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Because of an AD that some consider faulty if an engine is disassembled and it does not have a VAR crank, then a VAR crank needs to be bought and installed. VAR stands for Vacuum Arc Remelt, a process that supposedly strengthens the metal of a crankshaft. I say "supposedly" because some consider that the data which led to the this AD is suspect, and that non-VAR cranks are just as sound. But it doesn't matter, the regulations require you to replace non-VAR cranks when engines are disassembled and this adds considerably to the cost of an overhaul. Working from memory -- and I could be way off here -- it adds between $1,500 and $3,000.
Ernie
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