Carrillo Modification by HPSTAN



      Cut a relief here to clear the Carrillio rod,
      YOU DO NEED A CARRILLO ROD !!

      Point at picture to see what happent to mine!!Rickard

      Trial assemble the engine cases & crank assy,
      to see actually how much to remove.

      CARRILLO

      1/2 longer rod

      The following advice comes from Ed Valiket of E&V ENGINEERING,

      “The reason for using the ˝” longer rod is to get the rod to stroke ratio
      correct, on a stock B50 the ratio is 1.69-1 and the engine does not want to
      rev beyond 6500 rpm, it just flattens out and with the 6.5” rod it is 1.84-1
      and this will allow the engine to rpm out better up to 8000 which gets it to act
      like a Goldstar.

      It all depends on what you are using the bike for. If you are just general riding
      on the street or motocrossing I would leave the stock rod in but if you are using
      it for road racing, speedway, dirt track or high performance street riding I would
      use the longer rod.

      The longer rod also lessens the side loading of the piston to cylinder at bottom dead
      center and doesn`t distort the bore so much and thereby freeing up some power.
      It is also easier on the wrist pin bushing lessening wear at this point.

      So now you know.
      Have fun

      Gerry Hedderwick

      Updated 22:07 2005-09-01
      © Rickard Nebrér