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FunracerCO
Samba Member
Joined: October 18, 2020
Posts: 7
Location: CO
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 Posted: Sun Mar 17, 2024 10:07 am Post subject: Body side vents |
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On the 1971 SB, there is a vent just behind the rear window. Does that vent bring fresh air in, or does it suck out the interior air? It looks to be in a low-pressure area, so I would think it is to help with interior air circulation by removing air from the inside.
If that is the case, why put a scoop there facing forward? |
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glutamodo 
The Android
Joined: July 13, 2004
Posts: 26328
Location: Douglas, WY
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| Posted: Sun Mar 17, 2024 11:00 am Post subject: Re: Body side vents |
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Andy T.
IMAGE NOTE: It has been noted that Chrome based browsers may have issues in displaying my vast image library, which use non-secure links and are on an FTP server. Images should still be viewable if the link is clicked though.
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FunracerCO
Samba Member
Joined: October 18, 2020
Posts: 7
Location: CO
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| Posted: Sun Mar 17, 2024 4:05 pm Post subject: Re: Body side vents |
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| Thanks, Andy. It confirmed what I thought. |
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busdaddy
Samba Member
Joined: February 12, 2004
Posts: 51173
Location: Surrey B.C. Canada, but thinking of Ukraine
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| Posted: Sun Mar 17, 2024 5:41 pm Post subject: Re: Body side vents |
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Scoops?, I've seen some that require cutting out a big part of the metal underneath and some internal work to direct more air into the engine compartment. But some of the "stick on, no drilling required" scoops do nothing aside from reversing the flow VW's engineers intended to come out of those vents.
But it looks like you are a race car driver and you'll definitely be much more popular with the sex type you are trying to impress! 
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KTPhil
Samba Member
Joined: April 06, 2006
Posts: 34023
Location: Conejo Valley, CA
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| Posted: Mon Mar 18, 2024 9:13 am Post subject: Re: Body side vents |
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When Motor Trend reviewed this new VW model, it commented on the half moon vent shape, noting that it figured prominently in frontier ventilation folklore...
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heimlich
VWNOS.com
Joined: November 20, 2016
Posts: 6627
Location: Houston, Texas
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| Posted: Tue Mar 19, 2024 3:18 pm Post subject: Re: Body side vents |
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It's most notable for providing rust. There's foam behind them.
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rusty_74_bug
Samba Member
Joined: November 22, 2019
Posts: 321
Location: Vancouver, WA
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| Posted: Tue Mar 19, 2024 5:21 pm Post subject: Re: Body side vents |
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From what I understand, VW put it there to make selling it harder 50 years later because of all the rust 
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'74 Standard Bug |
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rusty_74_bug
Samba Member
Joined: November 22, 2019
Posts: 321
Location: Vancouver, WA
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| Posted: Tue Mar 19, 2024 5:29 pm Post subject: Re: Body side vents |
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| rusty_74_bug wrote: |
| From what I understand, VW put it there to make selling it harder 50 years later because of all the rust |
All joking aside, why couldn't VW see that water getting in there would be a problem? I'm guessing they did but never intended for the Bugs to still be on the road 30-50 years later??
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'74 Standard Bug |
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Glenn
Mr. 010
Joined: December 25, 2001
Posts: 76969
Location: Sneaking up behind you
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| Posted: Tue Mar 19, 2024 5:30 pm Post subject: Re: Body side vents |
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| rusty_74_bug wrote: |
| rusty_74_bug wrote: |
| From what I understand, VW put it there to make selling it harder 50 years later because of all the rust |
All joking aside, why couldn't VW see that water getting in there would be a problem? I'm guessing they did but never intended for the Bugs to still be on the road 30-50 years later?? |
Good guess.
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Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
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rusty_74_bug
Samba Member
Joined: November 22, 2019
Posts: 321
Location: Vancouver, WA
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| Posted: Tue Mar 19, 2024 5:32 pm Post subject: Re: Body side vents |
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| Glenn wrote: |
| rusty_74_bug wrote: |
| rusty_74_bug wrote: |
| From what I understand, VW put it there to make selling it harder 50 years later because of all the rust |
All joking aside, why couldn't VW see that water getting in there would be a problem? I'm guessing they did but never intended for the Bugs to still be on the road 30-50 years later?? |
Good guess. |
Glenn knows what I'm dealing with right now
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Glenn
Mr. 010
Joined: December 25, 2001
Posts: 76969
Location: Sneaking up behind you
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| Posted: Tue Mar 19, 2024 5:51 pm Post subject: Re: Body side vents |
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| rusty_74_bug wrote: |
| Glenn wrote: |
| rusty_74_bug wrote: |
| rusty_74_bug wrote: |
| From what I understand, VW put it there to make selling it harder 50 years later because of all the rust |
All joking aside, why couldn't VW see that water getting in there would be a problem? I'm guessing they did but never intended for the Bugs to still be on the road 30-50 years later?? |
Good guess. |
Glenn knows what I'm dealing with right now |
Been there.
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Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
"You may not get what you pay for, but you always pay for what you get"
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rodknu
Samba Member
Joined: May 10, 2022
Posts: 26
Location: Montana
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| Posted: Tue Mar 19, 2024 8:30 pm Post subject: Re: Body side vents |
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| Hmmmm..... so, I fixed the rust by welding in new panels behind the side vents and was planning on spraying new foam in them to block them off..... bad plan?????? |
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Blue Baron
VW Aficionado
Joined: June 16, 2006
Posts: 24166
Location: Southeast USA
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| Posted: Wed Mar 20, 2024 12:03 am Post subject: Re: Body side vents |
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The rust wasn't caused by the vents, but rather the foam insulation VW used starting in '72, causing the body to rust from the inside out.
To answer Fun Racer's question, it's a flow-through ventilation system that allows air to exit out the rear of the car, eliminating the annoying drumming when the windows are open. Basically it does what the popout windows do. They are exit vents, despite them resembling intakes. You'll see four vent openings on each side of the interior where the air exits.
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Tha Driver
Samba Member
Joined: November 01, 2004
Posts: 31
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| Posted: Wed Mar 20, 2024 2:09 am Post subject: Re: Body side vents |
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| rodknu wrote: |
| Hmmmm..... so, I fixed the rust by welding in new panels behind the side vents and was planning on spraying new foam in them to block them off..... bad plan?????? |
Just make sure you use CLOSED CELL FOAM. A lot of foam is open cell & will hold moisture.
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aka "Tha Driver" |
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baldessariclan
Samba Member
Joined: October 14, 2016
Posts: 1385
Location: Wichita, KS
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| Posted: Wed Mar 20, 2024 2:39 am Post subject: Re: Body side vents |
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| rusty_74_bug wrote: |
| rusty_74_bug wrote: |
| From what I understand, VW put it there to make selling it harder 50 years later because of all the rust |
All joking aside, why couldn't VW see that water getting in there would be a problem? I'm guessing they did but never intended for the Bugs to still be on the road 30-50 years later?? |
These cars were really only originally intended to last about 10 years / 100,000 miles or so, similar to most other cars of that era. And no car can be expected to sit out in the rain/wet for 30, 40, 50+ years (like a lot of these cars were) without rusting — gotta be realistic. The side vents and sound insulation foam were a perfectly acceptable design configuration, given the car’s originally envisioned usage and lifespan.
Yeah, it can be a serious headache now if trying to sell or restore, but that’s a common consideration with all older cars…
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1971 Standard Beetle — fairly stock / driver
baldessariclan -- often in error, never in doubt... |
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rusty_74_bug
Samba Member
Joined: November 22, 2019
Posts: 321
Location: Vancouver, WA
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| Posted: Wed Mar 20, 2024 3:55 am Post subject: Re: Body side vents |
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| baldessariclan wrote: |
| rusty_74_bug wrote: |
| rusty_74_bug wrote: |
| From what I understand, VW put it there to make selling it harder 50 years later because of all the rust |
All joking aside, why couldn't VW see that water getting in there would be a problem? I'm guessing they did but never intended for the Bugs to still be on the road 30-50 years later?? |
These cars were really only originally intended to last about 10 years / 100,000 miles or so, similar to most other cars of that era. And no car can be expected to sit out in the rain/wet for 30, 40, 50+ years (like a lot of these cars were) without rusting — gotta be realistic. The side vents and sound insulation foam were a perfectly acceptable design configuration, given the car’s originally envisioned usage and lifespan.
Yeah, it can be a serious headache now if trying to sell or restore, but that’s a common consideration with all older cars… |
Yeah I understand.
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Buggeee
Samba Member
Joined: December 22, 2016
Posts: 4429
Location: Stuck in Ohio
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rodknu
Samba Member
Joined: May 10, 2022
Posts: 26
Location: Montana
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| Posted: Wed Mar 20, 2024 12:08 pm Post subject: Re: Body side vents |
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| Thanks guys regarding using foam. I thought one purpose of the foam was to also prevent odors from the engine from entering the interior of the car. Am I wrong about that??? |
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baldessariclan
Samba Member
Joined: October 14, 2016
Posts: 1385
Location: Wichita, KS
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| Posted: Wed Mar 20, 2024 2:16 pm Post subject: Re: Body side vents |
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| rodknu wrote: |
| Thanks guys regarding using foam. I thought one purpose of the foam was to also prevent odors from the engine from entering the interior of the car. Am I wrong about that??? |
That might be part of it, but pretty sure the main purpose of the foam is to block noise coming from the engine compartment.
On earlier models, VW originally stuffed a crude sort of triangular "pillow" into those spaces. But suspect the later injected foam was both cheaper and superior at sound insulation.
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