exhaust studs?

[T.Byrd]

while I was taking my exhaust off today one of the studs backed out, when I put the stud back should I use loctite or never seeze?

 

[Moespeeds]

Neither, just put it in dry. Make sure you put the correct side in, from memory I believe the course thread goes into the engine case, fine thread gets the nut, but look at the other ones to be sure. Double nut it to get it in, but don't go too nuts cranking it down. I think there is a torque spec somewhere. I have them come out on me when taking off the pipes now and then, it's no big deal as long as they stay on when you're riding! FYI. if you look at some of these custom guys they don't even use studs, they use chrome allen heads through the flange into the case.

 

[chacha]

I've never used anything on the stud to the engine part. Have one Tech swear by Red Loctite for that connection.

I do use a dab of anti-seize for the stud nuts (along with a washer and a lock-washer).

 

[Loafington]

With the temperature that those studs see, all Loctite thread locker is rendered useless as they fail just over 400 degrees f. Don't waste your time putting it on. Put them in dry, torque to spec and ride.

 

[RRRUFF]

Torque spec: Loosen your frame bracket bolts first the tighten Bottom flange bolts 20 in lbs then top to 60-80 in lbs then bottom 60 - 80 in lbs. Then tighten frame bracket bolts to 25 ft lbs medium strength loctite.

 

[Little-Boo]

T-Bird, the service manual says Loctite 2760 and 90 inch pounds torque. I do believe that 2760 is the RED Loctite.

Carlos

 

[gearsmithy]

You shouldn't need threadlocker on exhaust studs. exhaust (aka "milled" or "manifold") studs are engineered to be self locking but I don't think you would hurt anything if you used locktite on them.

You should however put anti-seize on the finer threads (i.e. the ones that accept the nut) or you will just end up backing the whole stud out again when you pull your pipes later.

I would not recommend using bolts as previously mentioned. I'm not going to get into a dissertation about fastener design but for what it's worth studs were used for a reason, and you shouldn't deviate from that unless you're bike's a trailer queen. Basically if you do go that route you increase the risk of striping the threads out of the head (which isn't the end of the world but a major PITA to fix).

 

[T.Byrd]

Thanks everyone: