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09-26-2023, 06:32 PM | #1 |
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Join Date: Dec 2022
Posts: 116
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Cowl vent seal. which way is up?
Got a repro cowl vent seal for my 39 truck. Its got a rounded side and a flat side. I assumed flat side down but it wont go in. It drops in rounded side down. So which way is correct?
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I am building a 1939 1 ton express |
09-26-2023, 06:39 PM | #2 |
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Join Date: May 2010
Location: southeastern Michigan
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Re: Cowl vent seal. which way is up?
Rounded side down, but don't glue it in place as you may well regret having done so at a later date.
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09-26-2023, 11:46 PM | #3 |
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Join Date: May 2010
Location: (Not far enough...) Outside of DC
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Re: Cowl vent seal. which way is up?
Additional info and pics from a 2017 thread on this topic but referencing 35 and 36's. Including DavidG's take back then.
https://fordbarn.com/forum/showthread.php?t=226803
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09-27-2023, 07:17 AM | #4 | |
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Join Date: Dec 2022
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Re: Cowl vent seal. which way is up?
Quote:
My new seal also seems to be too thick. The original one or what was left of the seal which looked like rubberised cork was only 1/8 thick where this new one is 5/16 thick.
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09-27-2023, 09:44 AM | #5 |
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Re: Cowl vent seal. which way is up?
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Adjustment: I have adjusted my cowl vent pressure so that when you push the cowl vent handle forward to close the vent, the vent lid just touches the gasket and then when you push the cowl vent handle just a little more the lid applies a small amount of downward pressure on the gasket to seal it. You don't want to "squish the gasket". I always leave the cowl vent lid in the "just touching the gasket" position as I don't want to continuously have downward pressure on the gasket when it's not raining. Continuous pressure will cause the gasket to take a set as it's exposed to so much heat. Also, my DRAKE gasket was installed in 1988 and was originally about 5/16 in. thick. I have adjusted the pressure so that it compresses just a hair more when vent is fully closed as shown in the last photo. Rub the gasket surface with Armoral every 6 months to keep it pliable. I guess I got carried away with such a long reply but, I hope it helps. Last edited by 19Fordy; 09-27-2023 at 02:30 PM. |
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