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  1. #1

    Join Date
    Dec 2008
    Va Beach

    Laydown Triple pipes Gp Question

    Hello,I've followed alot of threads on here ,have not posted much. So I hope you can help.
    I have a set of triples that were made by Darren Hedlund for Riva's Gp boats. The pipes were on a Power valve triple Lamey 81mm bore motor.
    My question I also have a BB Lamey 86mm triple cylinder , Do you think these pipes would work properly on this setup or were they design for the smaller bore setup only? Hoping the stringer dia is not too small? any Ideas?
    Thanks John
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  2. #2
    Moderator OsideBill's Avatar
    Join Date
    Mar 2006
    United States
    what are the difference in the two motors CC wise? my Lamey 6mm stroked 81mm was almost 1200 cc's

  3. #3

    Join Date
    Dec 2008
    Va Beach
    Well, with the orginal motor for those pipes is 81mm and a 8mm(76)crank,which works out to be 1174cc .
    The new engine is 86mm bore and the 8mm crank is 1323cc.

    I just started thinking that these pipes were built for a specific purpose and I might be getting to far from that point.

    Could be just worried about a nonissue

  4. #4
    cfgp927's Avatar
    Join Date
    Dec 2005
    Warsaw, Missouri
    those pipes were originally designed to fit the carbon fiber hulls that Riva campaigned in '97 and '98, I'm not sure they'll work in a standard GP Hull? If for some reason they won't fit correctly...I know someone who'll buy them from you!!!!!! I''ve got one of the c/f hulls and have been looking for the pipes. The pipes should be good volume wise for up to around 1500cc, They should help that 1300cc breathe real good!

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