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how to fix exhaust gap?

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My mother-in-law came to me today saying that when she starts her 2010 Honda CRV, for the first 2 minutes she heard a loud exhaust sound. I noticed the same thing. I found that when the exhaust pipe warms up, it expands and creates a seal and eliminates the gap between the exhaust pipe and the catalytic converter. I found that there are 3 bolts that hold the two pieces together, however all the nuts seem to have rusted off and I able unable to get the bolts out. I also noticed that on one of the bolts, the flange around it completely rusted away so the bolt couldn't hold the two pieces together anyways. I was wondering what would be the best course of action to fix this? Would I need to have a new flange welded on with 3 new bolts?

 

Below is a link to google photos which shows the gap:

https://photos.app.goo.gl/taLco6ZN3p12Rkio7

https://photos.app.goo.gl/SECYbbaHFp3nD6nc7 this is a further away photo to give context

Garage appointment and pay for new piping if owner plans on keeping vehicle for LONG time. Other than that, get strips of tin strapping and cover gap with spiral wrappings, and use Stainless hose screw clamps to hold over the spot.

@russwr please place your answers in the appropriate box. It's at the bottom of the page, with the title "Your Answer". Comments are for follow-ups and clarifications. Thank you.

3 Answers
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I'd probably just replace the pipe that has the rusted out flange. Looks like that pipe is integrated with the resonator but an aftermarket replacement is not horribly expensive.

https://www.rockauto.com/en/catalog/honda,2010,cr-v,2.4l+l4,1444968,exhaust+&+emission,pipe+/+resonator,10038

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This is a fairly simple repair for any muffler shop.

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Posted by: @gusbus148

I was wondering what would be the best course of action to fix this?

Go to a good muffler shop and get it replaced with NEW.

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