What Is Vacuum Advance

Vacuum advance offers greater better fuel economy and engine performance due to raised timing during periods of low speed such as gear shifting or stopping.

What is vacuum advance.

If it s hooked up straight to the intake and when you want the extra power then it can t advance it self because it s advanced all the way. It extends the combustion mixture burn cycle. A vacuum advance can do it if it s not hooked up right. It is made up of.

Feared by many and ignored by many more the vacuum advance can is an important component of your ignition platform that offers both performance and economy. On an automatic transmission a vacuum modulator leak will cause the engine to pull the transmission fluid into the combustion chamber creating an abundance of smoke along with transmission shifting problems. An advance plate attached to the trigger mechanism inside the distributor. Vacuum advance on the other hand responds to engine load and rapidly changing operating conditions providing the correct degree of spark advance at any point in time based on engine load to deal with both lean and rich mixture conditions.

Hook it up to the ported side of the carburator above the throttle plate. Or you could start your car and see if it pulls in when you give it gas. A vacuum canister a linkage and. The vacuum advance is an ignition timing control mechanism built into some distributors.

Hook the vacuum advance up to venturi vacuum that way as soon as you touch the pedal you have advance which means you can dump more fuel to it and make more power if you get 16 of vacuum advance 12 initial 28 adjust your mechanical advance accordingly dont go over 36 total timing i dont know why all these clowns plug vacuum advance into manifold vacuum it doesnt make sense i m a ford guy and that s how they came from factory some had too ports on the. Why do you need ignition advance in the first place. And can you really use vacuum advance in boosted applications. While we could do separate articles on all those questions it s easier to show you why you need advance how vacuum and mechanical advance works and which option is right for your needs.

The heart of a vacuum advance is a rubber diaphragm that converts applied vacuum pressure into advanced timing. How does it work.