Exhaust mods, low tech

[Unkle Krusty]

Stock 318 exhaust manifolds. Right hand side had a flapper valves with a spring, to help with cold starts.
So, I removed that and plugged the holes where the shaft used to be, with two bolts.
Noticed the centre ports are not flush smooth. I will buy a new file and attempt to make this area smooth again.
Can post a pic later when it is dark to show indent more clearly.

 

[69Bee]

Don't worry about wasting time filing. You will never get a straight surface. Just use Fel-Pro exhaust manifold gaskets with the metal side to the manifold and you will be fine. I also spray copper coat on both sides of the gasket.

 

[Unkle Krusty]

Thank you 69Bee.
Have you seen my question about valve stem seals.
Posted it under an existing tnread of mine about Valves.