Miata Mailing List: October 1994, Message #193
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   From: dquara@encore.com (Doug Quara)
Subject: Re: Warm Miata
   Date: Tue, 11 Oct 1994 16:58:31 -0400

"Robert Cohen", On Oct 11,  4:49pm, writes:
> Subject: Re: Warm Miata
> Jeannie:
> Yes, but why is the air coming in thru the vents even warmer than the air
> flowing around the car?  When I stick my hand out over the door sill or
> up above the windshield the air feels lots cooler than what's coming thru
> the vents, even when I turn the fan way up.
> -------------
> Bob:
> Because the air that's forced into the intakes when the car 
> is at speed is (partially) routed past/near the heater radiator?  
> If it goes through the engine compartment, It'll get heated in any case.  (I'll
> look at my tech manual tonight to see if my guesses make 
> sense )
> 

I believe when the vents are set on "recirculate" (lever to the right),
it should get the air from the inside of the car, most likely near
the passenger's footwell.  When on "outside", it should get it from
the cowl vents just in front of the windshield.

I would imagine that a little leakage when set on "recirculate" is a
good thing, to let SOME fresh air in.

I'd say that either way, the are would get heated from the heater 
assembly and the fact that the underdash area is warm from the 
engine and tranny tunnel.

Turning on the A/C to cool all the ducting will reduce the temperature
of the air coming thru the vents after the A/C is turned off.

Doug Q.
dquara@encore.com