Try a 50:50 mix of acetone and automatic transmission fluid.  Supposedly
better than any penetrating oil; google it.

Be careful, acetone is highly flammable.

Allan
--
1991 Vanagon GL

On Mon, 08 Feb 2010 20:42 -0600, "John Rodgers" <inua@CHARTER.NET> wrote:
> One more method to try.
>
> Melt candle wax or paraffin on the nut/stud. If enough can get down
> into the threads - it should turn.
>
> John Rodgers Clayartist and Moldmaker 88'GL VW Bus Driver Chelsea, AL
> Http://www.moldhaus.com
>
>
>
> John Rodgers wrote:
> > David,
> >
> > I haven't had the occasion to have a problem like this on my van -
> > or even to try and remove an exhaust nut on a WBX - but in my
> > aircraft mechanic days, when this kind of problem arose, a nut
> > splitter was used. If that doesn't work - try soaking the nut and
> > stud for 24 hours with Marvels Mystery Oil - the actual oil - not
> > that top-overhaul-stuff. Then, apply the 200 tap principle using a
> > socket that will fit over the stud, but rest the shoulder of the
> > socket against the face of the nut. Then try and remove with a
> > proper fitting socket. If it does not loosen up - repeat with 200
> > more taps. If that doesn't do the trick, grind the nut down
> > carefully  on one flat, then try to turn the nut.  The grinding down
> > should weaken the metal sufficiently for it to stretch just enough
> > to break loose. If all that fails - grind the nut off with
> > expectation to replace the stud.
> >
> > John Rodgers Clayartist and Moldmaker 88'GL VW Bus Driver Chelsea,
> > AL Http://www.moldhaus.com
> >
> >
> >
> > David Marshall wrote:
> >> I am trying to replace the turbo on my Syncro TriStar.  It it held
> >> on to the manifold with three 13mm nuts, these nuts go on to studs
> >> which go into the manifold.  I really don't want to break the
> >> studs.  I can put enough pressure on the socket where I know if I
> >> go much further the stud will break.
> >>
> >> Three days of penetrating oil "3-IN-ONE 'High Performance
> >> Penetrant'" and no with luck other than my garage stinks.
> >>
> >> I've tried the tighten a bit and then loosen which seems to work
> >> with allen bolts and light tapping with the impact gun... they're
> >> still in place.
> >>
> >> What should I do next?
> >>
> >> David Marshall VW Adventure Driver and BMW Adventure Rider
> >>
> >> HasenWerk http://www.hasenwerk.ca
> >>
> >>
> >>
> >
> >