Exhausts leak

[bhsmush]

Hey guys,
I have a 351W and am having leaks in the last part of the exhaust closest in to the firewall. I changed the gasket out and got some red silicone and put the exhaust headers back on, but there is still an exhaust leak in both the last cylinders. What do I do???? Help???

V/R

Brad

[spd4me]

The paper style exhaust gaskets seam to burn out at the rear of engine. I looked at a copper one but the ports were rounded in the corners and not square like my heads. I ended up getting an aluminum exhaust gasket from Mr. Gasket. They fit perfect and have square cut holes. Had to re-tighten bolts a couple times but no problem.
Bob

[scott h]

you may also want to try going to an allen head bolt. the regular hex haed bolts are so close to the header you really can't get a wrench on them. any good steel reinforced gasket should hel,p sealant will just get cooked and blown out by the exhaust pressure.

[pgermond]

I moved to copper gaskets and have never regretted it.

[Aggressor]

Since the engine upgrade 12,000 miles ago I'm having exhaust gasket failures on about an annual cycle (FelPro's). I attended Bruce Larsons Drag-Fest last week end and talked to some of the drag racers there. Several recommended copper gaskets with the qualifier that they be annealed prior to installation. I understand annealing aluminum to soften it for metalworking as working it will compact and toughen the aluminum. I didn't get any definitive answers to the physics behind annealing copper gaskets except that in a dead-soft state the copper seals better.

Any thoughts on annealing copper exhaust gaskets??

-Geary

[Aggressor]

Since the question posted above I found an ad for Annealed Ford FE Gaskets.
I clipped it and added it below.


Annealed Copper Exhaust Gaskets for Ford 352-427 FE
Soft Copper Header Gaskets for Ford 390-427 FE. The port location in this gasket (for passenger vehicles) is higher relative to the bolts than p/n 34286. (see also p/n 4034, 4134, 4324) Gasket...
List Price: $59.95
Price too low to show. To see price, add item to cart.
Compare At: $59.95

Here is the web page link.

http://www.scegaskets.com/Ford/352-4...orLanding/true

-Geary