| Air condition air intake box mod [message #366449] |
Thu, 02 September 2021 09:13  |
tgeiger
Messages: 518
Registered: February 2006
Location: kansas city
Karma: -1
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I just had a question on the air intake box specific to the cut I make on the air intake area and firewall apparently around the glove box area. Am I thinking correct that there will be 2 surfaces that get cut? 1st will be the metal air box and behind it will be the firewall? And if thats the case do I need to seal somehow between the two surfaces to make sure it draws air from the box and thus the air passing over the evaporator only?
Thanks,
TG
Tom Geiger
76 Eleganza II
KCMO
[Updated on: Thu, 02 September 2021 09:14] Report message to a moderator |
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| Re: Air condition air intake box mod [message #366473 is a reply to message #366449] |
Sat, 04 September 2021 09:26  |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
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My 2 cents is if you have a 76 with add on max lower duct is leave it alone. If you drill for “recirculate only” you lose fresh air VENT function for driving in cool weather where you don’t need compressor. This air can also be warmed as needed. Also heater and DEF will be no fresh air leading to steamed up windows in rain situation. This means having to run compressor in DEF and fuel waste. Also outside air positive pressure going down road is good for not drawing in sewer odors. Wes did a full article on this back when the Cinnabar news letter was in print.
Lastly with recirc only, you lose the “65 MPH free ram air effect” to get more output from the dash vents as the squirrel cage is being force fed by the frontal area high pressure.
John Lebetski
Woodstock, IL
77 Eleganza II
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| Re: Air condition air intake box mod [message #366525 is a reply to message #366449] |
Tue, 07 September 2021 07:46 |
tgeiger
Messages: 518
Registered: February 2006
Location: kansas city
Karma: -1
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Senior Member |
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I guess I could do part of the mod and not the recirculating part and see how that cools. The recirculation part of the mod seems pretty straight forward and can be done at a later time if cooling is not enough.
TG
Tom Geiger
76 Eleganza II
KCMO
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| Re: Air condition air intake box mod [message #366536 is a reply to message #366525] |
Tue, 07 September 2021 11:28 |
roy1
Messages: 2126
Registered: July 2004
Location: Minden nevada
Karma: 6
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For me opening up a recirculating hole in the firewall and blocking the outside air intake made a huge improvement in the cooling ability in my 1976 coach lots of cold air coming out of the bottom add on ducts. I don’t need to deal with high humidity here in dry nevada we have almost no humidity but we do have high temperatures as it is mostly desert. I would do the modification then unblock the osa in humid weather .
Roy Keen
Minden,NV
76 X Glenbrook
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| Re: Air condition air intake box mod [message #366552 is a reply to message #366449] |
Tue, 07 September 2021 19:13 |
tgeiger
Messages: 518
Registered: February 2006
Location: kansas city
Karma: -1
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Senior Member |
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That was my thought Roy was to put a adjustable intake door on the outside of the box to allow to either completely block off outside air or on humid conditions adjust the opening as you say.
TG
Tom Geiger
76 Eleganza II
KCMO
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