Bought my N2 regulator rig at the welding supply shop (it's a 'Turbo Torch') and bought a brass fitting (SAE 45 degree) that was threaded on the non flare end (1/8NPT). I test at 100psi - no more, no less. The fitting fits R-12 charging hose for auto applications.

That is a good answer..

' a welding gas ' may not be safe for this.... even Oxygen under pressure can cause an explosion..
let us know more..
we do not want you to get hurt..

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1980 240d ,

chain elongation, cam marks reference:
http://www.peachparts.com/shopforum/showthread.php?threadid=10414

http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html

evap fin cleaning:

http://www.peachparts.com/shopforum/showthread.php?t=156207&highlight=evaporator

A/C thread

http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html

Since the argon component of the welding gas has a smaller molecule than nitrogen. I use argon for pressure testing.

It would be a good idea to define the gas ( in a later post our guy said 75 Argon / 25 CO2 )




This is so wrong. According the the Google machine, The six naturally occurring noble gases that occur naturally are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and the radioactive radon (Rn)

Nitrogen isn't on the list









Dihydrogen Monoxide has oxygen in it also, so dumping some on a fire will make it flare up using your logic.

I use CO2 carbon dioxide to pressure test AC systems because I keep it for MIG welding rusty metal and as a portable "air" source for air tools and such. If you use it for inflating tires, it will leak out at a faster rate due to the molecules being smaller than nitrogen. ( Nitrogen makes up ~ 75% of the air we breathe. )