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Metric unit of measure. In the case of engine displacement, it measures the total volume of all combustion chambers. Therefore in a 5.7L V8, each cha...
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Re: Car is driving me crazy: Engine tuning troubles (with a carb)

Subject: Re: Car is driving me crazy: Engine tuning troubles (with a carb)
by CentralCoaster on 2009/12/1 6:54:29

Quote:

Churchkey wrote:

Manifold vacuum to the distributor vacuum advance is a bad thing. Reason: As soon as you apply throttle the engine vacuum drops causing a drop in timing which aggravates an off idle stalling condition. Attach the vacuum advance to a ported vacuum source.


I don't agree with that. The manifold vacuum can be used to advance your timing to get a steady idle, and the mechanical advance in the distributor should take over at speed.

With ported vacuum, you'll need a ton of base timing and a very slow distributor curve to avoid too much advance at high speeds and heavy throttle.
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