at cruising speeds you will be in a high vacuum situation that advances the timing for better economy.
>you don't adjust the vaccuum advance. you adjust the distributor. then when engine is running the vaccuum advance will work automatically to the needs of the engine< As a matter of fact, the Ford vacuum advance is easily adjustable. Put a 1/8" Allen wrench through the open of the vacuum advance canister where the vacuum hose goes. Screw it in to slow the rate of advance and screw it out to speed it up. I think it works on a spring preload system.
Yes, it does have vacuum advance.
what is vaccume advance mechnism
If you're talking about the vacuum advance for the 216/235 distributor, then yes it has the vacuum advance, which runs off a carburetor connection close to the idle adjustment screw.
Remove the distributor cap. Remove the hose to the vacuum advance. Remove the two screws holding the vacuum advance on. Install in reverse order.
Ported vacuum - part time.
If you're asking about eliminating the vacuum advance on the distributor assembly, I don't think you can eliminate that without a computer controlled ingnition system. The vacuum solenoid is used to advance the spark under higher load, and works together with a centrifugal weighting system that adavances the spark based on RPMs.
pull the hose off the vacuum advance and some of them have a set screw inside the hole.
YES! Any time you adjust the timing you should disconnect the vacuum advance.
800rpm manual transmission, o degrees advance 1200rpm automatic transmission 4 degrees advance
"VAcuum advance". Step on it, vacuum goes down and it advances timing for more performance/power. Idle of letting off, advance goes back to setting for economy.
That engine does not have a vacuum advance.