Exhaust Manifold Gaskets D1 V8

[scruffy]

Hi Everyone, Had reason to remove the right hand ex manifold during the removal of the starter motor recently. [ had to cut off the allen head bolt heads] Upon replacing the exh manifold I had to use the old gaskets [you know, Murphys law, Saturday afternoon and nothings open and if it can go wrong it will ] and noticed that either the gaskets or manifold had a lot of exh black on parts of them. The gaskets did not line up with the manifold ports or the head ports. I am guessing that this could be the/a reason for the spark plugs showing a running rich state of tune as the ports were approx 1/2 blocked. Anyway, new gaskets on hand so will change them over and check the left hand exh manifold at the same time. Hoping this will cure my apparent running rich problem. Anyone else had this problem and what do I do if the new gaskets dont line up???
Any ideas?? Bob

[BigJon]

If the new gaskets don't line up take them off and refit the correct way.

[PhilipA]

Ditto, they are back to front.

Newbies error. I wonder how many cars are going around gutless because of this!!!!LOL.

I note there are now 2xport gaskets and 4xport gaskets available, so that should cut it down.

made my day.
Regards Philip A

[bee utey]

Permaseal brand part no. EM45 are one piece, makes fitting so much easier. You can cut out the bridges afterwards if you need to. Yes, I've seen my share of backwards fitted 4 piece jobbies too.

[400HPONGAS]

Thats strange , most mechanics would never fit the exhaust gasket in the first place . Leave them off or out !!! Just use a good High temp silicon sealer , The type that says its harmless to O2 sensors .

[Blknight.aus]

you mean the stuff thats not rated to more than 300 deg c?

great if you dont put it on the main manifold but useless onthe manifold.

[400HPONGAS]

Your looking at the wrong stuff 700C (although the manifold is no where near the Exhaust gas Temp ) is more like it .Its a permatexblue or black high temp stuff that says quite clearly that its suitable for O2 sensors . Now logically if it were suitable for O2 sensors then where would you be using it ? (perhaps inlet manifold/ valley seals , if you slapped on heaps and it got through the valves and was burnt up in combustion ?)Especially good for Alloy head to steel (cast as well) manifolds / extractors/headers . It will simply char , and wont be blown out by exhaust gas pressures .

[chazza]

I have had the high-temp silicone on my manifolds for two years and it has worked superbly!

Cheers Charlie