 74 Distributor Vacuum Question, How many ports? |
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| 74914LE |
 Jul 24 2011, 11:44 AM
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#1
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Member  Group: Members Posts: 136 Joined: 6-April 04 From: Fort Worth, TX Member No.: 1,895  |
In sorting out the hoses on a 74 2.0, I discovered that the vacuum advance has
two ports coming out of it (Top Side/Bottom Side), however my intake only has one vacuum port. It is currently hooked up with the line going to the top side port on the distributor, and the bottom side is open. Question is, should this be plugged, or does it need to be connected to vacuum, and if so where to hook it up? Based on the information I was able to find, it looks like I have a early 2.0 distributor, and a later 2.0 intake. Any issue here? Thanks! |
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| mgphoto |
Jul 24 2011, 12:10 PM
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"If there is a mistake it will find me" Group: Members Posts: 1,375 Joined: 1-April 09 From: Los Angeles, CA Member No.: 10,225 Region Association: Southern California |
QUOTE(74914LE @ Jul 24 2011, 10:44 AM)  In sorting out the hoses on a 74 2.0, I discovered that the vacuum advance has two ports coming out of it (Top Side/Bottom Side), however my intake only has one vacuum port. It is currently hooked up with the line going to the top side port on the distributor, and the bottom side is open. Question is, should this be plugged, or does it need to be connected to vacuum, and if so where to hook it up? Based on the information I was able to find, it looks like I have a early 2.0 distributor, and a later 2.0 intake. Any issue here? Thanks! Hello 74914LE, I am having some of the same confusion, late '74 engines have only on vac connection to the intake, the Factory Service Manual states the '75 model year USA cars do not connect to the vacuum advance and only connect to the retard section of the vac unit, check my my thread listed below. I am trying to find out if I have the correct vac unit for a late '74 engine, let me know if the vac unit in the photo is the same as yours. Good luck, Mike http://www.914world.com/bbs2/index.php?showtopic=136830 |
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Posts in this topic
74914LE 74 Distributor Vacuum Question Jul 24 2011, 11:44 AM
74914LE My distributor has a vacuum port for both advance ... Jul 24 2011, 12:32 PM reharvey My all original 74 2.0 made in 10/73 has two ports... Jul 24 2011, 12:48 PM Dave_Darling The advance, the one that does not get connected t... Jul 24 2011, 11:27 PM mgphoto Hello Dave,
Just to find some answers not to hijac... Jul 25 2011, 10:24 AM Dave_Darling Unless something is drastically different about th... Jul 25 2011, 12:02 PM
mgphoto
Unless something is drastically different about t... Jul 25 2011, 12:08 PM Cap'n Krusty No 4 cylinder 914 came with a single vacuum uit. ... Jul 25 2011, 12:06 PM Dave_Darling Yes, but not with certainty that the vacuum unit i... Jul 25 2011, 03:24 PM 74914LE Thank you for the great feedback. There are so ma... Jul 25 2011, 07:00 PM Dave_Darling yes. Jul 25 2011, 07:03 PM |
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