1980 Vacuum routing for recurve
Thread Starter
Instructor
Joined: Oct 2013
Posts: 144
Likes: 24
From: New Jersey
1980 Vacuum routing for recurve
Guys
I am completing the recurve of my 80 L48 dist. timing and I need to get manifold vacuum to the distributor vacuum can. I believe I can get the vacuum from the rear port as shown in the photo (yellow line). But what do I do with all the other lines (green lines) that seem to be controlling the air cleaner ducts? Where should I connect them, to be still operational?
Thanks
I am completing the recurve of my 80 L48 dist. timing and I need to get manifold vacuum to the distributor vacuum can. I believe I can get the vacuum from the rear port as shown in the photo (yellow line). But what do I do with all the other lines (green lines) that seem to be controlling the air cleaner ducts? Where should I connect them, to be still operational?
Thanks
Race Director
Joined: May 2006
Posts: 18,771
Likes: 2,596
Guys
I am completing the recurve of my 80 L48 dist. timing and I need to get manifold vacuum to the distributor vacuum can. I believe I can get the vacuum from the rear port as shown in the photo (yellow line). But what do I do with all the other lines (green lines) that seem to be controlling the air cleaner ducts? Where should I connect them, to be still operational?
Thanks
I am completing the recurve of my 80 L48 dist. timing and I need to get manifold vacuum to the distributor vacuum can. I believe I can get the vacuum from the rear port as shown in the photo (yellow line). But what do I do with all the other lines (green lines) that seem to be controlling the air cleaner ducts? Where should I connect them, to be still operational?
Thanks
Race Director
Joined: May 2006
Posts: 18,771
Likes: 2,596
Le Mans Master
Joined: Mar 2004
Posts: 7,507
Likes: 1,513
From: Little Rock AR
just cap the original distributor tap off the line. It's part of the Early Fuel Evap system for fast warm ups. You are bypassing that system as far as the vacuum advance is concerned.
Safety Car
Joined: Oct 2007
Posts: 4,387
Likes: 1,766
From: Seattle Area Washington
To me it looks like the DISTR TVS switch supply line is RED and on a 77 where it is connected to the carburetor vacuum nipple is Full Manifold Vacuum, not ported.
If you disconnect the RED vacuum line on your carburetor do you have vacuum at idle?
If so, just get a length of vacuum hose long enough to connect carb to vacuum advance can bypassing DISTR TVS switch completely.
If you disconnect the RED vacuum line on your carburetor do you have vacuum at idle?
If so, just get a length of vacuum hose long enough to connect carb to vacuum advance can bypassing DISTR TVS switch completely.
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