Quote:
Originally Posted by alexiskai
This is certainly plausible as a theory, but I'm curious what evidence you have that improper timing -> wide temperature swings in the head -> gasket failure. Like, what forensic traces in a gasket failure tell you that it was due to improper timing?
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No forensics, just logic guided by experience.Improper timing can raise combustion temperature,higher combustion temperature put more expansion stress on the head and studs. Accuracy in timing and coolant temperature control (thermostat) provides both stability in combustion temperature and coolant temperature,meaning the head is under less stress from fluctuating temperature.Exhaust manifold gasket failure and manifold warping will also be eased by consistent combustion chamber temperature.Do you have to do this for a successful experience with a model a? no,the A engine in stock form yields an excellent service life properly maintained. I enjoy getting peak performance and efficiency from the L head 200 cu in four cylinder engine.