Re: Has anyone repaired a gasket surface on an exhaust manifold

Posted by tsherry On 2022/2/3 23:20:21

I've used JB weld on two Ford 8N exhaust manifolds. The oldest repair is 15 years, the newest is about 8. The gasket had eroded and exhaust gasses eroded the manifold over years of use by the prior owner. Took me a couple of layers of JB weld, then some sanding on my belt sander. My second N had a bad casting by the look of it; much easier repair.

Have had zero issues with it ever since. I use both tractors pretty heavily; one in the summer, the other in the winter.

Also used JB weld on two badly scored air compressor cylinder bores; I got the compressor for free; it had been sitting outside for years. New gaskets and air filter, cleaned up the motor, good to go after the cylinder work. That's five years ago; use that compressor regularly.

I have heard of several steam engines (1870-90 version, think huge farm tractors) that had their bores repaired the same way. That's how I discovered you could use JB weld in unexpected ways...