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Posted

Cool will set it at 11mm. Also got some 19cc domes on the way. Spoke to my porter and said the porting lowers the compression. I am getting 125psi right now with .20 over and 21cc domes. make sense?

Posted

Well here is the latest, Got the toomeys on waiting on the needle and jets for the PWK single. I put in 19cc domes got a TDR port and when I checked the compression I got 125 for both cylinders. A little low I think, The cylinders still had the crosshatch pattern on them. Is it necessary for this to wear down before it is broken in? Maybe I just got a bad compession gauge because it is harder to kick over than ever before. What do you think?

Posted

you have to check the compression with a known good gauge and the motor has to be warmed up first. You also have to have the throttle wide open while kicking, and pull both spark plugs.

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