piston mod on 250 engines?

Viewing 1 reply thread
  • Author
    Posts
    • July 28, 2013 at 5:42 am #5134
      Ian Harrison
      Participant

      Hi Nigel

      We don’t notice any difference with the holes drilled or not. The idea is that you get some extra cool mixture lubricating the port bridge.

      In my view your just as likely to get pulse-returned hot contaninated exhaust gas passing the other way when the piston is on the upstroke and crankcase pressure is negative.

      Best Regards

      Ian

    • July 28, 2013 at 1:58 pm #5152
      nigel cooper
      Participant

      Thanks Ian for the reply, (and the explanation)

       

      ps-Ill be posting a question in the  next few days regarding a comment you made a few years ago regarding cylinder ccs

       

      cheers nc

       

  • Author
    Posts
Viewing 1 reply thread
  • You must be logged in to reply to this topic.