exhaust connection sealant?

[old CB]

On my chipper there's a connection where one section of exhaust pipe has a slight leak. It wouldn't concern me except that it's a male section above and female below, allowing rain and snow melt to funnel down in. Don't want any moisture to get into the turbocharger or worse yet a cylinder. After a rain, when I start the chipper it burps a few drops of moisture.

I tried tightening the clamp, but it's tight as can be and still there's just enough gap to allow moisture in.

Seems to me I used to know of some substance that could be used to seal such a gap. Anyone?

 

[Deleted member 117362]

On my chipper there's a connection where one section of exhaust pipe has a slight leak. It wouldn't concern me except that it's a male section above and female below, allowing rain and snow melt to funnel down in. Don't want any moisture to get into the turbocharger or worse yet a cylinder. After a rain, when I start the chipper it burps a few drops of moisture.

I tried tightening the clamp, but it's tight as can be and still there's just enough gap to allow moisture in.

Seems to me I used to know of some substance that could be used to seal such a gap. Anyone?

Have you tried Permatex Ultra Copper?

 

[old CB]

Have you tried Permatex Ultra Cop


I haven't tried anything. I just remember from experience years back (combines, tractors, & such) that sealing exhaust is difficult. The enormous heat differential means any substance has to expand and contract a great deal and still keep its position. Seems to me I used to use something that could work in the right circumstances.

In this instance, the joint in question leaks/faces up, so if I can force some sort of gunk down in and let it harden, gravity should hold it in place.

Permatex Ultra Cop will do this?

 

[Huskybill]

Without a pic of the problem area could it be MiG welded?

 

[ChoppyChoppy]

Weld

 

[old CB]

This exhaust connection is inside the engine housing, in a location that would be a total PIA to get to. I got a tube of Permatex, but even working with that will be difficult, as there's little room to work.

Chipper is at my current job site, and I won't try messing with it until it comes home to the shop. Probably be a week or ten days from now.