Re: 18 HP fastwin on E-bay

[paulfromyork]

OK. I’ll admit it. I don’t want an obsessive power head rebuild. So before I decide on a short cut, can you tell me what else besides the condition of the bore and the rings affect the compression?

Wait. I know some of this. —-flatness and seal of head. —"closeness" of the head. i.e. shave metal to bring the TDC space to a smaller dimension. –fit and finish of the wrist pin and piston. –fit and finish of the crank journal. –fit and finish of the crank to the mains. –seal on the plug. Port timing.
(how am I doing?)

OK. So now I have a better perspective on why compression tells so much. Am I right?