[DeTomaso] Brake Pressure Differential Valve

Mike Drew MikeLDrew at aol.com
Tue Jan 15 11:12:11 EST 2019


Another alternative (what I did) is to eliminate the block and just run independent front and rear circuits, with a T-fitting in the rear line to accommodate a conventional brake light switch. It takes much less re-engineering as all the components are in the same relative location.


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> On Jan 15, 2019, at 08:01, Joe Jaffoni <427390 at gmail.com> wrote:
>   I had a nice call from Larry Finch last night and one thought we had
>   was to simply plug the port where theA  brown brake pressure
>   differential switch is screwed in.A  I'd also like to consider the
>   solution that GoNancy and Chuck Engles are using by eliminating the
>   shuttle valve altogether and using a micro switch on the brake pedal.A
>   Would it be possible to send me pics of your "plumbing" and the switch
>   you added? Much appreciated - Joe
>   ---------- Forwarded message ---------
>   From: Joe Jaffoni <[1]427390 at gmail.com>
>   Date: Mon, Jan 14, 2019 at 5:43 PM
>   Subject: Brake Pressure Differential Valve
>   To: <[2]detomaso at server.detomasolist.com>
>   I am getting close to the first post-resto drive and tried to bleed the
>   brakes this weekend but brake fluid is leaking out (heavily) from the
>   center of the port where the brown brake pressure differential switch
>   is screwed in.A  I previously had the valve rebuilt by Muscle Car
>   Research in Virginia which sells the rebuild kit...
>   A
>   From what Iave read, there should be no fluid at this "switch" port so
>   the leak indicates that the internal o-rings are allowing brake fluid
>   into that center port.A  I donat want to try to rebuild it again.
>   Does anyone know where to get another one? Preferably new? Wilkinson
>   lists it ([3]https://panterapartsusa.myshopify.com/products/01316A) but
>   I tried Steve earlier and he is on vacation and I am trying to get the
>   replacement so I can spend the three day weekend replacing it and
>   cleaning up the brake fluid on the new carpet in the front trunk -
>   Thanks
> References
>   1. mailto:427390 at gmail.com
>   2. mailto:detomaso at server.detomasolist.com
>   3. https://panterapartsusa.myshopify.com/products/01316A
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