Robert Allen writes:
> Vacuum advance increases fuel economy and provides for smoother running
> when cruising. It does nothing (for or against) performance. When using
> Vacuum Advance, it must be connected to *ported vacuum* which is a port
> just aft of the throttle plates on the carb -- not manifold vaccum as it
> used by the power brakes. You want vaccum advance to go away as soon as
> the throttle position increases.
For reference, the box-stock Lucas dizzy on my box-stock '74 uses
manifold vacuum, taken from one end of the balance pipe. It's
definitely closer to the block than to the carb butterfly.
--
Todd Mullins
Todd.Mullins@nrlssc.navy.mil On the lovely Mississippi (USA) Coast
'74 MGB Tourer in pieces (but getting there [slowly])
(witty quote here)
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