Depending on the location and size of the crack, you may be able to have it welded shut or you may have to replace the manifold.
Yes on the exhaust manifolds but the cat should either be welded or bolted on after your Y pipe then goes to your cat!
The exhaust manifold needs to have a gasket in place to help seal the juncture between the manifold and the engine. After the gasket and gasket sealer are in place, tighten the bolts for the exhaust manifold. The exhaust pipe can then be replaced on the new exhaust manifold.
The purpose of the exhaust manifold is to connect the exhaust ports on the cylinder head to the exhaust pipe.
exhaust manifold is where exhaust pipe hooks to engine!
In the exhaust manifold behind the engine.In the exhaust manifold behind the engine.
I have an 87 Ranger and it is welded on.
In the exhaust manifold on the back of the engine.In the exhaust manifold on the back of the engine.
there should be two (or four, if you have a dual exhaust set up). one just before and one just after the catalytic converter welded into/onto the exhaust. There will only be one, it is in the manifold on the back if the engine.
You will need to remove the exhaust manifold retaining bolts in your 1993 Chevy Astro. Remove the exhaust manifold. Remove the exhaust manifold gasket and clean the surface. Reverse the process to install the new exhaust manifold gasket.
Screwed into the exhaust manifold.Screwed into the exhaust manifold.
Where is the leak coming from. Most likely you will need to replace the exhaust manifold gasket which will require removing the exhaust manifold.