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Old 08-06-2010, 07:34 PM
ACA ACA is offline
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News news news! Apparently I've been mistaken. I had my vacuum advance hooked up the way it was from stock with the 305.

Initial timing with vac advance disconnected, at idle, out of gear is 12*

Connected, it's 30*, at idle, out of gear.

It must be a manifold source at the carb, since it's advancing 18* at idle with vacuum advance connected.

That said, I ran the tests you asked me to, to figure out total timing.

Vacuum advance disconnected, I revved it to 3500, at which point it stopped advancing, staying at 30*.

Vacuum advance connected now, I revved it to 3500 again, and it stopped advancing at 50*.

I checked the manifold vacuum at idle again, and noted that indeed, it was around 14-15* at an idle roughly 750-800. Again, it idles very rough.
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