Fox Header Gaskets

[Blackpony]

i like the percy's, reused mine at least a dozen times with 0 leaks.

[A+]

Factory fox's had headers Not manifolds. Well at least the 87-93 did

Oh, I thought that's what we were talking about. Either way, ive never had problems with either.

[sonicbluegt]

Copper. Reused several times no problems

[thesource]

Ultra Copper rtv.

Yep. Far better than any gasket you are going to find and a lot cheaper too.

[91CoupeMike]

Copper rtv

And yes you have to tighten the bolts every now and again. Not a big deal though.

I haven't had too. I used the bolts with the lock wires.

[351Coupe]

i like the percy's, reused mine at least a dozen times with 0 leaks.

Same here. I use them on my 68 and my 90. Great product.

[thesource]

Copper rtv

And yes you have to tighten the bolts every now and again. Not a big deal though.

Use 1" header bolts and usually you have hell getting the damn headers to break loose when you are ready to remove them. I learned about using Ultra Copper RTV from another Mustang guy who was big into turbos and had trouble getting manifolds to seal up.

[90MarkVII]

Did you mean 1415? http://www.jegs.com/i/Fel-Pro/375/1415/10002/-1

Yup. Transposed the numbers.

[FoxBodyNick]

I haven't had too. I used the bolts with the lock wires.

Damn about once every 2 months I go out there when I start to hear a slight exhaust leak and I am able to tighten one with my fingers that has backed off haha. I have a 7/16ths wrench that has a grinded down open end so it is easy to tighten them up compared to normal so I don't mind.

I was just meaning with the BBKs I have had to tighten them up not due to the copper rtv. When I installed mine I used a gasket with just a tad of copper rtv coated on it if I remember correctly. I had a terrible time with hooker longtubes and tightening them up in high school on the backside near the firewall on my Camaro (might have been warped idk), so I made sure I would be good to go with these.

[payne5757]

Copper RTV

Sent from my not soo far away Galaxy...

[ktm300hater]

Autozone has some multilayer aluminum gaskets that I use on headers. They work great. flame me if need be. And when you do remove them they come off clean

[351Coupe]

Autozone has some multilayer aluminum gaskets that I use on headers. They work great. flame me if need be. And when you do remove them they come off clean

Those are the Percy's that me and Blackpony use.

[90MarkVII]

Another piece of advice....
Get up off your wallet and order a set of ARP stainless 5/16 (8mm) hex head header bolts.
Makes installing/removing headers a whole lot less frustrating and time consuming.

[red95gts]

If you have warped flanges or a turbo car, look at Remflex gaskets. 100% graphite and will conform to just about any imperfection. Great gasket.

I agree that copper RTV works well, but the trick is getting the header in place without fucking up the RTV bead you just laid. Particularly on a turbo car, it's easier said than done.

[90MarkVII]

If you have warped flanges or a turbo car, look at Remflex gaskets. 100% graphite and will conform to just about any imperfection. Great gasket.

I agree that copper RTV works well, but the trick is getting the header in place without fucking up the RTV bead you just laid. Particularly on a turbo car, it's easier said than done.

This is where header studs would come in handy.