Chainsaw Repair

Can rough measure with a wire through the exhaust port. Measure the wire first of course! Then adjust what you get with the wire by the number of degree's it takes to rotate the piston that distance of the wire thickness. Not perfect but can ball park the numbers. Easier to get good numbers on the intake side as you can see it on the 372's. (Have just the cylinder on the cases)


I'm game to try either build concept. I can approx. the .040 with 2 base gaskets and measure the port timing. But would rather use a shim & 1194 for a real running trial.