Quote:
Originally Posted by MPKind
The engine shop said they have the bob weight card, what can be determined from that without the crank out of the engine? I asked if they could figure out what the original FW balance was, I was told no. I'm not savvy with what can and cannot be determined from that info. If it can be determined, how? Don't you need the crank and the bob weights to verify and measure the FW balance?
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The engine shop should be able to tell you if it's standard procedure at their shop to remove weight from the balancer/flywheel when they balance a crankshaft. This should be avoided if at all possible, but I've seen many shops over the years practice the bad habit.
If they did remove weight they should be able to identify the holes they made from the recently added holes. The last guys should be able to also. When you know the location of whose holes are where, we might be able to figure out why they were added. When one neutral balances a factory flywheel the majority of weight needs to be removed 180 degrees from the factory balance holes. Your picture looks like the majority of the holes are roughly 90° from the factory holes.