Forced Induction Section Fabrication Thread

[Butters Stoch]

Any of you guys have this ?
I would love a cheaper alternative. But this adjusts to 4"+ all in one.
Other solutions ?
http://www.besseytools.co.uk/pipe-gr...ro-110-65.html

[TheJuggernaut]

Yours makes my "by hand" welds look shitty.
I see that you have a perfect silver there. Vedy nice.
This was crappy aluminized 3.5 to stainless v band. Using 308 rod. As for the pulsing. I pulse weld. Not with the machine, but foot pedal pulsing. I've learned that its better to crank up the amperage and use only what you need, vs setting to "guide thickness" and holding it to the boards. So say 0.050 stainless, some will set to 50amps , I usually run at 75-100 and work the top of the pedal. Better to have and not use, vs not have and need.

The flash is making it more silver than reality, it's got a blue hue. It's just stainless so as long as it's not gray it's fine. The back of the weld is a lot more important, with full pen and no purge it'll be brittle.

BTW for mild to stainless, get yourself some 309

[XnWarden]

I have a question for you fine folks. Im looking to fabricate an exhaust. I plan to eventually turbo, but staying NA till i get the car and wallet a lil better sorted.

Looking into a 3 inch exhaust with vibrant resonator and borla xr1 muffler. The design seems fairly straightforward. A few 45 degree bends and a few welds. I have a hobart MIG 140 welder, but im inexperienced. What shielding gas will i need for 304 stainless? And where can i get materials? What additional tools might i need such as saws, clamps, etc?

Thanks for your time

[TheJuggernaut]

You'll need what's called tri-mix. Google a welding supply store nearby and get everything you need there. Try to support your local guy. But online, in my experience cyberweld has the best service.

[Butters Stoch]

You'll need what's called tri-mix. Google a welding supply store nearby and get everything you need there. Try to support your local guy. But online, in my experience cyberweld has the best service.

You buy gas online ?

[someguy2800]

Mig welding stainless kinda stinks in my experience. I would just tack weld it together using regular steel wire in the mig and then take it somewhere to have them tig weld it. If you don't mind the welds rusting you can weld stainless with normal steel mig wire just fine too. Just an option

[Boosted E30]

I'd like to learn how to tig weld, mainly to do exhaust, charge pipes stuff like that. Started doing some reading last night, what would be a decent Ac/dc tig that's good to learn on, won't break the bank and still be good quality as my skill level progresses?

Anyone have experience with the Eastwood 200 Ac/Dc tig? Price point is nice but reviews are hit and miss from what I've read so far. Other options suggestions?

[tptrsn]

Same idea, 30%DC 5%BG, for outside corners I like 1-1.2pps (like stacking tack welds), for buttjoints like sheet or pipe, I like 100+, usually use 150. The HF pulse also works wonders for focussing the arc, it stays pinpointed like a laser. You'll have to experiment with amperage because you'll need more than you would with constant amperage.

I played around again yesterday with some low speed pulse, autogenous and with filler. You're right, I really have been missing out! Got some really nice results, and clearly there is even better to be had with more time using it. Anyway, thanks for the push in that direction!!

- - - Updated - - -

I'd like to learn how to tig weld, mainly to do exhaust, charge pipes stuff like that. Started doing some reading last night, what would be a decent Ac/dc tig that's good to learn on, won't break the bank and still be good quality as my skill level progresses?

Anyone have experience with the Eastwood 200 Ac/Dc tig? Price point is nice but reviews are hit and miss from what I've read so far. Other options suggestions?

The AHP 200x is king for that.

[TheJuggernaut]

You buy gas online ?

No I only buy major stuff online, like machines and supplies I can't get locally (most normal stores don't know anything about Lanthanated electrodes or 4943 filler).

I played around again yesterday with some low speed pulse, autogenous and with filler. You're right, I really have been missing out! Got some really nice results, and clearly there is even better to be had with more time using it. Anyway, thanks for the push in that direction!!

Awesome, happy to hear! My first and only TIG is a Dynasty 210DX and everyone said it's overkill you don't need all those functions, you'll never use them. Ah bullshit. The machine doesn't force you to use them but once you have the basics down, start playing with all of them. Turn each knob/number/whatever all the way one way, then the other, see what happens and you can use your imagination from there. I'm a relative newbie having been TIGing for not much over a year and I've discovered techniques and feature applications for myself just by experimenting that I would later see talks and videos from experts being surprised to hear the same thing from some other expert. Oh really, low DC/BG, high amp DC pulse keeps sheet metal straight and pretty? You don't say...

My latest discovery is after I bought the independent AC expansion. Miller says to jack the EN in a 2:1 ratio but I actually didn't get much out of that. But when I jacked the EP to 2:1, I found I could reduce the balance to 85-90% EN, making for a tiny etching zone, clean puddle and a very happy electrode point.

[tptrsn]

That AC expansion is the first thing that makes me feel like someday I may actually want to spend the money on a Blue machine instead of my beloved Chinese stuff haha.. Although the Chinese will probably copy that before long too...

[JimsR]

You'll need what's called tri-mix. Google a welding supply store nearby and get everything you need there. Try to support your local guy. But online, in my experience cyberweld has the best service.

I believe for mig 75/25 argon/co2 will also work with ss only the weld will have a grey color. Will a trimix also work with other metals?

[Butters Stoch]

I believe for mig 75/25 argon/co2 will also work with ss only the weld will have a grey color. Will a trimix also work with other metals?

Steel mix is what you speak of. It will work, not as well but it will work.
If you start getting all text book on this, you will need a warehouse to hold all the "appropriate" gasses/rods/tools etc.
As a DIY'er, use what you can and what will hold and work.
Unless your putting items on the market, do go broke buying everything under the sun.
I know guys that purely use one tungsten, one gas, one saw etc and their work is out of this world.

[tptrsn]

Playing around with low speed pulse yesterday at the urging of juggernaut, I had some nice results. I'll definitely use more of this technique.

Welding mild dump tube to a stainless wastegate outlet flange (don't ask me why, it's just stuff I had handy as usual), got a nice pattern by hand, and very little excess penetration, so very little or no sugaring on the inside of the weld:

AutogenousMildToStainlessLowSpdPulse.jpg

Autogenous mild steel V-band flange to mild 3" tube by hand, PURTY:

AutogenousMildVBandLowSpdPulse.jpg

Mild steel V-band flange to 3" mild steel tube with ER70-S6 filler:

MildVBandWithFillerLowSpdPulse.jpg

And here is where the biggest benefit to me occurred in terms of aesthetics. Normally my mild steel tube butt welds with ER70 filler don't have any attractive pattern to them, despite being perfectly strong and good welds. Using low-speed pulse I actually turned out some decent appearing welds:

LowSpdPulseMildwithFillerOutside.jpg

MildWithFillerLowSpdPulse.jpg

The interior profile of these welds looks great, but I already had nice interior profile going on. It's nice to start getting a little bit of decent aesthetics on mild steel with filler for a change. Thanks juggernaut for the suggestion!!

[TheJuggernaut]

Looks great man, happy to be of use!

[Butters Stoch]

Lets see em . .

[TheJuggernaut]

YivXm6D.jpg

[vollosso]

Sent from my iPhone using Tapatalk

[jakermac]

Is that one of mine Zack?

[vollosso]

Is that one of mine Zack?

Yeah it is


Sent from my iPhone using Tapatalk

[Butters Stoch]

Started a steed speed dump tube for a member.

ugh he said member.

[XnWarden]

Lets see em . .

I like yours, it reminds me of Iron Maiden

[someguy2800]

$30 at harbor freight!

[tptrsn]

Those HF helmets work great until TIG. For some reason they don't seem to properly protect from TIG... Maybe they don't darken quickly enough or something?

Here's my goofy AF looking rig. I don't have proper lighting in my garage, so I'm never without a headlight. I intended to mount this light setup to the welding hood permanently at some point like I did to my grinding hood, but so far the gaffer tape is working great, so I keep not getting around to it. Having the light directly on the subject after you drop the hood is a HUUUGE help for confirming proper fitup:

Welding helmet.jpg

Oh, also, this is a Lincoln helmet with the 4C screen. It is incredible. It seems like you can see the electrons dancing around, and so much better view of colors and whatnot. I thought the 3C screen was great, and this one is noticeably better.

[someguy2800]

The black harbor freight hoods don't work with tig. All the other ones work fine. I have both

[vollosso]

The black harbor freight hoods don't work with tig. All the other ones work fine. I have both

I had a cheap helmet for a while iirc 35$? And after like 2 years upgraded to a 75-80$ helmet, 1000% worth it. I can see twice as clearly, my eyes are way less fatigued, it even fits and holds better.

I was really surprised, the only reason I upgraded was the old helmet wasnt working anymore. Glad it happened.


Sent from my iPhone using Tapatalk