[DeTomaso] Urgent brake booster replacement

[B. SEIB]

Mike
I had ideas about using a 308 Ferrari booster myself a while back, but when
I looked at my friend's 308, it was a 4-stud model that looked otherwise the
same as our Pantera ones. 

So...I bought a new booster, sold to me as a Pantera one. It came and it
also had 4 mounting studs in a square pattern but was brand new. It is also
slightly larger in diameter, but you wouldn't notice that visually unless
they were side by side. Our Pantera master cylinder fits perfectly. I didn't
want to modify my existing pedal box casting, so I bought a spare on ebay,
did a little alum welding and machining and installed it. I had to make a
few small adjustments to the surrounding sheet metal, but nothing
noticeable. It works great.

I was told it was actually a Grp 3 or 4 model. I now have doubts about that.
I've never seen the back of a GT5 booster (or Grp 3 Grp4).
Does anyone actually know if any Pantera or DeTomaso used this larger 4-stud
booster? Or is it a Ferrari one perhaps?
I think it may be a bit larger than the 308 model booster though.
Photos attached.

Barry

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Mike Drew MikeLDrew at aol.com 
Fri Apr 14 17:49:47 EDT 2017 

 AJ 

The booster is Pantera-specific as far as I know. I worked on a car recently
that had what appeared to be a stock booster, but upon examination I
discovered it had four studs on the back instead of three. A previous owner
had butchered the car to install it by drilling two new holes in the booster
mounting bracket. 

I think you guys are on the trailer for the weekend....

Mike

Sent from my iPhone

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jderyke at aol.com jderyke at aol.com 
Fri Apr 14 18:03:47 EDT 2017 

 I'm told the 308-series (308-GT4, 328, etc) Ferrari booster is a bolt-on
duplicate of ours. They come as a complete assembly and should not be
excessively high priced. Not sure if the F-car master cylinder swaps onto
Pantera brake lines, but if the OEM master cylinder is good, it will bolt
onto the new booster. Good luck, Asa Jay- J Deryke


-----Original Message-----
From: Asa Jay Laughton <asajay at asajay.com>
Sent: Fri, Apr 14, 2017 2:38 pm
Subject: [DeTomaso] Urgent brake booster replacement


My Pantera friends,

We have a Pantera at the race track that has lost the vacuum booster.A
Does anyone know an off-the-shelf replacement that will work?A Even if
it comes from a Ferrari dealer?A We're trying to find one today, in
order to keep racing.

All help greatly appreciated.A Racing at Portland International
Raceway.

Asa
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