[DeTomaso] Engine Bay Air Flow

Tomas Gunnarsson guson at home.se
Mon Aug 24 16:54:15 EDT 2009


Regardless of what the "natural" direction of air flow is it'll be tough to cool the condenser (or whatever cooler, e.g. oil, you've installed there) with like in this case 174 F air. I never heard that the deck lid opening flow reverses at high speed either.

Tomas

----- Original Message ----- 
From: "Mark McWhinney" <msm at portata.com>
To: "Will Demelo" <wdemelo at cogeco.ca>; <detomaso at realbig.com>
Sent: Monday, August 24, 2009 10:31 PM
Subject: Re: [DeTomaso] Engine Bay Air Flow


> Rumor has it that air flow into the engine bay via the AC vent as
> certain speeds, but as far as I know air always flows out of the opening
> above the decklid.
> 
> -----Original Message-----
> From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com]
> On Behalf Of Will Demelo
> Sent: Monday, August 24, 2009 12:58 PM
> To: detomaso at realbig.com
> Subject: [DeTomaso] Engine Bay Air Flow
> 
> Yesterday, I taped some light string to my rear deck lid and went for a
> ride. I was told by a few people (including Wilkinson) that the air
> flow, at higher speeds, flows into the rear opening. This was not the
> case. At least until 80 MPH. The air flows up from the engine, out the
> decklid opening.
> I kept track of air intake temperatures as I drove. At idle, the temp
> was 184 degrees. At 60 mph, the air intake temp was 174 deg. The outdoor
> temp was roughly 80 deg.
> I need to get the cooler air into  the motor. There is roughly, a 1% hp
> gain for every 10 deg cooler air. That's free hp.
> Will
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