The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - inline 6 exhaust flange ("donut") frequently failing

cell · 06-15-2007, 04:41 AM

So I have been having a recurring problem with my 292 inline 6. Where the exhaust manifold connects to the exhaust pipe, there is a circular flange (a "donut") and it has been failing about once per month. And when it goes out -- boy this truck is as loud as a dragster.

Has anyone else experienced this? Maybe my engine mounts are going out and the engine is moving too much, putting strain on that flange? Maybe my exhaust pipe is mounted too securely (maybe I need more of those exhaust hangers with rubber joints?).

I just recently learned to weld, so I think ultimately my solution will be to create my own set of headers.

sorry no pics -- its late (or early...).

06-15-2007, 04:41 AM	#1
cell Active Member Join Date: Nov 2005 Location: Austin Posts: 217	inline 6 exhaust flange ("donut") frequently failing So I have been having a recurring problem with my 292 inline 6. Where the exhaust manifold connects to the exhaust pipe, there is a circular flange (a "donut") and it has been failing about once per month. And when it goes out -- boy this truck is as loud as a dragster. Has anyone else experienced this? Maybe my engine mounts are going out and the engine is moving too much, putting strain on that flange? Maybe my exhaust pipe is mounted too securely (maybe I need more of those exhaust hangers with rubber joints?). I just recently learned to weld, so I think ultimately my solution will be to create my own set of headers. sorry no pics -- its late (or early...).