you probably don't need to trim it, but if you wish

I went to edit my reply and somehow this got double posted? Oh well. Hopefully the exhaust problem is solved. Sorry about the double post.

It could use a bit more trimming, but here's the gasket I made for this.

The metal in between the gasket material is fairly thick, and I think it'll be fine as is. I'm not going to put any sealer on it at all.

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if it's not specifically for use in a high temp exhaust enviroment it's a bad choice, and that copper stuff is for use with a gasket, like ahead gasket.

if you just use the exhaust gasket material it'll work fine.

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dunno, the stuff i've seen comes in a tube that you squeeze out and smear on. could be the same stuff

You mean the copper spray called Hylomar? The stuff you spray on head gaskets?

copper "loctite" is a good thing to put on exhausts joints. its meant to stand up to the heatand if you put a bit of that on each side of the gasket then you should be home and hosed.

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I hear that. Being right down the street from a hydraulic supply place has saved me many times. We also have a metric aircraft hardware place nearby too ;)

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One of the reasons I pulled the engine is to fix the oil leaks and fix the exhaust leak that was coming from that joint. (It was pretty loud and drove me crazy)

I found a sheet of proper exhaust gasket material, and have made a nice template for cutting out the gasket. I also chased the threads with a 6mm X 100 tap, and got all new bolts, so I'm reasonably confident that the exhaust leak problem will be solved.

Luckily, I have some good hot rod shops in the area, and was able to find the right gasket material fairly easily.

Thanks again for your help.