ok Larry - the question of the day.
As you know I am in the process of putting one of these works of art together (240D and I am serious). I have the option of running a 1980 manifold that does not have the cyclone separator or running the manifold with the separator. I have attached pics of the two different manifolds in addition to a pic that shows the one without bolted up. Which would you run? I did notice that the one with the butterfly (which allows for the separator to be bolted up) had a pretty heavy amount of oil/tar like deposits built up in it.

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Jim