Exh gasket cond. Q….

[hardtimes]

Any thots as to what would/ caused the conditions of these two gaskets.

Besides them being cheapest examples Ive seen.
Maybe can make out ‘cheeriots’ written on one side … lol

[chrs1961815]

To be burned that bad I would say that the exhaust manifold is not flat with the intake meaning it is further away from the block.

[Synchro909]

If the intake manifold is not the one originally fitted to that exhaust manifold, there will almost certainly be a mismatch. By now, most exhaust manifolds have become so warped that they have been replaced. That can lead to this situation. If you have the two manifolds machine coplanar while still bolted together, I think your problems will be over.
You can do a quick check with a straight edge held against the surface that bolts up to the block. You shouldn't see any more than a glimmer of light anywhere.

[Jacksonlll]

They do fail fairly often, and need changing. Keep those four bolts tight.

[hardtimes]

Originally Posted by Jacksonlll

They do fail fairly often, and need changing. Keep those four bolts tight.

I agree regarding … maintaining….proper torque on the four nuts (and special washers) involved !

It is worth telling that these four nuts were NOT equally tight !!
Like most opinions, I see that there are differing .. methods/numbers for manifold torquing of these four nuts.

My own belief is that an owner should periodically check and reset the manifold(s) torque, for various reasons.

[redmodelt]

Sponsored Links (Register now to hide all advertisements)

Bet it was not running any gland rings in the exhaust?

[Dick M]

I agree that the gaskets show the intake and exhaust manifolds need to be surfaced. Take both manifolds, bolted together, to a machine shop and have them surfaced creating an equal inline surface height. This will ensure an even mounting of the manifolds to the block.