[DeTomaso] Attaching ZF Vent tube

Tue Sep 26 16:12:10 EDT 2017

I don’t have the ‘pipe’ that sticks out of the case I only have a replacement tube.

It is a street car and my concern is primarily that nothing get into the case (and keeping the car close to stock as possible).

Are you saying if I find a replacement for the pipe it needs to thread into the hole rather than just push it in?

Thanks,

Jim Kosloskey

From: jderyke at aol.com [mailto:jderyke at aol.com] 
Sent: Tuesday, September 26, 2017 3:30 PM
To: jim.kosloskey at jim-kosloskey.com; detomaso at server.detomasolist.com
Subject: Re: [DeTomaso] Attaching ZF Vent tube

Jim, stock was a little breather-fitting that pressed into the ZF diff case, with a short plastic hose leading over the side. The stock fitting is essentially only a 1" piece of metal tubing. A few people fabricate the massive-overkill 3000 psi-test ss tubes to run back to the rear of the ZF, supposedly to vent blow-by lube away from the tires which might cause skidding, but (I suspect) more for show. The LeMans Gr-4s did not use such. If your ZF top case is not oily while using nothing, its very likely you don't need anything there. 

To use your metal tube- depending on how it was fabricated, the little hole in the ZF is threaded for a pipe-to-AN fitting, or a 90 degree compression fitting. Chips from case threading should be caught or cleaned out of the cases, which properly requires removing the ZF from the car and the lower cover removed for access. 

There's a small adel-clamp to attach to the rear cover of the ZF to keep the long ss tube from shaking around. An extended plastic hose routed similarly would need the same clamp. On a street Pantera ZF that's filled to stock capacity, there will be essentially zero liquid coming out, as the ZF will not reach 200F by actual test. This is not even hot enough to remove water condensation from the cases, much less any lube. Racing, or overfilling the ZF of course is a whole 'nother subject.

FWIW, I use a 1" piece of metal tubing pressed into the ZF case and a short plastic hose that is restrained to run down very close to the side of the ZF case, some 2 feet away from the right tire. Numerous open track, years of autocross and very high speed highway driving (to 150 mph for up to 10 minutes continuous out in our deserts) has failed to deliver any liquid out of it since 1980. 
YMMV- J Deryke

-----Original Message-----

On 9/26/17, 8:56 AM, "DeTomaso on behalf of Jim Kosloskey"
<detomaso-bounces at server.detomasolist.com <mailto:bounces at server.detomasolist.com>  on behalf of
jim.kosloskey at jim-kosloskey.com> wrote:

> All,
>
>
> The vent tube attached to my ZF has disappeared.
>
>
> I have a new tube and now I have these questions:
>
>
> 1. Is there an adapter which goes into the ZF vent hole or do I
> just push the tube into the hole?
>
> 2. Is the tube then affixed somewhere to keep it from blowing
> away and if so how and where is it affixed?
>
>
> Thanks,
>
>
> Jim Kosloskey
>
>
> 1974 Yellow Pantera L #6949
>_______________________________________________
>
>
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-------------- next part --------------
   I don't have the `pipe' that sticks out of the case I only have a
   replacement tube.

   It is a street car and my concern is primarily that nothing get into
   the case (and keeping the car close to stock as possible).

   Are you saying if I find a replacement for the pipe it needs to thread
   into the hole rather than just push it in?

   Thanks,

   Jim Kosloskey

   From: jderyke at aol.com [mailto:jderyke at aol.com]
   Sent: Tuesday, September 26, 2017 3:30 PM
   To: jim.kosloskey at jim-kosloskey.com; detomaso at server.detomasolist.com
   Subject: Re: [DeTomaso] Attaching ZF Vent tube

   Jim, stock was a little breather-fitting that pressed into the ZF diff
   case, with a short plastic hose leading over the side. The stock
   fitting is essentially only a 1" piece of metal tubing. A few people
   fabricate the massive-overkill 3000 psi-test ss tubes to run back to
   the rear of the ZF, supposedly to vent blow-by lube away from the tires
   which might cause skidding, but (I suspect) more for show. The LeMans
   Gr-4s did not use such. If your ZF top case is not oily while using
   nothing, its very likely you don't need anything there.
   To use your metal tube- depending on how it was fabricated, the little
   hole in the ZF is threaded for a pipe-to-AN fitting, or a 90 degree
   compression fitting. Chips from case threading should be caught or
   cleaned out of the cases, which properly requires removing the ZF from
   the car and the lower cover removed for access.
   There's a small adel-clamp to attach to the rear cover of the ZF to
   keep the long ss tube from shaking around. An extended plastic hose
   routed similarly would need the same clamp. On a street Pantera ZF
   that's filled to stock capacity, there will be essentially zero liquid
   coming out, as the ZF will not reach 200F by actual test. This is not
   even hot enough to remove water condensation from the cases, much less
   any lube. Racing, or overfilling the ZF of course is a whole 'nother
   subject.
   FWIW, I use a 1" piece of metal tubing pressed into the ZF case and a
   short plastic hose that is restrained to run down very close to the
   side of the ZF case, some 2 feet away from the right tire. Numerous
   open track, years of autocross and very high speed highway driving (to
   150 mph for up to 10 minutes continuous out in our deserts) has failed
   to deliver any liquid out of it since 1980.
   YMMV- J Deryke

   -----Original Message-----
   On 9/26/17, 8:56 AM, "DeTomaso on behalf of Jim Kosloskey"
   <detomaso-[1]bounces at server.detomasolist.com on behalf of
   jim.kosloskey at jim-kosloskey.com> wrote:
   > All,
   >
   >
   > The vent tube attached to my ZF has disappeared.
   >
   >
   > I have a new tube and now I have these questions:
   >
   >
   > 1. Is there an adapter which goes into the ZF vent hole or do I
   > just push the tube into the hole?
   >
   > 2. Is the tube then affixed somewhere to keep it from blowing
   > away and if so how and where is it affixed?
   >
   >
   > Thanks,
   >
   >
   > Jim Kosloskey
   >
   >
   > 1974 Yellow Pantera L #6949
   >_______________________________________________
   >
   >
   >Detomaso Email List is not managed by POCA Posted emails must not
   >exceed 1.5 Megabytes DeTomaso mailing list
   >[2]DeTomaso at server.detomasolist.com
   >[3]http://server.detomasolist.com/mailman/listinfo/detomaso
   >
   >To manage your subscription (change email address, unsubscribe, etc.)
   >use the links above.
   >
   >Members who post to this list grant license to the list to forward any
   >message posted here to all past, current, or future members of the
   list.
   >They also grant the list owner permission to maintain an archive or
   >approve the archiving of list messages.
   _______________________________________________
   Detomaso Email List is not managed by POCA
   Posted emails must not exceed 1.5 Megabytes
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   list. They also grant the list owner permission to maintain an archive
   or approve the archiving of list messages.

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