Hurricane exhaust

[blevis213]

How many are not using the stud and nut on that middle hard to get a bolt in or out on the exhaust flange? Is a bolt even needed there?

 

[idontknowjack]

I use it.

 

[NYTurbo]

If u don’t use it , it will leak there

 

[Doc Harley]

If u don’t use it , it will leak there

Hmmm....I have a TD sq and there is no hole in the flange to put a bolt in.

 

[justinator]

The td mufflers dont include the area for the bolt and no leaks. The precision, viney fab and stock exhaust do not leak if you do not use the "difficult"bolt. I never have on any of the mentioned mufflers and zero leaks. The hurricane muffler will leak without using all mounting holes. That has been my experience anyway.

 

[blevis213]

Ok thanks guys I’ll keep using it

 

[NYTurbo]

Has a lot to do with thickness of flange and how flat they are on the muffler

 

[Turboflash]

I always have bolt there. I changed T50 torx to M8 x 1.25 bolt there. Then, I slot the flange on muffler so I can leave the bolt in which also allows steel gasket to hang on that bolt when muffler is off.
I've seen many sleds with those bolts over-torqued (which can, and does sometimes bend muffler flange so it's no longer flat). Manual says tighten to 9 ft.lbs in criss-cross pattern, then final torque to 18 ft. lbs.

 

[stgdz]

Pulling these trail performance muffler is a pain in the neck.

 

[2004yamahaviper]

Had the hurricane muffler on for a few years now. Used the bolt the first time and that was it. No issues