manifold

A couple of recent threads here have once again raised the questions of the various exhaust manifolds available for our engines. It seems info here is quite scattered and at times incorrect. Thought I would try to do some research and consolidate it into one thread. Special thanks to Andrew...

I purchased a two 4-2 exhaust manifold gasket for my new custom 2-1 downpipe only to find the secondary port diameters are smaller than the manifold I purchased. The manifold port diameters are between 33-35 mm each (slightly oval shape) yet the gasket diameter is 33. I feel this would greatly...

A continuation of this thread: https://xwebforums.com/forum/index.php?threads/cast-iron-4-2-exhaust-manifolds.32840/page-2#post-278925 I am getting the 4-2 manifold flange machined out of 304 SS hopefully in the next week. Does anyone know what grade SS the OEM muffler is made of? I do know it...

Greeting all, My next project consists of converting my original California emissions style exhaust to something using the 4-2 manifold. My car came with a 4-1 manifold, cat, and muffler. I have since replaced the cat and would actually like to keep it (tree hugger at heart). I purchased a 4-2...

I've got a reman 32 DMTR 200, the stock carb for a '74 X for sale. It's still in the box. It is very clean (should be it's reman), but I did have to do a little work on the choke pull off pot. The chokes are 22mm each so it can't flow as much as a 34 DMTR, but don't be fooled - this carb will...