I was reading some forum topics from 2003 and 2011 about exhaust/intake manifolds and gasket options. If I read correctly, a warped exhaust manifold doesn't work well with the glands/copper rings combo and the 3 in 1 style are better suited for that situation. I've noticed a major T parts supplier offers a copper clad 3 in 1, with glands, and an asbestos-esq 3 in 1 option, without glands.
The manifold I just pulled off does appear warped as the port closest to the exhaust pack nut is lower than the rest. However, there were glands, though severely deteriorated, in all the exhaust manifold parts.
Is there a better option to choose between the copper or asbestos-esq 3 in 1? And should I try to use glands, again?
Thank you for your time,
Maybe somebody near you has a manifold jig and the experience to use it. If you can straighten the manifold, you can use the gland rings.
If I am not mistaken the gasket sets for T's come with flat manifold gaskets.
I believe they come with the flat asbestos gaskets because most of the manifolds are warped to a degree.
The flat gaskets do work. I guess its just the idea of knowing that the manifolds are warped and things arent 'perfect'.
Flat gaskets allow the manifolds to seal warped or not without worrying about getting the ports in alignment.
If things are to much out of alignment then the choice becomes to straighten the manifold or to buy a new one.
I think its better to buy a good or new one than to spend the time and money straightening it.
I straightened mine but for the cost of the oxygen I could have spent a little more and bought a new one.
To each his own on this one.
All depends on how badly warped.
The flat white (asbestos fake) ones can be made to work, try to fit the steel rings (glands) into the ports, if you can get all fitted that is best, if a few ports don't then it will usually work in most cases....these white ones won't last for years, but do work.
For me, the better are the 'new' flat gaskets that are a sandwich of the white stuff, with copper on both sides..the metal will make these last longer. Again, try to fit as many gland rings as you can. The sandwich flat gasket will crush around the ports of the manifold and seal to the block pretty good.
Hints on using the copper sandwich type is to trim the notches to clear the manifold studs, the notch is a bit too tight and will keep the gasket from seating flush if it bumps on the manifold studs.
And take care in fitting the gland rings, these are cheap steel, circular, and usually need filing or trimming to seat snug in the recess of the manifold and block holes, be sure to really clean the seat area in the ports. That will let the gland rings stay put. And you sometimes have to grind the thickness down, so that the gland rings don't stand proud off the block and manifold ports, that will make a gap and you have leaks.
With fresh machined surfaced ports, and a new manifold, the original individual Ford style crush type copper gaskets, and steel gland rings are the best.