To vent, or not to vent. That is the question.
#2079753
05/25/16 01:41 AM
05/25/16 01:41 AM
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Joined: Dec 2003
Posts: 10,938 Spokane Valley, WA
Big Bad Bee
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Which gas cap do I need for my car? Vented or non-vented?
1970 Coronet, does NOT have California emissions package.
I’m listening.
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Re: To vent, or not to vent. That is the question.
[Re: Neil]
#2079848
05/25/16 09:19 AM
05/25/16 09:19 AM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
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Posts: 36,040
Lincoln Nebraska
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I ain't for sure if this applies but does it have the mini vent hard line attached to the filler neck inside the trunk? I would think with that, that you would not want extra venting in the cap???
live every 24 hour block of time like it's your last day on earth
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Re: To vent, or not to vent. That is the question.
[Re: Big Bad Bee]
#2079921
05/25/16 11:34 AM
05/25/16 11:34 AM
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Joined: Dec 2007
Posts: 18,157 Mass
DAYCLONA
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I Live Here
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Mass
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Re: To vent, or not to vent. That is the question.
[Re: Big Bad Bee]
#2080476
05/26/16 02:41 AM
05/26/16 02:41 AM
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Joined: Jan 2003
Posts: 5,439 So Cal
Sinitro
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master
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So Cal
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Besides being vented or not.... Note that in 1970 Dodge and Plymouth used (2) caps with different size tabs. 1 had narrow tabs for the cam and 1 had wider cams.... Just my $0.02...
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Re: To vent, or not to vent. That is the question.
[Re: Big Bad Bee]
#2080715
05/26/16 02:59 PM
05/26/16 02:59 PM
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Joined: Jan 2003
Posts: 5,138 East Aurora (Buffalo) NY
RoadRunner
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My here. I thought the B-bodies with their flat tanks and filler necks behind the license plate used non-vented caps. That is the reason there is a vent line that goes from the tank, up through trunk floor, up wheel well and back out. The vent line forms a gas trap that ensures proper gas path. I recall reading that vented caps could expel fuel from a slug of fuel sloshing against the cap on hard acceleration. I always make sure the vent is clear and have always used non-vented caps. Never had an issue. I think e-bodies and chargers where the filler neck is far above fuel level used vented caps (depending on ECS requirements). Anyone have a parts book or manual handy?
68 Road Runner (383/4speed, post car w/decor pkg) - Major Project 69 Road Runner w/472 Hemi & 4 speed. 70 Challenger R/T SE EF8 w/ V9J, U - A32 - Major Project 2023 Ford Mach 1
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Re: To vent, or not to vent. That is the question.
[Re: RoadRunner]
#2081065
05/27/16 01:13 AM
05/27/16 01:13 AM
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Joined: Dec 2003
Posts: 10,938 Spokane Valley, WA
Big Bad Bee
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Well, here's the one I bought. http://www.classicindustries.com/product/mopar/parts/st10632.htmlI'm hoping it's the correct unit and that the picture is wrong (says "non vented") I didn't notice till After the purchase. The cam may not be right either. I guess I'll see. Thanks for the advice, gents. It's crazy the basic questions you need to ask when your car came to you in boxes and half the parts missing.
I’m listening.
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Re: To vent, or not to vent. That is the question.
[Re: Pynzo]
#2081768
05/28/16 11:41 AM
05/28/16 11:41 AM
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Joined: Dec 2003
Posts: 10,938 Spokane Valley, WA
Big Bad Bee
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I got both vent lines connected but did it over a year ago and can't recall which one I connected to which hose. I know I consulted the FSM. But in the end I think I connected the one closest to the hole for the trunk tube to that tube. I'll get under and check.
I’m listening.
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