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Discussion Topic:
Vacuum fitting
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thirtysixford |
08-02-2023 @ 11:49 AM
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Member
Posts: 210
Joined: Oct 2009
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My current intake manifold has a plate under the carb with a port that has a tee fitting going to the distributor vacuum brake and the windshield wiper. I have another manifold that has a port in the manifold itself under the carb mounting flange. It has a banjo fitting with a copper tube that goes to the distributor and the male fitting going through the banjo has a push on tube that must connect to the wipers. My first thought was this must be a check valve, but I can look through it and blow air in both directions I'm sure it's in the "Green Book" but I haven't found it. Anyone have any info?
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kubes40 |
08-02-2023 @ 12:18 PM
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Senior
Posts: 3396
Joined: Oct 2009
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I don't believe Ford ever utilized a plate to supply vacuum, at least not through 1948. The manifold you have with the vacuum port directly below the carburetor mounting flange is 1942 - 1948. Both the line for the distributor vacuum ("banjo") as well as the nipple for the wipers were connected here as depicted in your photo. I believe the part that you had initially thought to be a check valve is termed a "silencer".
Mike "Kube" Kubarth
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thirtysixford |
08-02-2023 @ 2:09 PM
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Member
Posts: 210
Joined: Oct 2009
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Kube, I'm sure you are right but I can't imagine this tiny thing silencing much..
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kubes40 |
08-02-2023 @ 5:13 PM
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Senior
Posts: 3396
Joined: Oct 2009
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Like you, I'd never quite understood the design necessity of this thing. Hopefully, a '42 -'48 expert can offer some insight.
Mike "Kube" Kubarth
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thirtysixford |
08-03-2023 @ 10:28 AM
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Member
Posts: 210
Joined: Oct 2009
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found this silencer is 17595 tube is 12226 prefix varies by year https://www.fordbarn.com/forum/showthread.php?t=247532&showall=1
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