Powerarc 161 STH settings

[TNDoug]

We have a pedal and the torch upgrade. This system has a 3" Magnaflow muffler, stainless flex pipe, 3 exhaust band clamps for easy removal and is 3" from front to back over the axle and a 3" to 4" end cap. We tacked the system for fit up on the car and now we're trying to get a real nice look on the welds. My grandsons are inheriting the shop and want to build high performance engines (too new for me). We build engines and transmissions now and have a full paint shop. They learn quick and are "tech" savvy (I'm not).

[christian]

Yeah,

Nice looking welds will most likely happen on the bench, with a bit bigger cup, more Argon flow, some back-purging, along with a lot of stainless TIG welding experience.

Or, like I did, as a newbie, none of that, and just some flap disc action to get a seamless look to hide the unflattering bead appearance. Ha, ha, ha... I mean, I could have brushed-out those beads with a wire wheel to make them look OK, but I knew I'd probably want the nicer seamless look.

But, it would be nice to see a pic of the layout, fit-up, and tack-up, i.e., how many actual welded joints there'll be.

Otherwise, that 161STH seems to have a Pulse feature, which may help control your heat input, especially with no Pedal. So, try some practice pieces with Pulse.

We have a pedal and the torch upgrade. This system has a 3" Magnaflow muffler, stainless flex pipe, 3 exhaust band clamps for easy removal and is 3" from front to back over the axle and a 3" to 4" end cap. We tacked the system for fit up on the car and now we're trying to get a real nice look on the welds. My grandsons are inheriting the shop and want to build high performance engines (too new for me). We build engines and transmissions now and have a full paint shop. They learn quick and are "tech" savvy (I'm not).

[TNDoug]

We use a mig welder a lot in the shop for body work. We're set up to back purge so we'll see how it goes. The "boys" have better hand/eye co-ordination so they'll figure it out. Thanks for the input, sounds like we're headed in the right direction.

[performance]

Are you using pure argon?

[christian]

Gee,

Here's a new Everlast video from their YouTube Channel which happens to be on stainless exhaust TIG welding, and how much difference back-purging makes.

.035 filler, too.

[TNDoug]

You said you didn't back purge, now you're for it? For the record, I said I back purge. I've already seen this video. You don't seem to be offering any new information. Thanks anyway.

[christian]

Yeah,

I said I was naive back then.

So, I do now recommend back-purging, especially if it?s for a commercial customer.

I might be able to offer some better or more helpful input, if you?d provide some feedback in the form of a pic of the system layout, the fit-up, tack-up, how many welded seams, etc?

A pic can tell a lot.

Are you considering Pulse, then?

[TNDoug]

Yep. Pure Argon.