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Thread: where is the vacuum advance on a Aisin carby?

  1. #1
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    Default where is the vacuum advance on a Aisin carby?


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    hey guys, I drive a stock AE82, be nice
    I removed the stupid vacuum rail thingie, but now i can't find which vacuum line is the vacuum advance.
    anybody know which one it is? Also, my dizzy has 2 vacuum thingos, is one for high revs and the other for really low revs?

    Thanks

  • #2
    Senior Member H8CHIR6KU's Avatar
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    vacuum advance is only on the dizzy. and any vacuum to the dizzy will do.

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    ic, so why has the dizzy got 2 vacuum lines connected to it?

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    Veteran Jonny Rochester's Avatar
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    They system is far more complex than just 2 vacuum lines. But, if you want to throw most of the vacuum lines away and block off the holes, you can. Then you need just 1 hose from the base of the carby somewhere, to the advance diaphragm of the dizzy. (Some dizzys have 2 diaphragms, one advance, the other retard).

    So you want to know which hole on the carby to use? Put your finger over the holes and see which one gives good vacuum with part throttle as you rev the motor. The other port is for the charcole canister.

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