit tork--- Following the torque sequence outlined in the service manual tighten the nuts in a three step process to achieve a
    total of 50 ft•lb. Tommy Jordan

  3. #3
    SLAP~YA's Avatar
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    Cheers Tommy,
    I Also had a look through the service manual and also couldnt find the spec, which i find odd.....

    Thanks for the Torque settings, that's one question answered!

    wheres the engine blokes like JD1 Im sure he would know

  4. #4

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    Try Riva they might can help you also! Tommy Jordan

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