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jimf909 
Samba Member
Joined: April 03, 2014
Posts: 7478
Location: WA/ID
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 Posted: Fri May 20, 2016 5:18 am Post subject: How to block fresh air to cabin? |
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I have searched, but my google-fu didnt come through...
My 1990 Vanagon always has fresh air flowing through the center defrost or foot vents, even with the fan motor off.
Is this how it was designed to work? It seems that when the stock, rear a/c is blowing cold air that there should be a way to block the fresh air coming in the front of the van (kind of like the recirc or max setting on other cars a/c restricts fresh air input).
The vent air is not warm, i.e. it's not flowing through the heat exchanger, it's just fresh air flowing through the center vents (defrost and/or foot) with the passenger and driver's side vents closed.
Thanks for any insights, ideas and suggestions.[/u]
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- Jim
| Abscate wrote: |
Do not get killed, do not kill others.
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Current: 1990 Westy Camper - Bostig RG4, 2wd, manual trans w/Peloquin, NAHT high-top, 280 ah LFP battery, 160 watts solar, Flash Silver, seam rust, bondo, etc., etc.
Past: 1985 Westy Camper - 1.9 wbx, 2wd, manual trans, Merian Brown, (sold after 17 years to Northwesty who converted it to a Syncro). |
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T3 Pilot
Samba Member
Joined: January 10, 2011
Posts: 1507
Location: Deep South of the Great White North
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jimf909
Samba Member
Joined: April 03, 2014
Posts: 7478
Location: WA/ID
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| Posted: Fri May 20, 2016 5:37 am Post subject: Re: How to block fresh air to cabin? |
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^^^ Thanks! That appears to be an improvement over the duct tape solution that crossed my mind.
_________________
- Jim
| Abscate wrote: |
Do not get killed, do not kill others.
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Current: 1990 Westy Camper - Bostig RG4, 2wd, manual trans w/Peloquin, NAHT high-top, 280 ah LFP battery, 160 watts solar, Flash Silver, seam rust, bondo, etc., etc.
Past: 1985 Westy Camper - 1.9 wbx, 2wd, manual trans, Merian Brown, (sold after 17 years to Northwesty who converted it to a Syncro). |
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Terry Kay
Banned
Joined: June 22, 2003
Posts: 13331
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| Posted: Fri May 20, 2016 8:36 am Post subject: Re: How to block fresh air to cabin? |
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Back Duct Tape, Sew up a piece of sunbrella and velcro it to the intake, cut a piece of plastic , plexiglass, and using the same screen screws holes attach it to the opening.
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T.K. |
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kamzcab86
Samba Moderator
Joined: July 26, 2008
Posts: 7925
Location: Arizona
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| Posted: Fri May 20, 2016 8:49 am Post subject: Re: How to block fresh air to cabin? |
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I used marine vinyl I already had in stock:
It doesn't block the air 100%, but airflow is greatly reduced.
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~Kamz 
1986 Cabriolet: www.Cabby-Info.com
 1990 Vanagon Westfalia: Old Blue's Blog
2016 Golf GTI S
"Real knowledge is to know the extent of one's ignorance." - 孔子 |
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Zeitgeist 13
Samba Member
Joined: March 05, 2009
Posts: 12115
Location: Port Manteau
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| Posted: Fri May 20, 2016 8:56 am Post subject: Re: How to block fresh air to cabin? |
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Is there any noticeable reduction in noise after this mod?
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Casey--
'89 Bluestar ALH w/12mm Waldo pump, PP764 and GT2052
'01 Weekender --> full camper
y u rune klassik? |
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insyncro
Banned
Joined: March 07, 2002
Posts: 15086
Location: New York
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| Posted: Fri May 20, 2016 8:56 am Post subject: Re: How to block fresh air to cabin? |
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| Zeitgeist 13 wrote: |
| Is there any noticeable reduction in noise after this mod? |
YES  |
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Wildthings
Samba Member
Joined: March 13, 2005
Posts: 50353
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| Posted: Fri May 20, 2016 9:25 am Post subject: Re: How to block fresh air to cabin? |
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| If the seals in your heater box are good and you leave the vent open to the rear that will relieve the pressure from the box eliminating the leakage and accompanying noise. |
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jimf909
Samba Member
Joined: April 03, 2014
Posts: 7478
Location: WA/ID
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| Posted: Fri May 20, 2016 12:25 pm Post subject: Re: How to block fresh air to cabin? |
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| Terry Kay wrote: |
| Sew up a piece of sunbrella and velcro it to the intake, cut a piece of plastic , plexiglass, and using the same screen screws holes attach it to the opening. |
Those are improvements over my duct tape and also not $225!
Thanks.
Also, it occurs to me that using duct tape on this duct may actually be an appropriate use of duct tape on a Vanagon...kinda sorta. 
_________________
- Jim
| Abscate wrote: |
Do not get killed, do not kill others.
|
Current: 1990 Westy Camper - Bostig RG4, 2wd, manual trans w/Peloquin, NAHT high-top, 280 ah LFP battery, 160 watts solar, Flash Silver, seam rust, bondo, etc., etc.
Past: 1985 Westy Camper - 1.9 wbx, 2wd, manual trans, Merian Brown, (sold after 17 years to Northwesty who converted it to a Syncro). |
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jimf909
Samba Member
Joined: April 03, 2014
Posts: 7478
Location: WA/ID
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| Posted: Fri May 20, 2016 12:28 pm Post subject: Re: How to block fresh air to cabin? |
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| kamzcab86 wrote: |
I used marine vinyl I already had in stock:
It doesn't block the air 100%, but airflow is greatly reduced. |
I think leaving a small bit of airflow may be preferable. I'm just not crazy about allowing in as much warm air as is currently allowed.
Thanks!
_________________
- Jim
| Abscate wrote: |
Do not get killed, do not kill others.
|
Current: 1990 Westy Camper - Bostig RG4, 2wd, manual trans w/Peloquin, NAHT high-top, 280 ah LFP battery, 160 watts solar, Flash Silver, seam rust, bondo, etc., etc.
Past: 1985 Westy Camper - 1.9 wbx, 2wd, manual trans, Merian Brown, (sold after 17 years to Northwesty who converted it to a Syncro). |
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djkeev
Samba Moderator
Joined: September 30, 2007
Posts: 32634
Location: Reading Pennsylvania
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jimf909
Samba Member
Joined: April 03, 2014
Posts: 7478
Location: WA/ID
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| Posted: Sat May 21, 2016 6:40 am Post subject: Re: How to block fresh air to cabin? |
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I told you my google-fu was broken! Thanks for 5 pages of helpfulness!
_________________
- Jim
| Abscate wrote: |
Do not get killed, do not kill others.
|
Current: 1990 Westy Camper - Bostig RG4, 2wd, manual trans w/Peloquin, NAHT high-top, 280 ah LFP battery, 160 watts solar, Flash Silver, seam rust, bondo, etc., etc.
Past: 1985 Westy Camper - 1.9 wbx, 2wd, manual trans, Merian Brown, (sold after 17 years to Northwesty who converted it to a Syncro). |
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Terry Kay
Banned
Joined: June 22, 2003
Posts: 13331
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| Posted: Sat May 21, 2016 7:23 am Post subject: Re: How to block fresh air to cabin? |
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You'll find out that less in the summer is the best for avoiding heat coming into the cabin.
Duct Tape is about the easiest, if you want to be creative , built yourself something, just make sure it's as airtight as you can get it.
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T.K. |
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