header thickness
For those folks who know about fabricating manifolds... what's the minimum RELIABLE thickness for the tubing? I was thinking .065 stainless would be sufficient but what about mild? .095? Any thoughts?
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Originally Posted by Arkmage
(Post 52951)
For those folks who know about fabricating manifolds... what's the minimum RELIABLE thickness for the tubing? I was thinking .065 stainless would be sufficient but what about mild? .095? Any thoughts?
Remember, this is going to heat cycle alot, and the penalty you'll pay for using thicker steel is worth EVERY hit in weight and "performance". So go with the thickest stuff you can find. My weld-el manifolds would typically last several years but eventually would fail from heat and oxidation stresses. Usually a quick patch and weld would restore the manifold to it's former glory. Mark |
I use sch 10 stainless weld els, or you use sch40 mild steel weld els.
-Michael- |
gotcha... the weld ells are what I'm planning to use, but i was curious what the thinnest was I could go without failing it in a year or so... I just wish my quest for weld ells local was more sucessful... cheapest i've found is $12/90* for sch 40 mild an $10/90* on sch 10 stainless.
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Originally Posted by Arkmage
(Post 52957)
gotcha... the weld ells are what I'm planning to use, but i was curious what the thinnest was I could go without failing it in a year or so... I just wish my quest for weld ells local was more sucessful... cheapest i've found is $12/90* for sch 40 mild an $10/90* on sch 10 stainless.
Mark |
acestainless.com
Your welcome -Michael- |
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Hi guys - interested in the homemade header option. I've got the image of the flange and a client with a CAD mill, and a 140A MIG.
All I've ever welded was steel, but I was thinking of trying my hand at aluminum (for IC piping). SS would be "interesting" as well, for manifold and exhaust. For those who have done both, how much harder is SS than mild steel to weld, and can it be done with a 120V140A MIG? I'd be interested in doing it myself to A) save a few bucks and B) learn something new. Cosmetics aren't real important. I'd just make a log instead of an equal length, if that matters. |
Stainless isn't much different, You just need stainless wire, and possibly a different gas (argon)? Welding aluminum with a Mig won't work that I know of. If you have the capabilities a TIG would really be what you need to make a nice manifold or weld aluminum. If you decide you want a mani. made, let me know and maybe I can help you out.
-Michael- |
Originally Posted by TheBandit
(Post 53104)
Welding aluminum with a Mig won't work that I know of.
http://www.lincolnelectric.com/knowl...compactmig.asp When I was buying my welder, there was a dude who was doing his best to weld some AL battery boxes for his boat. Welds looked like ASS, but they were functional. So I know that AL is hard to deal with (hence my interest - never been one to shy away from a challenge) but not impossible. |
Well, like I said, theres not any way that I knew of. Al is hard to weld with a Tig, I couldn't imagine it with a Mig. Good luck.
-Michael- |
Thin aluminum is very difficult with a MIG, but thicker stuff is not out of reach for beginners. You will HAVE to have an argon tank for aluminum and stainless, weld quality with CO2/Mix is crap for anything but mild steel. 140A should be more than enough for stainless, aluminum however tends to require a lot of current so depending on thickness you may want a beefier unit. For IC pipes I'd think 140 would be adequite.
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Originally Posted by kyle242gt
(Post 53096)
Hi guys - interested in the homemade header option. I've got the image of the flange and a client with a CAD mill, and a 140A MIG.
All I've ever welded was steel, but I was thinking of trying my hand at aluminum (for IC piping). SS would be "interesting" as well, for manifold and exhaust. For those who have done both, how much harder is SS than mild steel to weld, and can it be done with a 120V140A MIG? I'd be interested in doing it myself to A) save a few bucks and B) learn something new. Cosmetics aren't real important. I'd just make a log instead of an equal length, if that matters. The power requirements are well within what your MIG welder is capable of. You'll also want to get a spool of stainless wire to do the welding. Mark |
Originally Posted by TheBandit
(Post 53104)
Stainless isn't much different, You just need stainless wire, and possibly a different gas (argon)? Welding aluminum with a Mig won't work that I know of. If you have the capabilities a TIG would really be what you need to make a nice manifold or weld aluminum. If you decide you want a mani. made, let me know and maybe I can help you out.
-Michael- Mark |
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