Re: What is a "reasonable" speed in a Model A for one to get "reasonable" engine life
The Model A engine has several engineering design flaws including small diameter poured bearings and not enough main bearings.
A contemporary engine like the 1927/1928 Dodge "Fast 4" has larger bearings that use replaceable inserts and a 5 main crankshaft.
No amount of craftsmanship can make up for an inadequate design.
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