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Compression Test? Hot versus cold.Any difference?

From: erik aase
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Date: March 18, 2003


I'm replacing the slant six in my 60 plymouth with a 383 from my 60 chrysler.My brother recommends that I compression test the engine before I pull it. That part makes sense however he insists that we compression test it when its cold and also when its hot. Is this really necessary? Won't any pressure differential cylinder to cylinder be the same across the temperature range. I think he just wants me to burn my fingers! We've agreed to let the forward look discussion settle the matter.Any clarification on this point would be greatly appreciated.


Last changed: July 19, 2018