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05-22-2020, 03:11 AM | #101 |
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Location: New Jersey
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Re: Opinion on PCV valve for flathead?
Which PCV valve are you guys using on your set up??
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05-22-2020, 09:51 AM | #102 |
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Location: Wiscasset, Maine
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Re: Opinion on PCV valve for flathead?
You need to pick a PCV valve made that is close to your engine displacement. I use one for a 1990 Plymouth Voyager 3.0L or 181cid, V6. The number is PCV333. I went smaller and this works well for me. No oil mist on firewall and didn’t affect my carbs. I have two 97s and 269cid on a 59A.
Last edited by glennpm; 05-22-2020 at 10:04 AM. |
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05-22-2020, 03:36 PM | #103 | |
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Re: Opinion on PCV valve for flathead?
Quote:
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09-27-2020, 02:11 PM | #104 | |
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Re: Opinion on PCV valve for flathead?
Quote:
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09-27-2020, 03:00 PM | #105 |
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Join Date: Sep 2014
Location: Wiscasset, Maine
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Re: Opinion on PCV valve for flathead?
Yes I do! Also look at this post listing a horizontal mounted PCV for a small block Chevy, if you want a larger one than I used:
https://www.jalopyjournal.com/forum/...#post-12322077 Glenn |
09-27-2020, 04:06 PM | #106 |
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Re: Opinion on PCV valve for flathead?
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09-27-2020, 05:31 PM | #107 |
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Re: Opinion on PCV valve for flathead?
Good, glad I could help you!
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09-29-2020, 09:36 AM | #108 |
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Location: Chattanooga, TN
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Re: Opinion on PCV valve for flathead?
The vacuum port just below the carb on an iron 8BA intake uses 7/16 banjo threads. I bought a GM disc brake 7/16 banjo bolt and a 7/16 banjo to 3/8 hose barb fitting (AKA 12mm banjo x 10mm barb). I am using a Motorcraft EV68 PCV valve and a Dorman/Help 42052 Grommet in the road draft hole.
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09-29-2020, 03:20 PM | #109 |
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Re: Opinion on PCV valve for flathead?
My port below the carb (iron factory 8BA intake) is 3/8-18, which is NPT dimension. Just installed a fitting with a 1/16" nipple to run vacuum hose to a "Delco" distributor.
Maybe those manifold ports aren't just one size..... Last edited by 1948F-1Pickup; 09-29-2020 at 08:38 PM. |
09-30-2020, 01:27 PM | #110 |
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Location: Ventura, CA
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Re: Opinion on PCV valve for flathead?
The vacuum ports on most EFV8 intakes are generally 3/8" to accommodate vacuum for the distributor advance and wipers. The vacuum to operate the Columbia OD is tee'd into this port which is located below the rear carb on my Offie Super manifold.
Generally the engines for the larger trucks have a larger vacuum port to accommodate the vacuum assisted brake booster and/or 2spd rear axle.
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