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Hi folks,

I've got an '81 Jag 440 (Suzuki) and I melted a piston a couple of seasons ago. It scored the cylinder wall and cracked a hole in the crank case.

I'm pretty sure I can use some JB Weld to patch up the crank case but I don't know about the cylinder. Can these be bored or are they nickel plated?

Any help would be greatly appreciated. I'd like to get it back on the trails this season.
 

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You should be able to tell by how it looks, but i would guess its cast iron. If you are going to rebuild it I would reccomend changing your seals, a real common problem on the older sleds. Thats likely why your engine blew in the first place. Good Luck!
 

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I "also" have an '81 Jag 4000 440.. and I bought it off "also" blew a hole in the crank-case. I believe he used a JB weld.. but am unsure.. I know it is "some" kind of weld..
I am pretty sure it can be bored.
 

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Was it the top or bottom? I had the same issue with my 82 440. I threw a rod right out of the case. If you need the upper half of the case, i've got one that would probably work for you.
 

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Mine was on the bottom corner.
 
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