[DeTomaso] Trans Cooler

[Tomas Gunnarsson]

That oil pump is new to me. What I'd seen before was a pump incorporated in
the rear end plate of the ZF. It shows in some of the documents I have on a
trans mounted flipped compared to the Pantera.

Tomas

-----Original Message-----
From: detomaso-bounces at realbig.com
[mailto:detomaso-bounces at realbig.com]On Behalf Of MikeLDrew at aol.com
Sent: den 8 augusti 2012 16:42
To: gow2 at rc-tech.net; detomaso at realbig.com
Subject: Re: [DeTomaso] Trans Cooler


In a message dated 8/8/12 6 55 25, gow2 at rc-tech.net writes:


> Soon to be looking at setting up in/out ports for trans cooler. Where are
> people tapping into the ZF for the trans cooler?
>

>>>I have to ask--will you ever be driving your car hard enough, long
enough, to need such a thing?   It's an enormously complex thing to do
properly,
and very very expensive.

In a Pantera, the pickup is at the bottom of the gearbox (where the drain
plug normally is).   A short line runs over to the former location of the
speedometer angle drive.   An oil pump (which incorporates a speedo drive)
replaces the angle drive.   That pump then propels the oil to the cooler,
and
the outlet from the cooler re-enters the gearbox via the fill plug on the
side
of the case.

>From the GT40 forum, here are links to photos of the pump:

http://www.gt40s.com/forum/attachment.php?attachmentid=49892&d=1291234860
http://www.gt40s.com/forum/attachment.php?attachmentid=49893&d=1291234860
http://www.gt40s.com/forum/attachment.php?attachmentid=49894&d=1291234860
http://www.gt40s.com/forum/attachment.php?attachmentid=49895&d=1291234860

Installed on a gearbox:

http://www.gt40s.com/forum/attachment.php?attachmentid=49896&d=1291235443
http://www.gt40s.com/forum/attachment.php?attachmentid=49897&d=1291235443

These parts are available from Jay Cushman in Maine, who is the nation's
leading supplier of original GT40 parts.   The pump costs $1275.

I suppose you could run an external electric pump though, which would
simplify matters greatly and reduce costs enormously.   Just take the oil
out of
the bottom and return it through the side filler.

But again, to what end?   While one can seriously make the case for engine
oil cooling for a car that will be driven extremely hard on the track or at
open road races, even those cars normally don't see gearbox temperatures
that would justify cooling the gearbox oil.   If you used a thermostatic
trigger to turn your electric pump on when the oil reached a temperature
that
justified cooling it, the pump would probably never turn on.   And if you
just
ran it for the hell of it, you'd overcool the oil and it would never heat up
properly, leading to stiff, unpleasant shifting.

I say to skip the whole idea....

Mike
_______________________________________________

Detomaso Forum Managed by POCA

Archive Search Engine Now Available at http://www.realbig.com/detomaso/

DeTomaso mailing list
DeTomaso at list.realbig.com
http://list.realbig.com/mailman/listinfo/detomaso