Should I be using Loctite on the flange nuts or cylinder studs when installing a new exhaust system on a 08 FXDC? How do you keep these flange nuts tight? After the install everything looked pretty good but after riding it around I thought the exhaust was leaking and I noticed that the flange nuts were loose. Any suggestions?

 

You can go to a hardware store or better a industrial fasthener store and get 4 swedged grade 8 nuts to fit.

 

Because of the high heat, I'm not sure loctite will help.

 

use anitisieze and check them every ride for a while. DO not use lock tight on the exhaust studs. It is common for them to loosen up a time or two after replacing the exhuasts. Do not over torq as it is a pain to try and remove a broken stud.

 

No loctite, anti-seize as mentioned. Another trick is to put a second nut on the stud to use as a jam nut, but that's tough to do properly on some of those studs. The only issue with the swaged or prevailing torque lock-nut is that the torque values are affected some unknown amount.