Good points Bj�rn - I suppose I should subscribe to that list. :)

David Marshall

Fast Forward Automotive Inc.
4356 Quesnel Hixon Road
Quesnel BC Canada  V2J 6Z3

http://www.fastforward.ca    mailto:sales@fastforward.ca
Phone: (250) 992 7775        FAX: (250) 992 1160

- Vanagon Accessories and Engine Conversions
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-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com]On Behalf
Of Bj�rn Ratjen
Sent: November 25, 2002 4:58 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Attention TDI Gurus! What is hotter, oil or compressed air?

David!

Is that a real question?
If yes then my answer is: depends on the temperature!

If you are looking at your sandwich cooler application then mount the oil
cooler separate or after the air cooler. It is just physics. The intake air
will heat quicker than the oil but not become as hot. Therefore you lose
some cooling of the oil on hot days but not all of it. Reverse it and you
would lose all cooling of the intake air. The activation temperature of
thermostatically controlled fans on intercoolers is usually 70 C.

This would have been a perfect question for the TDI-conversion list at
Yahoo.com.

At 09:20 AM 11/25/02 -0500, you wrote:
>Date:    Sun, 24 Nov 2002 21:55:46 -0800
>From:    David Marshall <vanagon@VOLKSWAGEN.ORG>
>Subject: Attention TDI Gurus!  What is hotter, oil or compressed air?
>
>I am doing the final - on paper design of my ALH TDI installation that will
>be going into my Syncro DoKa over the winter.  From what I have heard from
a
>lot of TD and TDI owners and from my personal experience with a 1.9L AAZ
>Turbo Diesel is the oil temps can get damn hot with the turbo working all
>the time.

snip ....

>So in making the cooler sandwich, which one should be on top - the air or
>oil cooler?
>
>David Marshall
>
>Fast Forward Automotive Inc.
>4356 Quesnel Hixon Road
>Quesnel BC Canada  V2J 6Z3

Bj�rn Ratjen
Mill Bay, B.C.

1987 Vanagon Syncro est alia (self camperized, TDI )
1978 VW Bulli (self camperized)
1995 Passat TD Wagon (hers)
1970 VW Beetle (now mine)
1991 Jetta TD (now son's)
1986 Jetta TD (daughter's)
1986 Jetta TD (mine)
1982 Westy Vanagon Diesel (son's)