<VV> '61 Fresh Air Plenum

[Ron]

There are times when you may want to defog but you don't want any heat. 
This is very common in Hawaii where the windows fog up when you have the AC 
on.  And, that's why my '75 Olds chills the defrost air to dry it before 
blowing it on the windshield.  The Corvair allows you to blow unheated air 
which is a benefit in warm, humid conditions.
RonH

----- Original Message ----- 
From: "Bill Hubbell" <whubbell at umich.edu>
To: "'Ron'" <ronh at owt.com>; "'Kent Duncan'" <kent_duncan at yahoo.com>; 
<virtualvairs at corvair.org>
Sent: Tuesday, September 18, 2007 11:24 AM
Subject: RE: <VV> '61 Fresh Air Plenum


> How do you figure, Ron?  The heat from the bottom of the engine should 
> clear
> your windshield very quickly, unless, of course, you just drove through a
> deep puddle of water.  Even if that is the case, I don't really see how 
> the
> upper shroud air would help, because once the water gets into the system 
> you
> need heat to vaporize it.
>
> All I know is that on my 1964 sedan with a completely rebuilt and 
> perfectly
> working fresh air heater, I never use the "Air" control - it just doesn't
> add anything useful.
>
> Bill Hubbell
>
>
> -----Original Message-----
> From: virtualvairs-bounces at corvair.org
> [mailto:virtualvairs-bounces at corvair.org] On Behalf Of Ron
> Sent: Tuesday, September 18, 2007 2:11 PM
> To: whubbell at umich.edu; 'Kent Duncan'; virtualvairs at corvair.org
> Subject: Re: <VV> '61 Fresh Air Plenum
>
> The kick panel vents don't help your defroster one bit and that's what 
> that
> upper shroud duct is for.
> RonH
>
> ----- Original Message ----- 
> From: "Bill Hubbell" <whubbell at umich.edu>
> To: "'Kent Duncan'" <kent_duncan at yahoo.com>; <virtualvairs at corvair.org>
> Sent: Tuesday, September 18, 2007 10:01 AM
> Subject: RE: <VV> '61 Fresh Air Plenum
>
>
>> Corvairs could be equipped with a "Heater Delete" option (often done in
>> warmer climates), in which case not only would the engine top shroud be
>> blocked off but also the lower shrouds, all the holes in the car for the
>> heater hoses, and the heater motor and plenum would be missing, as well 
>> as
>> the heater control, cables, and wiring.  If this is the condition of your
>> car you will have nothing to hook up a hose to (and if this is indeed 
>> what
>> your car is like, please send me the Fisher Body tag information or 
>> better
>> yet, a clear photo of it as it will help us in our quest to decipher the
>> accessory codes)
>>
>> However, more than likely, somebody just blocked off the upper shroud.
>> The
>> primary reason: many people feel that the "fresh air" outlet off the 
>> upper
>> shroud robs the engine of essential cooling air (especially cylinder #5)
>> leading to early engine failure.  Besides, you can always get cool fresh
>> air
>> by opening the kick panel vents, so it is not really necessary.  If you
>> have
>> a "fresh air heater" and the air coming out of the floor vents is too hot
>> when you use the "heat" control (and it will be, if all your hoses,
>> thermostats, etc. are working properly!), just open the kick panel vent a
>> bit and you will get a nice mix of air (except on hot days of course, but
>> then why would you be using your heater?)
>>
>> Bill Hubbell
>>
>> -----Original Message-----
>> From: virtualvairs-bounces at corvair.org
>> [mailto:virtualvairs-bounces at corvair.org] On Behalf Of Kent Duncan
>> Sent: Tuesday, September 18, 2007 12:14 PM
>> To: virtualvairs at corvair.org
>> Subject: <VV> '61 Fresh Air Plenum
>>
>> The fresh air plenum on the engine shroud of my '61
>> Monza is equipped (?) with an apparently "factory"
>> block off plate.  While I've got things apart, is
>> there any reason not to remove that plate and add the
>> necessary hose between the engine shroud and heater
>> plenum?  Will this change alone give me "fresh air"
>> capabilities for the interior?  Is this a factory
>> delete of some kind, and if so, why would anyone
>> choose it?
>>
>> Thanks--what a great source of advice this forum is!
>>
>> Kent Duncan
>> '66 Monza
>> '61 Monza
>>
>>
>>
>>
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