[DeTomaso] Brake booster

[Asa Jay Laughton]

I was incorrect.  I found a flaw in my test setup.  Once corrected I found the booster -is- working properly.  Re-installed to the car and using the same vacuum pump starting in the engine compartment yields a good feel now.  And the booster holds four more pedal presses after vacuum is removed.

Now that I’m comfortable it all works, I need to talk the owner into an on-board make up vacuum pump.  Their engine vacuum at idle is between 7-10 in.  That’s not enough to properly drive the booster effectively.

For what it’s worth, I used an off the shelf vacuum pump used on many new cars today.  I attached a vacuum gauge on a T, and it draws up to 24” of vacuum which works well for testing.
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My error in earlier testing was not properly sealing the front of the booster without the master in place.  I also had to clean the front seal and check valve which both had two different gasket sealers.  This kind of work does not instill confidence in the Pantera vendor who worked on this car.

We have a happy vacuum booster now.  :)

I figured boosters were going to be a vendor specific part but I had to ask.

Thank you,
Asa  Jay

Sent via radio waves

> On Jun 30, 2024, at 16:14, Mike Drew <mikeldrew at aol.com> wrote:
> 
> Asa Jay,
> 
> Pantera boosters are NOT found at O’Reilly or NAPA. While they are not exactly Pantera-specific, they are not found off. They are shared with various Ferraris etc. Which is pointless info.
> 
> Dennis Quella sells remanufactured boosters on an exchange basis. Call him…
> 
> Mike
> 
> 
> Sent from my iPad
> 
>> On Jun 30, 2024, at 14:41, Asa Jay Laughton via DeTomaso <detomaso at server.detomasolist.com> wrote:
>> 
>> Hi All,
>> The vacuum brake booster on this Pantera appears to be shot.  I have removed it from the car and attached a vacuum pump capable of pulling 24 inches.  Once attached to the pump, the booster shows about 1 or 2 inches all through the travel.  The input shaft is just as difficult to push with and without vacuum applied.
>> 
>> The booster is “clean” without any markings whatsoever.  It looks like an original to me but I don’t have another here to compare.
>> 
>> <image0.jpeg>
>> <image1.jpeg>
>> 
>> 
>> Question is which vendor is the original source or is it something I can get at a local parts house?
>> 
>> Thank you,
>> Asa Jay
>> 
>> Sent via radio waves_______________________________________________
>> 
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