Base Timing Questions

340inabbody said

So another question I have is this: if too much base advance makes starting more difficult then doesn’t a vacuum advance distributor add in a bunch more advanced (full vacuum) at idle? Wouldn’t that make the engine more difficult to start or at start up the vacuum delay makes it not add in until it starts?

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If you hook the VA to ported vacuum then at idle and very low throttle openings there won’t be any vacuum there.

If you do have vacuum on a ported port and it does have vacuum there the throttle blades are open too far.

If you have the VA hooked to manifold vacuum there won’t be any vacuum while cranking. Or not enough to pull timing.