[DeTomaso] Pantera - Brakes - Proportioning Valve

[Sean Korb]

+1 on the power brakes.  I had a 1" master installed on my Pantera,
but when the power booster started to fail it was an intolarable
situation.  I went for an upgrade but a rebuild is fine too if you can
source it.

sean

On Fri, Dec 9, 2011 at 10:59 AM,  <MikeLDrew at aol.com> wrote:
>
> In a message dated 12/9/11 7 50 6, rickrows at hotmail.com writes:
>
>
>> What about the proportioning valve?    Remove, gut, leave as is?
>>
>
> Leave as-is.   Gutting or removing it will unbalance your braking system,
> making the front brakes overly sensitive.   For gentle driving it feels like
> an improvement, because the car stops with less pedal effort.   But if you
> seriously need to stop, now your front brakes lock prematurely and your rear
> brakes (which do a higher-than-normal amount of the car's overall braking
> due to the rearward weight bias) do little at all.
>
> Nobody else has mentioned that your power brake booster could be shot (or
> not getting proper vacuum).   The Pantera relies on power assist for proper
> braking; if that part of the system takes a dump, your leg doesn't have
> enough mechanical advantage to let the stock master cylinder lock the calipers.
>
> It's difficult to pinpoint the source of your problem from a distance, and
> it's annoying to spend money replacing a component, only to learn that it
> wasn't the offending one. :<(
>
> Mike
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-- 
Sean Korb spkorb at spkorb.org http://www.spkorb.org
'65,'68 Mustangs,'68 Cougar,'78 R100/7,'60 Metro,'59 A35,'71 Pantera #1382
"The more you drive, the less intelligent you get" --Miller
"Computers are useless.  They can only give you answers." -P. Picasso