[DeTomaso] engine cover fan gizmo

[Christopher Kimball]

Good points.  1) I don't do a lot of high speed stuff, so the around town aspect could be valuable for me, and 2) I had considered the fact that a solid deck might limit the flow at high speeds, but the holes are about 5" in diameter and my hope is that's enough to allow for sufficient air flow (plus the fans output to boot) at higher speeds.

Mike Thomas (PNW President) came by today with his gorgeous yellow Pantera and we took our cars for a short drive.  Both cars worked well, and my deck fans blew happily!

Happy New Year!

Sincerely,

Chris


From: JDeRyke at aol.com
Date: Mon, 31 Dec 2007 16:14:55 -0500
Subject: Re: [DeTomaso] engine cover fan gizmo
To: chrisvkimball at msn.com; detomaso at realbig.com

Chris, a large percentage of the air going thru the radiator and under the car is sucked out that rear opening. The area above the rear deck is at a low pressure air-flow-wise and the faster you go, the more air is pulled up and out the hole. Photos made 30 years ago of Panteras at the Dry Lakes and Bonneville show a giant rooster-tail maybe 30 ft high trailing the car from the rear window area, at high speeds. So I'd think that whatever you use for fans would need to pull an awful lot of air or they'll just become flow-limiters. Perhaps its effect will be mostly felt at around town speeds. As far as looks, I had an air-to-oil cooler mounted in the screen for several years before I decided the thing was too small and was doing nothing to earn its keep. Good luck in your testing- J DeRyke


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