ManBearPig4silly

K well think what you want and argue all you want. I've said my piece and every organization governing welding and quite a few people here agree with me. Knock yourself out with the examples!

JDMs1eeper

Building non back purged manifolds are a thing of the past. But I can say I have 2 Ramhorns with 40k+ miles still holding up wonderfully from almost 6 years ago.



old pictures of purged sch.40

JDMs1eeper

Back-purging isn't important all the time. (when welding your own parts or to help a non paying friend)
As long as you can live with the way you welded it.

If its for someone else, even if they request it to be non back purged. Remember that when that Manifold is in the hands of its 2nd, 3rd or 4th owner. They may assume that "all" of your manifolds are done this way and judge you on a product that doesn't fully represent you and your business/hobby.

91ed9

heres a noob backpurging question. how much argon do you flow into the piping wouldnt that be like wasting alot of argon gas?

serious question though bci would like to be making a turbo manifold for my Audi

ScorpioMk

i run 5-8 cfm on the backside, my flowmeter thing im using is hard to gauge but its right at 5 or a little above usually.

AFFIRace

Agreed!

91ed9

so if i run ~5 cfm, i should be good? now what size bottles are you guys using,
using different bottles or have another (inexpensive) way than buying a regulator that has 2 gauges and adjustments....

aluthman

Dual flowmeter regulator on a 150 cf bottle. HTP sells this regulator on ebay for a little over $100.

90civichbsi

iTrader: (1)

If you already have a regulator you could just get one of these and another regulator:
Argon Inert Gas Y Adapter Connect 2 Regulators to 1 Bottle Western T 92 C 2580 | eBay

Cheaper than buying a dual flowmeter.

mafia

nice 6yr bump

aluthman

As dead as this section is anymore, you almost can't post without bumping something from the grave.