Re: KPack's 1954 Panama

Posted by humanpotatohybrid On 2024/4/29 18:24:01

What about the engine sucking in nearly pure MMO?

Not sure for flatheads on valves. If anything it would be the intake valves since the engine is pulling a vacuum on the intake stroke.

The V8's have a rubber boot on the intake stems. IDK if the flathead engines have anything similar.

BTW, the oil pressure comment earlier is the same as I saw on my V8 going from 15W40 to 10W30. Packard recommended 10W30 in 1956 and I don't see much reason to go heavier than that except to compensate for a worn engine. Obviously the relief valve on your oil pump should limit pressure regardless of oil weight.