I had a set of pipes that got trashed in shipping, so I thought before I chunked them, I'd gut them out and show everyone what is inside them. I should mention that I cut them off with a chop saw in front of the 1st baffle before gutting them.
Working from the exit end in:
This is the baffle that is throughout the pipe- some have three, some have four. On the 1st one you can get to, the through pipe is centered, the rest are offset a bit.
Behind the last baffle is the converter (on the newer pipes- older pipes will not have this). The catalytic converter is the corrugated part in the center(ignore the rest of the photo). On an ungutted pipe, it would not have the indentions. That came from me just (recklessly) beating it out:
Next is the reducer. Where the welds are were a plate just like on the baffles:
There is a mesh screen that sandwiches a wrap of fiberglass matting/batting/wrapping against the outer chromed pipe. The 1st baffle is tack welded to the chrome pipe. the rest of the baffles are welded to the mesh.
The mesh and fiberglass can be removed. That requires getting the backing nuts that hold the mounting brackets on out of the pipes. It isn't easy to do without trashing the pipes. They are of this type, and if they spin, its almost impossible. They have to be drilled out to come out clean. These didn't come out clean, but then again, the pipes were trash anyway.
That should be everything in a stock pipe.
