Noticed in an engine book the other day the advice to fill the combustion
chambers in the head with a solvent to see if your valves are sealing
properly. No leakage into ports over night means all okay.
I tried it with some kerosene on a head I recently rebuilt. Two chambers
emptied into the intake ports over night. Since the intake valves and seats
were done on a NewWay cutter and the exhausts on a Sioux grinder, I figured
maybe they needed some lapping.
Did the suction cup and grinding paste thing on all 4 intakes. Now all 4
leaked over night!
Should I use the head as-is or seek professional intervention? (I guess
going to the list does approach "professional" in some cases).
JohnD
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