1983 SC CIS Vacuum Connections

[2jmotorsports]

Hello Pelicans,

I am wrapping up my CIS rebuild and I need your help in figuring out where all the various vacuum connections go. I have searched on here and have several vacuum diagrams on hand but frankly, nothing shows me a clear complete picture.

Because I am a visual learner, I labeled the following photos so that the communication is clear and hopefully helps others in the future. I need to know where to connect the following:

A. Upper Front Throttle Body Vacuum Port
B. Lower Front Throttle Body Vacuum Port



C. Upper Rear Throttle Body Vacuum Port
D. Lower Rear Throttle Body Vacuum Port



E. Large Front Canister Connection
G. Large Rear Canister Connection



H. Large Rear Left Airbox Connection



I. Outer Distributor Can Vacuum Port
J. Inner Distributor Can Vacuum Port



K. Decel Valve/Vacuum Limiter Can Vacuum Port



Also if anything of these are tee connections or if I am missing anything please add it here as well. Once I get this all sorted ill repost bigger versions of these photos with all connections labeled.

Thank you all in advance.

[Flat6pac]

Front vacuum port is high speed vacuum for advancing distributor.
On the rear of throttle body is vacuum below the butterfly for distributor idle retard.
Bruce

[2jmotorsports]

Thanks Bruce! That's consistent with the Porsche PET diagram.

A. Upper Front Throttle Body Vacuum Port >> I. Outer Distributor Can Vacuum Port
D. Lower Rear Throttle Body Vacuum Port >> J. Inner Distributor Can Vacuum Port

Also on that diagram are:

B. Lower Front Throttle Body Vacuum Port >> K. Decel Valve/Vacuum Limiter Can Vacuum Port
C. Upper Rear Throttle Body Vacuum Port >> Warm Up Regulator Vacuum Port (which I completely forgot to include)