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zoomcat
Samba Member
Joined: December 01, 2020
Posts: 5
Location: Cincinnati, OH
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 Posted: Sun Jun 15, 2025 10:58 am Post subject: Adding fresh air ventilation and a cabin filter |
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My wife has significant allergies, and cabin filters in our modern cars have been quite helpful.
Has anyone tried to retrofit some kind of HEPA ventilation in the older cars? I’ve got a line on a clean 67 and I’m not seeing any way without major surgery. |
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scrivyscriv
Samba Electrician
Joined: October 04, 2011
Posts: 3344
Location: Memphis
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| Posted: Sun Jun 15, 2025 1:35 pm Post subject: Re: Adding fresh air ventilation and a cabin filter |
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The 1968+ cars have a fresh air box built in and some have a (weak) two speed recirc fan built in. It uses the stock defrost vents. That might help towards adding a filter
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Robert in Memphis
Dünkelgrügen 1967 Java Green bug thread
Engine rebuild thread
If you're ever in the Memphis area, you are welcome to stop by for advice and help. |
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zerotofifty
Samba Member
Joined: December 27, 2003
Posts: 3791
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| Posted: Sun Jun 15, 2025 6:42 pm Post subject: Re: Adding fresh air ventilation and a cabin filter |
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Bugs are fairly tightly sealed, closed up, little pollen can get in. short of that a N95 face mask perhaps? or maybe a small home hepa filter unit can be placed in the back seat or luggage area, and run off an inverter. to build a filter into the car will take some good deal of work, but a home type filter, maybe the size of a suitcase can be set in the back, the only issue is powering it, but invertors might work. a 67 Bug should be 12 volts, so that is good. stock generator might be the limitation if your filter draws a lot of power, but higher amp alternator can be fitted in place of the old generator if need be.
good luck!!!
Get the Bug!!!!
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Sorry About That Chief.
Give Peace a Chance.
Words to live by. |
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scrivyscriv
Samba Electrician
Joined: October 04, 2011
Posts: 3344
Location: Memphis
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| Posted: Sun Jun 15, 2025 7:00 pm Post subject: Re: Adding fresh air ventilation and a cabin filter |
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| zerotofifty wrote: |
| Bugs are fairly tightly sealed, |
Ya know, I've always seen the chatter about bugs being water tight for a certain length of time, and never **REALLY** believed it...
Then as I've fixed rust and replaced seals on my 1967 bug, I find it harder and harder to slam the door!! It's tight as a drum now! The frunk seal might be the weak point for pollen or air pollution, so if the OP gets the car, that would be something to look at fairly quickly.
_________________
Robert in Memphis
Dünkelgrügen 1967 Java Green bug thread
Engine rebuild thread
If you're ever in the Memphis area, you are welcome to stop by for advice and help. |
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zerotofifty
Samba Member
Joined: December 27, 2003
Posts: 3791
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| Posted: Sun Jun 15, 2025 9:24 pm Post subject: Re: Adding fresh air ventilation and a cabin filter |
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Another trunk area seal is the around the fuel tank. Put some seal between the tanks mounting flange and the body. (I used some hardware store foam home weather strip). And of course make sure the steering gear access covers are secured.
The trunk needs to be well sealed else the wind passing over AND under the car will get in the trunk area, and then thru the dash via the speaker grill, and leak around the glove box and such
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Sorry About That Chief.
Give Peace a Chance.
Words to live by. |
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