Machining crankshaft .040 on rod journals
What is everyone’s opinion on running a crankshaft that has been cut .040 on the rods? My N crankshaft is a little rough and the crank grinder thinks it will take .030 or .040 to clean it up. I’ve always ran std or no more than .020 under on the rods. .040 sure seems like a lot. The engine is a 68 WS 400 and will likely never see over 5,500 rpm and not be over 400 horsepower.
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