Re: Oil Filter Poser
On the full floater Ford bearings on '50's OHV engines...many that were close dimensionally were so converted for racing, and Moon supplied equivalent bearings in sizes for the popular engines that were too far dimensionally from Ford flathead...
The reason...the early OHVS when hotrodded could be made to rev far higher than the factories intended...and ran into a rev limit from catastrophic rod failures. Smokey Yunick eventually analyzed this weakness to the behavior of locked rod bearings in rods that distorted their big ends at high RPM's, a type of failure eliminated by the floaters. Rodders soon went a simpler route with boxed or special aluminum rods for drag cars, and the factories eventually strengthened OEM big ends, but for a while many hot engines could not reach their potentials without floaters...
BUT, I mentioned the floaters in connection with the capacity of Model A sized pump gears. Full floating bearings have clearance on both sides, and so offer more area for pressure drop than locked shell bearings...and the little A type gears had plenty of capacity for that.
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