The custom fabrication thread! (Post pics of stuff you have made) - Page 29 - Miata Turbo Forum - Boost cars, acquire cats.

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Fabulous Fabrication Post all your custom fabrication projects here; impress all your friends.

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Old 09-19-2013, 11:44 AM   #561
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Quote:
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I guess its almost the same material costs if you're not buying the CX-Racing crappy bends and are getting like vibrant quality or better aluminum bends. The only real downside I've found with the twain CX-Racing bends is that occasionally you'll just hit a really thin spot and end up with 1/4" hole before you can get off the pedal.
I've used CX stuff before with the thin wall on the ouside of the bend.

Once you do a lot of aluminum you get used to playing with the feed speed while you go around and see it widening out.

Its the nature of the beast for mandrel bent elbows vs extruded elbows.



HellaFab Turbo GXP intercooler kit by HellaFab, on Flickr
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Old 09-19-2013, 11:47 AM   #562
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I can not for the love of god get my machine to weld aluminum well.

I'm honestly almost starting to think it's a machine issue too.
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Old 09-19-2013, 12:04 PM   #563
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Biggest thing is making sure that your tungsten is 100% clean.

Everything else is pie.


The weld above-virtually no prep. Cut the pipe with band saw, sand edge of cut with belt sander, weld.

Dont use a grinder wheel on aluminum... pounds air into the metal and it comes out when you weld.

If you dip the tungsten, you HAVE to clean it and the tube or whatever your welding with a brush.


I have tried a multitude of tungsten and the green tungsten and red tungsten would work fine for a second and then randomly just go black and really **** the weld up. go get some purple e3's if you havent already and you will be good to go.
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Old 09-19-2013, 12:43 PM   #564
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Machine settings? I think we're using the same one, or one that's close.
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Old 09-19-2013, 01:15 PM   #565
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120a, 120hz, ac balance around 10 o'clock (cant remember off hand what the number is in that area)
No preflow (but 1s would be better) and as much post as I need to get the tungsten cooled before it shuts off... usually about 10s.

Using 1/16" purple e3 tungsten, but a 3/32 would hold up a little better I think. If i mash the pedal and hold it, the tungsten begins to melt... but you dont need that much amperage on this 0.065" wall aluminum for more than a few seconds to get going.
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Old 09-19-2013, 01:57 PM   #566
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I'll try it.

Thank you sir.
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Old 09-19-2013, 03:07 PM   #567
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Default A Couple old shots

First downpipe off of my 1.6L 16G setup.
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The custom fabrication thread! (Post pics of stuff you have made)-img_2077.jpg   The custom fabrication thread! (Post pics of stuff you have made)-img_2078.jpg  
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Old 09-20-2013, 12:43 AM   #568
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Some weldz. This is removing a neck down on a HKS exhaust for an EVO.





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Old 09-26-2013, 10:20 PM   #569
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Here's something I made to speed things up, and increase quality, since I weld dozens of these ******* every week. Previously I would go about a 1/6th of the way around, and then I would let the glowing orange bung cool down with the 15 second post flow. At best, I would get a purple color, hardly any blue, never any gold or silver. I've used aluminum to suck the heat out of many header flanges I've welded, so I made this device. U cut the "fins" carefully by hand on the vertical bandsaw, obviously to add surface area. It works so ******* well, I could do the whole sensor in 1 pass in theory (I'm only capable of doing half at once right now), and it never glows any more than any other regular weld when I'm finished.


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Old 10-02-2013, 01:37 PM   #570
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Here is a small selection, but its 3:30am so gnight.













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Old 10-02-2013, 02:46 PM   #571
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Did you mirror this photo, or is everything backwards because the picture was taken upside-down?
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Old 10-02-2013, 02:47 PM   #572
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Did you mirror this photo, or is everything backwards because the picture was taken upside-down?
I think thats an RB engine in not a miata.
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Old 10-02-2013, 02:59 PM   #573
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You're both geniuses. That's a 2JZ in a Supra.
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Old 10-02-2013, 02:59 PM   #574
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2JZ no ****.
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Old 10-02-2013, 03:02 PM   #575
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Does it make 900hp and run 13s?
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Old 10-02-2013, 03:13 PM   #576
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Does it make 900hp and run 13s?
You know it's a ten second car, right?

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Old 10-02-2013, 03:18 PM   #577
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Maybe if you tow it, or push it.
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Old 10-02-2013, 03:25 PM   #578
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Maybe if you tow it, or push it.
with rockets.
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Old 10-02-2013, 08:52 PM   #579
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Lol you guys.

Here's a few welds from my daily routine.

304 ss tube to cold rolled steel flange. Note the nearly perfect silver color (though I like blue personally)



Yeah blue, much prettier.



And you all remember my o2 heat sink? Well it's working great

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Old 10-02-2013, 09:17 PM   #580
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Like.. 1200hp and runs 15.6@155mph lol.

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