[DeTomaso] Hall Header Donuts
Craig Campman
ccampman at cox.net
Sat Apr 22 13:39:28 EDT 2017
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 --------------
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:0CA4C0BB-3323-4E90-A869-70CF99BBCAC8 at san.rr.com]
[cid:8543C504-11DA-4090-8298-CE769CFA357E at san.rr.com]
[cid:D97002AC-1827-4677-9CD1-8A73021CBB9E at san.rr.com]
[cid:CA810E5B-FF33-4677-AC2D-2F12C78E12CE at san.rr.com]
------------------------------
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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