Re: Elusive Block Crack?
Engines build condense in the crankcase. Fuel tanks & even exhaust systems can form condense with broad temp changes and a lot of humidity in the air. It's all evaporated when the engine is cranked up again with the exception to the fuel tank. It has to have dry alcohol in there to draw in the water so it can be burned up by the engine.
200 degrees F seems high but flatheads will do that in traffic. Both cylinder banks rarely run the same temperature either.
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