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Post by mongoose on Sept 23, 2010 5:34:16 GMT -5
Should distributer vacuum advance be run off of manifold or ported vacuum? Does it make a difference whether it's a stock or modified application? Is the choice based on emissions (this is a '65... what are emissions?  ? ;D)? |
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Post by stan65cutlass on Sept 23, 2010 7:59:12 GMT -5
usualy it comes from below the throttle plates in the carb,so when you open the throttle it then sucks the advance diaphram
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Post by 65442 on Sept 23, 2010 11:58:22 GMT -5
You can use either, the one which makes the car idle best. Usually we use the ported to bring the idle down to a lower RPM. As soon as you touch the throttle it opens the ported vacuum and it adgust your timing.
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Deleted
Deleted Member
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Post by Deleted on Oct 2, 2010 22:17:16 GMT -5
Hey guys, I'm primarily a '66 Buick guy, but maybe this applies to you as well...
On the Carter AFB, the automatic cars used manifold vacuum...vacuum port was in the primary carb throat, below the throttle plate.
On 4 speed and '66 Ca emissions carbs, the vacuum port was higher, right at the throttle plate....most would call that ported vacuum.
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? ;D)?
FLYING AND DRIVING DOESN'T GET ANY BETTER