ShawnG said:In reply to 1988RedT2 :
Packard v12, 2 6 cylinder distributors in one.
Set base timing on the first bank of cylinders with a light bulb on the points.
Rotate engine to the next timing mark and move the second, adjustable set of points to bring the second bank into phase with the first.
Verify both with a timing light while running.
It's confusing when you read the process in a manual but easy once you've done it on the car
Later Lincoln V12s have to be set up off the car.
My old Lamborghini was almost a pair of straight 6 engines whacked together - they ran twin six cylinder distributors off the front of the engine which were entirely independent and needed to be separately tuned.
In reply to wspohn :
The Colombo V12s used dual distributors too. Probably the same sort of arrangement.
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