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From: videokid400 on 18 Apr 2007 19:30
On Apr 13, 9:05 am, mrdarr...(a)gmail.com wrote:
> On Apr 12, 6:17 am, videokid...(a)hotmail.com wrote:
>
> ....
>
> > A tube nut is in no way a tempered metal , it is in point of FACT a
> > stamped rolled nut and in MOST instances in dismantling EGR systems in
> > the last 15 years I have found it the most time efficient and by far
> > the least damaging way of removing tube nut/riser pipe assys.
>
> Thanks for that. Came off in just a few minutes of brazing with
> propylene.
>
> I vacuum-tested my EGR valve again (while on the car), and it holds
> vacuum perfectly. It helps to use the right size tubing. ;-)
>
> Just as a clarification: I removed the nut AFTER removing the pipe
> (and EGR valve) from the engine. I would not recommend trying to
> remove the nut with a blowtorch while still attached to the intake
> manifold.
>
> Michael

Perfectly safe to heat while on car.We do heaps of them.
dave

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