rusty exhaust studs

[dagboyblue]

anyone got any tips for getting the rusty buggers out - this is stopping my rebuild

cant grip them enough to twist them out - even when i can they are rusted in solid (even after spraying)

 

[noddy]

Lock 2 nuts together then use to wind studs out.

Use the longer brass nut when fitting exhaust machine7.com do them, should be easier to get apart in future.

 

[dagboyblue]

cheers dude - will try on ones with thread

looks like i will have to try and drill out and re tap :?:

 

[Loxy]

If they snap off in the holes try using an easy out - can be bought from frosts amongst others

 

[aircured]

Had the same problem.
Used the double nut method with some and WD40 with mole grips on the others.
Eventually got them all out without having to drill any.

Copious amounts of wd40 and brute strength.
Replaced them all with brass and changed the nuts as well.

 

[uber cool]

try soaking the barrel in a bucket of diesel over night, has very good release properties.

Failing that a gas torch (blow lamp) to heat the stud to a nice cherry red

failing this mole grips

failing this, copious amounts of swearing and brut ignorance .......................................

however the later will almost certainly lead to a need to drill them out :mrgreen:

 

[Clem]

Weld a nut onto whatever is left ... it gives you something to get onto and the intense heat will free it up.

 

[Bookwus]

Hiya dag,

Or..............you could just haul the case halves down to your local machinist shop and let them do the job for you. Of course this is going to a bit more spendy than tackling it yourself but EZ outing a rusty steel stud sitting in a magnesium alloy case can be fraught with peril. I've seen more than one case that would have been (much) better off at the machinist's.

 

[vdub wannabe]

I had a similar issue on my cabrio beetle trying to get the heat exchanger off and that was stopping rebuild.

The exhaust bolts were so rusted and I could'nt get direct access to the bolt head. In the end I ended up getting a hack saw and sawing off the heat exchanger (it was knackered anyway) so I could get direct access.

I used the rachet spanners from halfords for the narrow space.

Nearly two hours with heat exchanger on, 10 minutes with heat exchanger off!! Extreme? You bet! :lol:

Note: cut close to the heat exchanger neck.......its got fins inside :lol: :lol: