I had a composite gear fail once, but only after several years' service in one engine and then being moved to a new block and camshaft. We think it was the move that did it. It showed no sign of wear when we reused it, but definite signs of wear after the failure. I would suspect burrs on the the cam before suspecting the difficulty of turning an oil pump. Incidentally, we didn't use a bronze gear for break-in either time, though it certainly wouldn't hurt.
Jim
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****'63 Tempest, 475" IAII, Wenzler Super Chief heads, converted to blown alcohol, Birdcatcher, Littlefield 10-71 high helix. Best pass to date: 7.67 @ 181.59 (1/4 mi.), 4.95 @ 143.67 (1/8 mi.), 1.18 (60 ft)
7.75 @ 178 pass:
https://www.youtube.com/watch?v=Iez3...ature=youtu.be
First seven second pass(7.98): https://wwwoutube.com/watch?v=DK17...ature=youtu.be
Thanks to Paul Carter @ Koerner Racing Engines
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