Aftermarket Exhaust Install with Hi-flo Cats

[acura_NA2]

Question 1: When joining the Hi-flo cats to the exhaust, is there a gasket that I am supposed to use? I know there is a tapered gasket from the header to the cats, but when separating my stock exhaust from the cats, I didnt notice a gasket of any kind.
Would it be ok if I used some Hi-Temp Permatex gasket maker at those connections? I'm just concerned about exhaust leaks.

Question 2: What is the proper torque for connecting the exhaust system together? Is it just "snug" to allow for some expansion due to the heat?



Thanks in advance!

 

[JD Cross]

Page 9-4 of the shop manual has all the torque settings and shows all the gaskets
If you don't have a shop manual you can download a free one from the Wiki.
Best not to guess on how snug a bolt should be.
Use the manual.

 

[angus]

Question 1: When joining the Hi-flo cats to the exhaust, is there a gasket that I am supposed to use? I know there is a tapered gasket from the header to the cats, but when separating my stock exhaust from the cats, I didnt notice a gasket of any kind.
Would it be ok if I used some Hi-Temp Permatex gasket maker at those connections? I'm just concerned about exhaust leaks.

Question 2: What is the proper torque for connecting the exhaust system together? Is it just "snug" to allow for some expansion due to the heat?



Thanks in advance!

You need aftermarket gaskets for aftermarket cats since the stock cats use a crush ring.

You can also use the Permatex copper RTV.

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