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griso 2 valve cams

Discussion in 'Griso-Bella Chat & Tech' started by duc, Sep 8, 2020.

  1. duc

    duc Cruisin' Guzzisti GT Famiglia

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    Has anyone here replaced the 2 valve griso cam with an after market performance cam?
     
  2. GTM®

    GTM® Administrator Staff Member GT di Razza Pura

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    No, as it's a pretty awesome street cam as is. You'll lose somewhere to get more somewhere else. More power on top takes higher RPMs - as rabbit hole that is costly for the 2V motor. What are you hoping to achieve?
     
  3. duc

    duc Cruisin' Guzzisti GT Famiglia

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    todd this is Mell paul/Duc Atlanta ga. I have as you may remember a highly modified griso, Mike Rich stage three heads megacycle 620x10 cam. Jugs have been cut both top and bottom to take off .022" gives me a squish of about .040" and compression right at 10 to 1.
    I did not realize when replacing the cam that it was designed on the nose to help crank case breathing. I have always had a little problem with a slight amount of oil getting on the bottom ring of the plugs.Bike runs great but this is annoying just wondering if anyone had an answer to the problem or if they changed their cam and had the problem. I feel this is probably a blow by problem caused by
    Highrt crank case pressure than normal. I have dropped the oil level to just above the add mark and it seems to have helped.Got any suggestions for me.
    By the way been trying to e-mail you but seems to be a problem.
     

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