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  1. #1
    thetolleyman's Avatar
    Join Date
    Jul 2010
    Williamsburg, VA

    Is it feasible to have my 38cc R&D heads milled to 40cc?

    I picked up a set of 1200 heads pretty cheap, but they measure out to around 38cc, I have no intentions of running race gas, so was hoping to up the volume a bit. Can I gain a couple cc just by doubling up on the base or head gaskets, is that a bad idea?


  2. #2
    Banned User
    Join Date
    Jun 2010
    Milwaukee WI
    Im pretty sure you could have a knowledgeable person open up the heads for you

  3. #3
    john zigler's Avatar
    Join Date
    Aug 2006
    You should NOT double up on head gaskets. You can on the base, ( better to order a special thicker gasket though) but this will raise your port timing and affect the tune of your motor.

    Better to either get correct domes, or have yours machined.

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