RE: Trans cooler transfusion confusion

["Dupree, Jim" <dupree@alldata.com>]

What is/was the original?
Per Bentley the REE came with a "return flow 5-row" cooler.
The REE also has taller 3.08 final drive gears as compared to the lower 3.45
final drive gears for the RDN or RDG, more top end but slower off the line.
I don't know the fluid circuits in the trans to be able to say if it will or
won't work. Maybe I am overly conservative but I would be hesitant to try it
without knowing more than I do. 
I think the Bentley manual may be referring to the fluid flow to and from
the torque converter (major heat source). If there is an fluid passage in
the diff housing you could tap into you would have to tap into two places
and plug it in between to force fluid to flow through the cooler.
I would suggest a complete trans or the correct diff .
>From my experience at the dealership the trans with the rear mounted coolers
were less trouble.
Good Luck
Jim Dupree

		-----Original Message-----
		From:	Stephen Bigelow [mailto:sbigelow@sprint.ca]
		Sent:	Tuesday, October 26, 1999 4:34 PM
		To:	Dupree, Jim; quattro
		Subject:	Re: Trans cooler transfusion confusion

		The new diff is a REE 30 11 9.

		I posted this because originally, I got some private posts
that it _was_
		possible.




		>You are trying to mix to different generations of transaxle
into one,
		>probable a bad idea. On the bell housing of the trans is a
trans code, it
		is
		>3 letters followed by 5 numbers by the upper right bell
housing bolt. I.E.
		>RDG  08  03 5 which means an RDG trans produced 08 day of
the 03 month of
		>the 1985 . According to Bentley you could have a RDG (10/82
- 12/83 prod)
		or
		>a RDN (01/84 -> prod) transmission.  The RDG has a
"recirculating system
		>3-row" cooler and the RDN has a "supply flow 3-row" cooler.
Of course there
		>is a footnote, the RDN as of 4/10/85 has a 5-row cooler. If
the housings
		had
		>the same fluid passages you could conceivable install both
coolers and
		plumb
		>them into the coolant hoses but I doubt I would try it.
Audi trans coolers
		>are know to fail and 2 would double your chances of
failure.
		>Jim Dupree
		>
		> -----Original Message-----
		> From: Stephen Bigelow [mailto:sbigelow@sprint.ca]
		> Sent: Tuesday, October 26, 1999 12:34 PM
		> To: quattro
		> Subject: Trans cooler transfusion confusion
		>
		> Got a differential to repalce the busted one, but it looks
		>like the
		> replacements cooler was on the rear of the trans, and mine
		>is on the side.
		>
		> I see one (the aft one) plug for the cooler, and ...that's
		>all. The forward
		> hole seems like a blind, untapped hole.
		>
		> Is it possible to convert a rear cooler diff to a side
		>cooler diff?
		>
		> Drill and tap?
		>
		> HALP!
		>
		> Steve Bigelow
		> 84 5000S
		>
		>