[DeTomaso] Two Pantera Questions

[Göran Malmberg]

Are you sure the cracking is not comming from vertical loads as the
gearbox is trying to lift the engine? In first gear we have 10 times
the engine Tq comming out to the rear wheels, making the gearbox
trying to rotate around the rear axle.
Goran.

----- Original Message ----- 
From: <MikeLDrew at aol.com>
To: <Pantera007 at provamo.com>; <artstephens at charter.net>; 
<detomaso at realbig.com>
Sent: Thursday, September 18, 2008 6:48 AM
Subject: Re: [DeTomaso] Two Pantera Questions



In a message dated 9/17/08 21 07 34, Pantera007 at provamo.com writes:


>
> Actually the reason the factory changed the rear ZF mount (I believe)
> is that with one (rear) mount and two front mounts, the ZF can much more
> easily
> twist under the applied torque.
> I do not have evidence (photos) of damage caused by the "early" mount, so 
> I
> am
> "surmising".
>
>>>That's true.   What would happen is that the Dash-1 gearbox would twist
under torque, and crack the mounting lugs on the bellhousing, or (more
frequently), the cast sideplates.   The improved mounting system coincided 
and
paralleled the development of a different bellhousing arrangement, and 
different
sideplates.

GT40s used the same sideplates as the Mangusta and Dash-1 Panteras, but they
cast up about a hundred sets in aluminum to save weight.   Those were found 
to
be structurally weak in the GT40, and most were replaced with cast iron as a
result of cracks that developed.   Most of the Pantera Dash-1 gearboxes got
the cast iron sideplates, but some Mangustas and a few Panteras received the
aluminum ones, apparently.
>
> >Sometimes DeTomaso changed things to be easier, sometimes cheaper,
> sometimes because
> Ford made him, and sometimes it was "better".
>
> Which was the reason in this case? I don't know.
>
> >>>This was a rare instance where the change made it more expensive to
produce, not less, but the net result was better.

Mike
>


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