Author Topic: Header installation  (Read 3590 times)

jdv69z

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Header installation
« on: May 02, 2007, 03:08:26 PM »
I am going to install a new set of headers in my 69 Z in the near future, and wonder what is current thinking regarding gaskets, etc. in order to get a good seal, minimizing exhaust leakage. It's alway been a headache. What's working for others?

Jimmy V.
Jimmy V.

camaromikey

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Re: Header installation
« Reply #1 on: May 02, 2007, 04:37:44 PM »
the aluminum gaskets i feel unless the headers have a really thick flange, they warp to EZ. I think the copper ones work the best

Jerry@CHP

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Re: Header installation
« Reply #2 on: May 03, 2007, 01:56:48 AM »
We use the dark gray heavy-duty Mr. Gasket header gaskets.  Have never had a problem with them and they seal well.

JM

jdv69z

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Re: Header installation
« Reply #3 on: May 03, 2007, 12:24:03 PM »
Thanks for the input.

Jimmy V.
Jimmy V.

GaryL

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Re: Header installation
« Reply #4 on: May 03, 2007, 02:33:33 PM »
I have used the Felpro gaskets that come in the engine kits. The type that is perforated metal on one side. They have never leaked. Looks the best since they are 3 piece. If you use Thorley headers the backdrive can be made to work.
« Last Edit: May 04, 2007, 03:50:33 AM by GaryL »
Gary

Lemans Blue X33. DZ, M20, manual steering. Only BU code rear end is original.

JohnZ

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Re: Header installation
« Reply #5 on: May 03, 2007, 04:59:52 PM »
The header flange bolts WILL loosen and cause exhaust leaks/gasket failure, unless you check them regularly or use either Stage 8 locking bolts or drilled bolts and safety-wire them.
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sd1968z28

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Re: Header installation
« Reply #6 on: May 03, 2007, 08:52:35 PM »
get your headers mounting surfaces milled then use ultra copper with quality bolts and lockwashers, and forget it.  no leaks, nothing to ever tighten, i have been doing this for years and it works!

jdv69z

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Re: Header installation
« Reply #7 on: May 04, 2007, 03:25:36 PM »
 Hi sd1968z28,

With milled flanges, are you using only ultra copper and no gasket, correct?

Thanks,

Jimmy V.
Jimmy V.

sd1968z28

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Re: Header installation
« Reply #8 on: May 04, 2007, 03:46:09 PM »
yes no gasket.

zdld17

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Re: Header installation
« Reply #9 on: May 09, 2007, 08:02:36 PM »
I have been using the black UltraSeal Mr Gasket for many years,  they have served me well.  For my Thorleys, I use the #5907  . 
Don Dabbs