[DeTomaso] Some FIA Group 3 brake questions - circa 1973

[Julian Kift]

It is quite an ordeal to break down the rear hubs each time to swap rotors and axle cinch nuts are designed as single use. I wonder does th FIA homologation (or did Pantera's of the era) allow use of outboard discs?


Julian

________________________________
From: DeTomaso <detomaso-bounces at server.detomasolist.com> on behalf of Steve Lisa <stevelisa at patentit.com>
Sent: Monday, April 17, 2017 2:58 PM
To: detomaso at server.detomasolist.com
Subject: [DeTomaso] Some FIA Group 3 brake questions - circa 1973

This is my first post, so I hope I get it right.  Let me know if I broke
etiquette.

So, we confirmed this weekend running in the Oregon SCCA Vintage group at
PIR, that the original Pantera brakes are indeed lacking.  Aside from brake
issues, Asa Jay's old car ran well.

The issue is that I am required to run the stock front and rear calipers if
I want the car to be "dated" under the FIA Group 3 rules as of "1973."  As
best I can tell (and maybe I am wrong), the "big" calipers were not
approved in Group 3 until 1974.  However, it also appears, as best I can
tell, that the 1973 FIA Group 3 rules allowed vented front and rear rotors
in place of the original non-vented rotors.  Unfortunately, slotted rotors
are not allowed.

I happily just bought two sets of Mike Drew's recently sourced
vented/slotted rotors, which I will run on the front for now.  Except for
snooty events, there will be no issues doing so.  But, I have a few
questions for the experts here about some longer term concerns:

   1. I eventually need to find vented but non-slotted front and rear
   rotors for the Pantera, as close as possible to what was run in the FIA
   Group 3 in 1973.  Any ideas on where to find vented front and rear rotors
   that are equivalent to the 1973 FIA Group s rotors?
   2. I would like something improved in place of the stock rear rotors
   while I am sourcing the proper vented rotors circa 1973.  Any ideas?
   3. What are the best race front and rear pads to run in the original
   calipers, and where do we get them?  I am guessing Porterfield?

Also, I want to again thank all those that tried to help us out last
weekend when the Booster failed.

Regards,

S
teve Lisa

SN 5533

Steve Lisa
SN 5533
-------------- next part --------------
   It is quite an ordeal to break down the rear hubs each time to swap
   rotors and axle cinch nuts are designed as single use. I wonder does th
   FIA homologation (or did Pantera's of the era) allow use of outboard
   discs?

   Julian
     __________________________________________________________________

   From: DeTomaso <detomaso-bounces at server.detomasolist.com> on behalf of
   Steve Lisa <stevelisa at patentit.com>
   Sent: Monday, April 17, 2017 2:58 PM
   To: detomaso at server.detomasolist.com
   Subject: [DeTomaso] Some FIA Group 3 brake questions - circa 1973

   This is my first post, so I hope I get it right.  Let me know if I
   broke
   etiquette.
   So, we confirmed this weekend running in the Oregon SCCA Vintage group
   at
   PIR, that the original Pantera brakes are indeed lacking.  Aside from
   brake
   issues, Asa Jay's old car ran well.
   The issue is that I am required to run the stock front and rear
   calipers if
   I want the car to be "dated" under the FIA Group 3 rules as of "1973."
   As
   best I can tell (and maybe I am wrong), the "big" calipers were not
   approved in Group 3 until 1974.  However, it also appears, as best I
   can
   tell, that the 1973 FIA Group 3 rules allowed vented front and rear
   rotors
   in place of the original non-vented rotors.  Unfortunately, slotted
   rotors
   are not allowed.
   I happily just bought two sets of Mike Drew's recently sourced
   vented/slotted rotors, which I will run on the front for now.  Except
   for
   snooty events, there will be no issues doing so.  But, I have a few
   questions for the experts here about some longer term concerns:
      1. I eventually need to find vented but non-slotted front and rear
      rotors for the Pantera, as close as possible to what was run in the
   FIA
      Group 3 in 1973.  Any ideas on where to find vented front and rear
   rotors
      that are equivalent to the 1973 FIA Group s rotors?
      2. I would like something improved in place of the stock rear rotors
      while I am sourcing the proper vented rotors circa 1973.  Any ideas?
      3. What are the best race front and rear pads to run in the original
      calipers, and where do we get them?  I am guessing Porterfield?
   Also, I want to again thank all those that tried to help us out last
   weekend when the Booster failed.
   Regards,
   S
   teve Lisa
   SN 5533
   Steve Lisa
   SN 5533