Re: Drilled crank
The above answers do not answer jfreddie's questions! I once bought a C engine with a drilled crank but otherwise stock oiling. This engine had been raced but on inspection there was no damage to any of the bearings. I would run it as you now have it and not worry about anything. The dippers assure that the rods get oil immediately on start-up and the mains will still get oil from the valve chamber, all should be OK. Balance should not enter into the question.
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