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  1. m108

    trying to get the 251 running again?

    RE: stuck valve I checked the compression on one of my 230's cold this afternoon and got between 95 and 105 psi on all cylinders. Are you sure your gauge is good ? It should run with 1 stuck valve.If it's firing even if the distributor is out of time it should pop,spit,cough or something if...
  2. m108

    trying to get the 251 running again?

    RE: stuck valve I know from experence a 230 will run with 1 or more valves stuck and the 251 is just a bigger version. I have poured Marvel Mystery oil in them to the point of almost flooding them out when running to un stick them on several engines.On a flat head a stuck valve can't hit any...
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