Quote:
Originally Posted by WadmalawJoe
Longhair to answer your question on the current advance can, it starts to work with very little vacuum at all, maybe 3-4 inches of vacuum, its at full advance by 10 inches for sure.
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How much vacuum does your engine make? At idle? At the pinging point?
It seems like there is still too much vacuum advance at that rpm.
This is the screwy thing about a distributor set-up for "ported vacuum". Since there is no vacuum to the distributor at idle, it has more initial advance and less vacuum advance to keep the total similar.
Which is why you can't just change which place where the hose is plugged, bad things can happen.....
Many older trucks are
converted to HEI, with "unknown" distributors. They really should be calibrated to match the points-type distributor that came out. The conversion is not done because the timing curve itself is wrong.
The carburetor companies have no idea what is going on, how could they?
Maybe for a few "specific applications" where is was that way in the first place, but how many of those are there? That is certainly not the case with the more universal-fit models.
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Quote:
Originally Posted by Longhorn Man
As for reading directions...
The directions are nothing but another man's opinion.
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Learn from the mistakes of others, you won't live long enough to make them all yourself...
Bad planning on your part does not necessarily constitute an instant emergency on my part....
The great thing about being a pessimist is that you are either pleasantly surprised or right.
