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Exhaust studs getting loose/falling out?

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pfillery Insano Dub Head

734 posts · joined Dec 2011 ·

#1002892
Just lost another exhaust stud today. Replaced one that was missing a few months back, tightened everything up. Some other exhaust nuts were loose again.

Do I need to use bigger studs or some sort of thread locker? It's on a 1600 kombi engine. Is there a better nut/bolt/stud combo?

shokwave2 Officially Full-On Dubber

289 posts · joined Mar 2010 ·

#1002921
I had an exhaust stud come loose at the Sydney VW Drags this year. I used a timesert with threadlock and it hasn't pulled or loosened once yet.

grumble Son of Jim - Creator of Good

2,672 posts · joined Jun 2008 ·

#1002923
have you tried helicoils in them,we use them in the trade with great success?

bajachris88 The international telephone dialing code for Antarctica is 6

6,661 posts · joined Apr 2005 ·

#1002924
As long as its not stripped, I can't see why a thread locking compound (as long as it cold handle high temps) could be used.
(ô_!_/ô) (ô_!_/ô)
69' baja: kombi box, thing spindles, irs, disc front, type 3 rear drums, 2 inch lift kit, 31x10 rears. 👍
New engine in process: 94mm p&bs, 74mm C/w chomol Crank, 35.5x39 SP heads, turbo. Wierd combo, hopeful torque monsta!

psimitar Son of Jim - Creator of Good

2,506 posts · joined Jan 2009 ·

#1002944
How loose is the thread in the head when you screw the stud in? Cos galvanic corrosion between the steel n ali along with the heat is pretty good at killing the thread in the head.

Either helicoil or time-sert are the best ways to fix unless you know someone good at TiG welsing ali 🙂
madness is in the eye of the beholder 👍