[DeTomaso] Fwd: Brake Pressure Differential Valve
Joe Jaffoni
427390 at gmail.com
Tue Jan 15 11:53:30 EST 2019
---------- Forwarded message ---------
From: Joe Jaffoni <427390 at gmail.com>
Date: Tue, Jan 15, 2019 at 11:50 AM
Subject: Re: [DeTomaso] Brake Pressure Differential Valve
To: Julian Kift <julian_kift at hotmail.com>
Thanks Julian - it is leaking from the plastic switch in the center of the
brass block that faces toward the rear of the car. If everything is
working correctly, it is my understanding there is not supposed to be any
fluid in that location (so it's not a cross thread issue but rather as you
say, and internal issue probably due to failure of the o rings which were
supposed to have been replaced when it was rebuilt).
I am going to check in with the vendors shortly to see what they can hook
me up with (they are on the west coast and I'm in NYC, the worst place in
the USA to try to get car parts of any kind)...
If the vendors can't help, I have asked Mike Drew, GoNancy and Chuck Engels
for photos of their shuttle valve elimination set ups and I'll go that
route - Joe
On Tue, Jan 15, 2019, 11:21 AM Julian Kift <julian_kift at hotmail.com wrote:
> It may be a silly question, but the brake warning switch is original
> correct? That is a metric thread unit so just checking you don't have a
> thread mismatch issue.
>
> If the unit is leaking internally across the seals you have inter
> connectivity and possibly pressure equalization between your front and rear
> brake circuits which isn't ideal.
>
> Did you call other vendors like Larry Stock for a replacement unit?
>
> Julian
>
> ------------------------------
> *From:* DeTomaso <detomaso-bounces at server.detomasolist.com> on behalf of
> Joe Jaffoni <427390 at gmail.com>
> *Sent:* Tuesday, January 15, 2019 8:01 AM
> *To:* detomaso at server.detomasolist.com
> *Subject:* Re: [DeTomaso] Brake Pressure Differential Valve
>
> I had a nice call from Larry Finch last night and one thought we had was to
> simply plug the port where the brown brake pressure differential switch is
> screwed in. 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. Would it be possible to send me pics of
> your "plumbing" and the switch you added? Much appreciated - Joe
>
> ---------- Forwarded message ---------
> From: Joe Jaffoni <427390 at gmail.com>
> Date: Mon, Jan 14, 2019 at 5:43 PM
> Subject: Brake Pressure Differential Valve
> To: <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. I previously had the valve rebuilt by Muscle Car Research in
> Virginia which sells the rebuild kit...
>
>
>
> From what I’ve 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. I don’t want to try to rebuild it again.
>
>
> Does anyone know where to get another one? Preferably new? Wilkinson lists
> it (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
>
-------------- next part --------------
---------- Forwarded message ---------
From: Joe Jaffoni <[1]427390 at gmail.com>
Date: Tue, Jan 15, 2019 at 11:50 AM
Subject: Re: [DeTomaso] Brake Pressure Differential Valve
To: Julian Kift <[2]julian_kift at hotmail.com>
Thanks Julian - it is leaking from the plastic switch in the center of
the brass block that faces toward the rear of the car.A If everything
is working correctly, it is my understanding there is not supposed to
be any fluid in that location (so it's not a cross thread issue but
rather as you say, and internal issue probably due to failure of the o
rings which were supposed to have been replaced when it was rebuilt).
A I am going to check in with the vendors shortly to see what they can
hook me up with (they are on the west coast and I'm in NYC, the worst
place in the USA to try to get car parts of any kind)...
If the vendors can't help, I have asked Mike Drew, GoNancy and Chuck
Engels for photos of their shuttle valve elimination set ups and I'll
go that route - Joe
On Tue, Jan 15, 2019, 11:21 AM Julian Kift <[3]julian_kift at hotmail.com
wrote:
It may be a silly question, but the brake warning switch is original
correct? That is a metric thread unit so just checking you don't have a
thread mismatch issue.
If the unit is leaking internally across the seals you have inter
connectivity and possibly pressure equalization between your front and
rear brake circuits which isn't ideal.A
Did you call other vendors like Larry Stock for a replacement unit?
Julian
__________________________________________________________________
From: DeTomaso <[4]detomaso-bounces at server.detomasolist.com> on behalf
of Joe Jaffoni <[5]427390 at gmail.com>
Sent: Tuesday, January 15, 2019 8:01 AM
To: [6]detomaso at server.detomasolist.com
Subject: Re: [DeTomaso] Brake Pressure Differential Valve
A
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 <[7]427390 at gmail.com>
Date: Mon, Jan 14, 2019 at 5:43 PM
Subject: Brake Pressure Differential Valve
To: <[8]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...
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 ([9]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:julian_kift at hotmail.com
3. mailto:julian_kift at hotmail.com
4. mailto:detomaso-bounces at server.detomasolist.com
5. mailto:427390 at gmail.com
6. mailto:detomaso at server.detomasolist.com
7. mailto:427390 at gmail.com
8. mailto:detomaso at server.detomasolist.com
9. https://panterapartsusa.myshopify.com/products/01316A
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