|
Header gaskets
G'day all,
In my comprehensive kit from Pace, I received the headers plus Pace also kindly included an extra set of flanges in order that they can be mated to the cat converter collector. I didn't receive any gaskets however, so I wanted to know what others have done with regards to gaskets for their own headers to cats? Do you just buy the gasket sheet from Supercheap and cut it to shape yourself? Or get it laser cut? I did hear that some used purely the Permatex orange high temp gasket maker without the gasket sheet but I didn't think that it is rated up to the temperature of the headers. Any insight including sources would be greatly appreciated. Cheers, Sime |
I used "standard" three bolt flange gaskets because I used standard three bolt flanges.
|
Ben, our flanges are four bolt so that won't work unfortunately.
Have been searching the forum and others have said they had copper gaskets made up, and others have said they've simply used the Permatex Ultra Copper sealant only. The trick apparently, is to let the gasket material dry for 24 hours before starting. I'm just not sure that I would trust the sealant on its own. |
ive got 4 bolt flanges on mine they were off the shelf ones at the exhaust shop because they ran out of 3 bolts
so try an exhaust shop rob |
I have port adapters on my engine and the mating surface from the adaptor to the engine and the header to the adapter were both sealed solely by some red goop.
So that effectively two gasket sets replaced for each head. no leaks now I have to try to find a what the exhaust guy used - the permatex stuff looks like the go LoBelly |
I have used permatex copper for years with no issues.
|
Thanks. Apparently gaskets can be cut from 3000F Remflex gasket sheet or yes，there have been successful reports of people using Permatex Ultra Copper RTV silicone gasket maker.
Apart from the obvious fact that you need to have a flat mating surface between the flanges，the trick with the Permatex is to use a bead no greater than 1/8” and it's critical to wait 24 hours before starting the car. Follow these pointers and apparently (as Gav pointed out) it is successful. |
Sime, Derek said he was making the gaskets for the 3-bolt flanges using aluminium I think and a machine he has to press ripples into it. (Does that make sense - I've got no idea about this stuff). I presumed he was going to do the same for the 4-bolt flanges. Or did he say that was our problem?
|
the best stuff ive found over the yrs is the stag paste i use it instead of exahust manifold gaskets on our holden v8 race motor .ive put it around loose dipsticks on auto trans. the stuff is oil and fuel proof . best if you put it on and let sit for a while i always carry a tube in the toolbox . i will use it on the flanges on the cobra as well when the time comes
|
Quote:
The Remflex stuff is really good. We can get two sets out of a single 6" x 24" sheet (AUD$97.00. Could speak with Ultimate to find out what they'd charge to laser cut them for us. Universal 6" X 24" Remflex Exhaust Manifold Gasket Making Sheet REMGS16024 | eBay PS. Thanks Dean. So the Stag Jointing Compound handles header temps with no issues? |
Quote:
cheers dean |
Stag is great stuff, but sets like a rock.
How do you go getting stuff apart Deano? I have used it on threaded fittings etc and it seals every time, but doesn't clean up real well if you need to rework it. The permatex just scrapes off fortunately. |
Quote:
|
| All times are GMT -7. The time now is 11:24 PM. |
Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
The representations expressed are the representations and opinions of the clubcobra.com forum members and do not necessarily reflect the opinions and viewpoints of the site owners, moderators, Shelby American, any other replica manufacturer, Ford Motor Company. This website has been planned and developed by clubcobra.com and its forum members and should not be construed as being endorsed by Ford Motor Company, or Shelby American or any other manufacturer unless expressly noted by that entity. "Cobra" and the Cobra logo are registered trademarks for Ford Motor Co., Inc. clubcobra.com forum members agree not to post any copyrighted material unless the copyrighted material is owned by you. Although we do not and cannot review the messages posted and are not responsible for the content of any of these messages, we reserve the right to delete any message for any reason whatsoever. You remain solely responsible for the content of your messages, and you agree to indemnify and hold us harmless with respect to any claim based upon transmission of your message(s). Thank you for visiting clubcobra.com. For full policy documentation refer to the following link: