[DeTomaso] Hall Header Donuts

Sat Apr 22 15:32:17 EDT 2017

Dear Craig,

                      I *like* it!      ..and I just happen to know an
old-school muffler guy who could do that modification.   Most excellent.   

                                             Warmest regards,  Chuck Engles

From: Craig Campman [mailto:ccampman at cox.net] 
Sent: Saturday, April 22, 2017 12:39 PM
To: cengles at cox.net; jderyke at aol.com; bill at incendium.com
Cc: detomaso at server.detomasolist.com
Subject: Re: Hall Header Donuts

Hi Chuck,

I also have the Hall headers and muffler combo and have fought for years
with the donut gaskets squeezing out and causing exhaust leaks. Last year
while at a local muffler shop known for great work, the owner heard my tale
of woe and created two short tubes to keep the donut centered. He cut two
short lengths of tube with an OD to fit in the donut, and then used his
machine to adjust the diameter of half the length of tube so it would slide
into the pipe that goes from the header flange to muffler. Once inserted
into the pipe, the donut goes on and the assemble is bolted to the header
with the original Hall flange hardware.

I have been running this setup for the past year and the donuts stay in
place. I have attached four photos showing the small tube and application.
Although it reduces the header flange cross section a bit, the tradeoff of
not having constant exhaust leaks at the donut is worth the price of
admission to me.

Regards,

Craig Campman

Red '73  #5303

------------------------------

Message: 6
Date: Fri, 21 Apr 2017 18:50:52 -0500
From: "Charles Engles" <cengles at cox.net>
To: <jderyke at aol.com>, <bill at incendium.com>, <byrdjf at embarqmail.com>,
            <detomaso at detomasolist.com>
Subject: Re: [DeTomaso] Techno question: setting the engine brace bar
            properly
Message-ID: <002701d2bafa$1cc5c880$56515980$@cox.net>
Content-Type: text/plain; charset="utf-8"

Dear Jack,

                 I understand.   These seasoned and vintage (!) donut
exhaust gaskets tolerated mating the Hall Big Bores to the stock
Pantera/ANSA exhaust for about fifteen years.  They have survived me
dropping them a few times whilst installing them with the HBB exhausts.
They seem robust.  I shall watch them with cat like vigilance.

                            Warmest regards,  Chuck Engles

From: jderyke at aol.com [mailto:jderyke at aol.com] 
Sent: Friday, April 21, 2017 1:28 PM
To: cengles at cox.net; bill at incendium.com; byrdjf at embarqmail.com;
detomaso at detomasolist.com
Subject: Re: [DeTomaso] Techno question: setting the engine brace bar
properly

Chuck, you can try the doughnuts. But when I ran a Hall big-bore set a
decade ago, the leverage from the mufflers against the header flanges was
such that the doughnuts fractured, then pounded out in a few thousand miles.
I substituted flat gaskets, then sold the mufflers & connecting pipes. Good
luck- J Deryke

-------------- next part --------------
   Dear Craig,

                         I *like* it!      ......and I just happen to know
   an old-school muffler guy who could do that modification.   Most
   excellent.

                                                Warmest regards,  Chuck
   Engles

   From: Craig Campman [mailto:ccampman at cox.net]
   Sent: Saturday, April 22, 2017 12:39 PM
   To: cengles at cox.net; jderyke at aol.com; bill at incendium.com
   Cc: detomaso at server.detomasolist.com
   Subject: Re: Hall Header Donuts

   Hi Chuck,

   I also have the Hall headers and muffler combo and have fought for
   years with the donut gaskets squeezing out and causing exhaust leaks.
   Last year while at a local muffler shop known for great work, the owner
   heard my tale of woe and created two short tubes to keep the donut
   centered. He cut two short lengths of tube with an OD to fit in the
   donut, and then used his machine to adjust the diameter of half the
   length of tube so it would slide into the pipe that goes from the
   header flange to muffler. Once inserted into the pipe, the donut goes
   on and the assemble is bolted to the header with the original Hall
   flange hardware.

   I have been running this setup for the past year and the donuts stay in
   place. I have attached four photos showing the small tube and
   application. Although it reduces the header flange cross section a bit,
   the tradeoff of not having constant exhaust leaks at the donut is worth
   the price of admission to me.

   Regards,

   Craig Campman

   Red '73  #5303

   [cid:image001.jpg at 01D2BB75.3B39D7E0]
   [cid:image002.jpg at 01D2BB75.3B39D7E0]
   [cid:image003.jpg at 01D2BB75.3B39D7E0]
   [cid:image004.jpg at 01D2BB75.3B39D7E0]

   ------------------------------
   Message: 6
   Date: Fri, 21 Apr 2017 18:50:52 -0500
   From: "Charles Engles" <[1]cengles at cox.net>
   To: <[2]jderyke at aol.com>, <[3]bill at incendium.com>,
   <[4]byrdjf at embarqmail.com>,
               <[5]detomaso at detomasolist.com>
   Subject: Re: [DeTomaso] Techno question: setting the engine brace bar
               properly
   Message-ID: <[6]002701d2bafa$1cc5c880$56515980$@cox.net>
   Content-Type: text/plain; charset="utf-8"
   Dear Jack,
                    I understand.   These seasoned and vintage (!) donut
   exhaust gaskets tolerated mating the Hall Big Bores to the stock
   Pantera/ANSA exhaust for about fifteen years.  They have survived me
   dropping them a few times whilst installing them with the HBB exhausts.
     They seem robust.  I shall watch them with cat like vigilance.
                               Warmest regards,  Chuck Engles
   From: [7]jderyke at aol.com [[8]mailto:jderyke at aol.com]
   Sent: Friday, April 21, 2017 1:28 PM
   To: [9]cengles at cox.net; [10]bill at incendium.com;
   [11]byrdjf at embarqmail.com; [12]detomaso at detomasolist.com
   Subject: Re: [DeTomaso] Techno question: setting the engine brace bar
   properly
   Chuck, you can try the doughnuts. But when I ran a Hall big-bore set a
   decade ago, the leverage from the mufflers against the header flanges
   was such that the doughnuts fractured, then pounded out in a few
   thousand miles. I substituted flat gaskets, then sold the mufflers &
   connecting pipes. Good luck- J Deryke

References

   1. mailto:cengles at cox.net
   2. mailto:jderyke at aol.com
   3. mailto:bill at incendium.com
   4. mailto:byrdjf at embarqmail.com
   5. mailto:detomaso at detomasolist.com
   6. mailto:002701d2bafa$1cc5c880$56515980$@cox.net
   7. mailto:jderyke at aol.com
   8. mailto:jderyke at aol.com
   9. mailto:cengles at cox.net
  10. mailto:bill at incendium.com
  11. mailto:byrdjf at embarqmail.com
  12. mailto:detomaso at detomasolist.com
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