Search found 196 matches

by BigD
Tue Jan 29, 2019 2:27 pm
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: 321 to mild on a turbo manifold
Replies: 7
Views: 2424

Re: 321 to mild on a turbo manifold

Ahhhhh yes, that's the missing link in my thinking - the heatsink. Thank you Arno, makes perfect sense now. My wastegate is on a takeoff from the turbine housing, fairly remote, and it's a big ole V60. They're not watercooled but it's in a good spot in terms of cooling https://i.imgur.com/O8mviev.pn...
by BigD
Sat Jan 26, 2019 7:19 pm
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: 321 to mild on a turbo manifold
Replies: 7
Views: 2424

Re: 321 to mild on a turbo manifold

Schedule 10 1.5 yeah so .1" wall. It's not so much about the amount of chrome but the Cb of 347 to stabilize the joint and prevent carbide precip (in my mind anyway).
by BigD
Sat Jan 26, 2019 6:48 pm
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: 321 to mild on a turbo manifold
Replies: 7
Views: 2424

Re: 321 to mild on a turbo manifold

Never heard of that and I don't doubt it works but I'm specifically after extreme temperature resiliency (hence using 321+347). Even Burns who makes pro manifolds says to use 309 on the header flange, and I'm sure it's fine as that joint isn't as critical as the tubing butt joints or the collector b...
by BigD
Sat Jan 26, 2019 3:22 pm
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: 321 to mild on a turbo manifold
Replies: 7
Views: 2424

321 to mild on a turbo manifold

Hey guys, I'm working on a new turbo manifold for my car and I'm doing the runners out of 321. Experienced turbo racers told me to use a mild head flange for expansion and to weld to it with 309. Burns seems to agree but I was wondering what you folks thought? I know 309 is meant to weld 300 to mild...
by BigD
Sat Jun 23, 2018 1:22 pm
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: Cheap tungsten sharpener
Replies: 10
Views: 3232

Re: Cheap tungsten sharpener

Get their $50 circular saw blade sharpener, chuck the tungsten in a drill, perfect grind at any angle in seconds.
by BigD
Sat May 19, 2018 9:57 pm
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: The what I welded today (/whenever) thread (pics please)
Replies: 3253
Views: 540516

Re: The what I welded today (/whenever) thread (pics please)

Stainless diff cover to replace the stock aluminum one, and 4" side exit titanium exhaust
B4CD06D1-E634-4FFE-881E-B84A5D230E23.jpeg
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71899ADF-E90F-43EE-963C-81E5F656ACA7.jpeg (49.43 KiB) Viewed 4715 times
by BigD
Mon Feb 05, 2018 1:21 am
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: The what I welded today (/whenever) thread (pics please)
Replies: 3253
Views: 540516

Re: The what I welded today (/whenever) thread (pics please)

Moving my wastegate straight to the turbine housing for real boost control, the WG is so huge (V60) that I didn't have a nice way to dump it so I decided to do a smokestack. Can't wait to hear how it sounds (in addition to the 4" Ti side exit exhaust I plan to do) r0nJRYI.jpg Also haven't done ...
by BigD
Sun Dec 24, 2017 12:24 am
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: Sleeved pipe butt weld tips?
Replies: 12
Views: 4309

Re: Sleeved pipe butt weld tips?

Turned out well! I still can't quite wrap my head around how much welds make metal move around. I know it does but I find it hard to "feel" like it's real. My friend machined it to such a press fit that he needed to use his mill table to assemble it. He adjusted it to a 0.002"ish runo...
by BigD
Tue Dec 12, 2017 6:26 pm
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: Sleeved pipe butt weld tips?
Replies: 12
Views: 4309

Re: Sleeved pipe butt weld tips?

Others who know what they're talking about can answer that better but I wouldn't try that, feels like adding unevenly distributed welds can add stress risers and uneven tension. I want to make the joint as uniform all around as I can.
by BigD
Tue Dec 12, 2017 6:23 pm
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: Torch switch for a 14pin connection
Replies: 7
Views: 2460

Re: Torch switch for a 14pin connection

I had a look at that eastwood part number and it's that paddle switch all the Chinese welders come with. I'm not a fan of these, my China plasma cutter came with one, I was always afraid of breaking it (and later saw videos of guys doing just that). The button is nicely positive without needing a lo...
by BigD
Mon Dec 11, 2017 10:53 pm
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: Sleeved pipe butt weld tips?
Replies: 12
Views: 4309

Re: Sleeved pipe butt weld tips?

Sorry about the late reply guys, I was at PRI until yesterday and now laid up with the flu. I assume the sleeve also adds strength to the weld? Do you burn into the sleeve as well? Yeah that's my plan currently, to hit the sleeve with the autogenous "tacking" pass and then a cover to get t...
by BigD
Wed Dec 06, 2017 9:50 am
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: Sleeved pipe butt weld tips?
Replies: 12
Views: 4309

Re: Sleeved pipe butt weld tips?

This needs to have no wobble when fully welded? I feel like that is almost impossible, but im not that experienced. I like the idea of clamping angle iron and tacking it in a bunch of places. Not a ridiculous tolerance but as close to no wobble as reasonably possible. It's a driveshaft section. The...
by BigD
Tue Dec 05, 2017 1:57 pm
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: Sleeved pipe butt weld tips?
Replies: 12
Views: 4309

Sleeved pipe butt weld tips?

In the near future, I will be joining two 2.5" 095 wall mild tubes with a machined inner sleeve. I've requested it to be a tight hammer/press fit. The end result needs to be as straight as possible. My plan right now is to fit it up straight, clamp some angle iron in each side, verifying that i...
by BigD
Tue Nov 21, 2017 1:33 pm
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: Purging - sealing/pressurizing?
Replies: 6
Views: 2178

Re: Purging - sealing/pressurizing?

Yeah I use PET tape for holding things together to tack but even then, especially with smaller parts where things are close together, I end up cooking it a bit. At least it comes off clean once it cools unlike other thinks like aluminum hvac tape.
by BigD
Tue Nov 21, 2017 10:43 am
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: Purging - sealing/pressurizing?
Replies: 6
Views: 2178

Re: Purging - sealing/pressurizing?

Oscar, as always you blow me away with how much time you're willing to take to explain everything fully, I hope it doesn't get old telling you how much I appreciate it! Josh, do you not find that you cook the tape? I find unless I go only a little bit at a time and let things cool, I start charring ...
by BigD
Mon Nov 20, 2017 3:50 pm
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: Purging - sealing/pressurizing?
Replies: 6
Views: 2178

Purging - sealing/pressurizing?

Hey guys, I've been doing more stainless lately and I've been experimenting with different approaches to purging, as we all know each situation is pretty much a bespoke solution unless it's the same pipe every time. I know Argon is heavier than air and should build up and displace air bottom to top ...
by BigD
Sun Oct 15, 2017 4:56 pm
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: Coolmate 1.3 first welds
Replies: 9
Views: 3723

Re: Coolmate 1.3 first welds

Just to confirm, the light on my cooler only turns on when it gets fired up by the CPS
by BigD
Sun Oct 15, 2017 8:48 am
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: Coolmate 1.3 first welds
Replies: 9
Views: 3723

Re: Coolmate 1.3 first welds

Thanks for this post - really helpful. I just fired up my coolmate 1.3 recently myself, and dont understand why the indicator light is not on when in use. have switched the setting to ON just so i could check if that was why, but no luck. Anyone else have this problem with the Coolmate 1.3? Thanks!...
by BigD
Wed Oct 11, 2017 8:12 am
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: The what I welded today (/whenever) thread (pics please)
Replies: 3253
Views: 540516

Re: The what I welded today (/whenever) thread (pics please)

Not my best welds but was still a fun project. Industrial side job came my way. 1/4” tube and angle, 1/2” base, pushing the limits of my 210DX, messing with the AC balance (decreased EP with a higher cleaning balance to keep the puddle clean but not fry the 1/8” tungsten) and using a low frequency h...
by BigD
Fri Oct 06, 2017 12:57 pm
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: tack welding thick and thin aluminum
Replies: 7
Views: 1857

Re: tack welding thick and thin aluminum

Depending on the disparity of the thicknesses, I go beyond just biasing the heat and treat it mentally as not even joining two things but running a bead on the thick piece and the thin one is basically like more filler - I'm not running a puddle on it, only on the thick piece and the puddle is what ...
by BigD
Fri Oct 06, 2017 9:16 am
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: ER308H
Replies: 8
Views: 2458

Re: ER308H

Will do! Still gathering parts for the project and the turbo is on the car currently but will update when I get going.
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by BigD
Thu Oct 05, 2017 10:26 pm
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: ER308H
Replies: 8
Views: 2458

Re: ER308H

I found some at gasandsupply.com, they have Oxford and Midalloy. Do you know these brands, either one better than the other?
by BigD
Thu Oct 05, 2017 9:23 pm
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: Trying to weld aluminum
Replies: 8
Views: 2144

Re: Trying to weld aluminum

My guess would be wrong, bad or not turned on gas. Settings are fine, they may or may not be ideal but that is far from not ideal.
by BigD
Thu Oct 05, 2017 9:18 pm
Forum: Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
Topic: ER308H
Replies: 8
Views: 2458

Re: ER308H

LtBadd wrote:Dmitry, how much and what dia do you need?
Hey Richard! Say about a pound of 3/32?