[DeTomaso] Brake Pressure Differential Valve
gonancy at juno.com
gonancy at juno.com
Mon Jan 14 18:54:43 EST 2019
FWIW I eliminated all that plumbing mess, shuttle valve and all. Now there’s an electric switch on the brake pedal and everything works great. Brake lights come on as soon as the pedal is depressed and brakes work great with fewer connections.
Keep it simple,
GoNancy
Please note: message attached
From: Mike Drew via DeTomaso <detomaso at server.detomasolist.com>
To: Joe Jaffoni <427390 at gmail.com>
Cc: detomaso at server.detomasolist.com
Subject: Re: [DeTomaso] Brake Pressure Differential Valve
Date: Mon, 14 Jan 2019 15:35:37 -0800
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-------------- next part --------------
Joe,
No, no, a thousand times no.
This is a disc/ drum proportioning valve. Pressure reduction to the rear circuit. ThenPantera has no pressure reduction.
You need a Pantera valve.
Mike
Sent from my iPad
> On Jan 14, 2019, at 15:22, Joe Jaffoni <427390 at gmail.com> wrote:
>
> I've had this naming problem before...in any case, its the brass junction block just below the brake booster...Does anyone think this will work (with some minor bending of the brake lines and "adjusting" the mounting bracket:
>
> https://www.ebay.com/itm/163424707842
>
>
>> On Mon, Jan 14, 2019 at 6:15 PM Mike Drew <MikeLDrew at aol.com> wrote:
>> Joe,
>>
>> No. That is a proportioning (pressure reducing) valve.
>>
>> Mike
>>
>> Sent from my iPad
>>
>>> On Jan 14, 2019, at 3:06 PM, Joe Jaffoni <427390 at gmail.com> wrote:
>>>
>>> Hi Mike - yes, I am talking about the the brass shuttle valve/junction block where the brake lines and the brake light switch connect. Ironically, the first one I had in the car was bad so Ron McCall was kind enough to send me another one. That's the one I had rebuilt by Muscle Car research and which is now leaking badly from the port where the brown brake pressure differential switch screws into. Does anyone think this one will work (with some bending of the brake lines and re-working the mounting):
>>>
>>> https://calponycars.com/1964-1973-classic/191-bra-653-041.html
>>>
>>>
>>>
>>> Joe,
>>>
>>> I had one I sold to Larry Stock years ago. He has several I think.
>>>
>>> To be clear, you are talking about the shuttle valve/junction block where several brake lines and the brake light switch connect, not the pressure reduction valve in the front brake circuit.
>>>
>>> Mike
>>>
>>> Sent from my iPad
>>>
>>>> On Mon, Jan 14, 2019 at 5:47 PM Mike Drew <MikeLDrew at aol.com> wrote:
>>>> Joe,
>>>>
>>>> I had one I sold to Larry Stock years ago. He has several I think.
>>>>
>>>> To be clear, you are talking about the shuttle valve/junction block where several brake lines and the brake light switch connect, not the pressure reduction valve in the front brake circuit.
>>>>
>>>> Mike
>>>>
>>>> Sent from my iPad
>>>>
>>>> > On Jan 14, 2019, at 14:43, Joe Jaffoni <427390 at gmail.com> wrote:
>>>> >
>>>> > 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 ([1]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. https://panterapartsusa.myshopify.com/products/01316A
>>>> > _______________________________________________
>>>> >
>>>> >
>>>> > Detomaso Email List is not managed by POCA
>>>> > Posted emails must not exceed 1.5 Megabytes
>>>> > DeTomaso mailing list
>>>> > DeTomaso at server.detomasolist.com
>>>> > 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.
>>>>
-------------- next part --------------
Joe,
No, no, a thousand times no.
This is a disc/ drum proportioning valve. Pressure reduction to the
rear circuit. ThenPantera has no pressure reduction.
You need a Pantera valve.
Mike
Sent from my iPad
On Jan 14, 2019, at 15:22, Joe Jaffoni <[1]427390 at gmail.com> wrote:
I've had this naming problem before...in any case, its the brass
junction block just below the brake booster...Does anyone think this
will work (with some minor bending of the brake lines and "adjusting"
the mounting bracket:
[2]https://www.ebay.com/itm/163424707842
On Mon, Jan 14, 2019 at 6:15 PM Mike Drew <[3]MikeLDrew at aol.com> wrote:
Joe,
No. That is a proportioning (pressure reducing) valve.
Mike
Sent from my iPad
On Jan 14, 2019, at 3:06 PM, Joe Jaffoni <[4]427390 at gmail.com> wrote:
Hi Mike - yes, I am talking about the the brass shuttle valve/junction
block where the brake lines and the brake light switch connect.
Ironically, the first one I had in the car was bad so Ron McCall was
kind enough to send me another one. That's the one I had rebuilt by
Muscle Car research and which is now leaking badly from the port where
the brown brake pressure differential switch screws into. Does anyone
think this one will work (with some bending of the brake lines and
re-working the mounting):
[5]https://calponycars.com/1964-1973-classic/191-bra-653-041.html
Joe,
I had one I sold to Larry Stock years ago. He has several I think.
To be clear, you are talking about the shuttle valve/junction block where severa
l brake lines and the brake light switch connect, not the pressure reduction val
ve in the front brake circuit.
Mike
Sent from my iPad
On Mon, Jan 14, 2019 at 5:47 PM Mike Drew <[6]MikeLDrew at aol.com> wrote:
Joe,
I had one I sold to Larry Stock years ago. He has several I think.
To be clear, you are talking about the shuttle valve/junction block
where several brake lines and the brake light switch connect, not
the pressure reduction valve in the front brake circuit.
Mike
Sent from my iPad
> On Jan 14, 2019, at 14:43, Joe Jaffoni <[7]427390 at gmail.com>
wrote:
>
> 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
([1][8]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. [9]https://panterapartsusa.myshopify.com/products/01316A
> _______________________________________________
>
>
> Detomaso Email List is not managed by POCA
> Posted emails must not exceed 1.5 Megabytes
> DeTomaso mailing list
> [10]DeTomaso at server.detomasolist.com
> [11]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.
References
1. mailto:427390 at gmail.com
2. https://www.ebay.com/itm/163424707842
3. mailto:MikeLDrew at aol.com
4. mailto:427390 at gmail.com
5. https://calponycars.com/1964-1973-classic/191-bra-653-041.html
6. mailto:MikeLDrew at aol.com
7. mailto:427390 at gmail.com
8. https://panterapartsusa.myshopify.com/products/01316A
9. https://panterapartsusa.myshopify.com/products/01316A
10. mailto:DeTomaso at server.detomasolist.com
11. http://server.detomasolist.com/mailman/listinfo/detomaso
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