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Old 07-11-2017, 11:30 PM   #22
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Join Date: Nov 2016
Location: SoCal
Posts: 711
Default Re: 60 mile per hour all day long?perhaps..

When I worked on big trucks and construction equipment years ago I saw a lot of broken crankshafts. Some engines are just known to do it if they were ran at too low a RPM, (Cummins). Some engines if they had a bent or not straight crank would struggle for power, (Cat 3408). A lot of crankshaft failures were the result of a bad damper on the front of the crankshaft, (Cummins). Some dampers were oil filled and would leak, (Cummins). It amazes me how seldom you hear of a broken crankshaft in a Model A engine given the problem with the center main bearing failure. Haven given a lot of thought about this flywheel lightening, I don't think I'd want anymore taken off the flywheel then the difference in a stock Model A crank and a counterbalanced crank. And everything would have to be balanced. It bothers me whenever I see an engine with the pan off and 2 rods with the same number. To me it wouldn't cost too much to remove the numbers and renumber in correct location when it was rebuilt. I saw a lot of factory flaws also, casting flash in the cylinder head causing over heating problem, somebody forgetting to install the valve stem seals. Huh, what are those?

Last edited by denniskliesen; 07-11-2017 at 11:39 PM.
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