CRG Discussion Forum

Camaro Research Group Discussion => Maintenance => Topic started by: jdv69z on May 02, 2007, 03:08:26 PM

Title: Header installation
Post by: jdv69z 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.
Title: Re: Header installation
Post by: camaromikey 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
Title: Re: Header installation
Post by: Jerry@CHP 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
Title: Re: Header installation
Post by: jdv69z on May 03, 2007, 12:24:03 PM
Thanks for the input.

Jimmy V.
Title: Re: Header installation
Post by: GaryL 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.
Title: Re: Header installation
Post by: JohnZ 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.
Title: Re: Header installation
Post by: sd1968z28 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!
Title: Re: Header installation
Post by: jdv69z 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.
Title: Re: Header installation
Post by: sd1968z28 on May 04, 2007, 03:46:09 PM
yes no gasket.
Title: Re: Header installation
Post by: zdld17 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  .