Sunbeam Posted December 13, 2023 Share Posted December 13, 2023 I’m welding a mild steel exhaust together, brand new fresh tube. Is it worthwhile or necessary to coat/paint the outside? Quote Link to comment Share on other sites More sharing options...
shizzl Posted December 13, 2023 Share Posted December 13, 2023 3 minutes ago, Sunbeam said: I’m welding a mild steel exhaust together, brand new fresh tube. Is it worthwhile or necessity to coat/paint the outside? Not necessary but you can spray it with a high temp paint I dont normallybother with it myself, itll outlast my ownership 2 Quote Link to comment Share on other sites More sharing options...
JustHarry Posted December 13, 2023 Share Posted December 13, 2023 27 minutes ago, Sunbeam said: I’m welding a mild steel exhaust together, brand new fresh tube. Is it worthwhile or necessary to coat/paint the outside? Just looks better more than anything. Quote Link to comment Share on other sites More sharing options...
cletus Posted December 13, 2023 Share Posted December 13, 2023 I always paint mine. I use BBQ paint from bunnings. Lasts very well 2 Quote Link to comment Share on other sites More sharing options...
cletus Posted December 13, 2023 Share Posted December 13, 2023 I'd be interested to hear anyone's opinions on this... It's a suspension upright Quote Link to comment Share on other sites More sharing options...
igor Posted December 13, 2023 Share Posted December 13, 2023 Casting quality looks a bit shit. Quote Link to comment Share on other sites More sharing options...
Nominal Posted December 13, 2023 Share Posted December 13, 2023 Looks like it has had a casting flaw that has been welded up and ground back. 2 Quote Link to comment Share on other sites More sharing options...
igor Posted December 13, 2023 Share Posted December 13, 2023 If it has that one casting flaw how bad is the rest of it? Quote Link to comment Share on other sites More sharing options...
tortron Posted December 13, 2023 Share Posted December 13, 2023 Looks on par for 70s mopar 2 Quote Link to comment Share on other sites More sharing options...
sheepers Posted December 13, 2023 Share Posted December 13, 2023 unless there's a bolt hole in the end that you cant see in the photos id say its not to bad. where the corner of the post bit comes down into the casting looks pretty un touched and that's usually where the stress would show itself. just fuckin cert it cunt. 1 1 Quote Link to comment Share on other sites More sharing options...
cletus Posted December 13, 2023 Share Posted December 13, 2023 There is a hole in that part, the coilover mounts to it Quote Link to comment Share on other sites More sharing options...
h4nd Posted December 13, 2023 Share Posted December 13, 2023 Just make 'em stress test it? ('might be fine, hard to tell, just whang 5000kg on there and have the lab send me the report') Quote Link to comment Share on other sites More sharing options...
h4nd Posted December 13, 2023 Share Posted December 13, 2023 New games console just dropped: 5 1 Quote Link to comment Share on other sites More sharing options...
87creepin Posted December 13, 2023 Share Posted December 13, 2023 Welding safety ~ I need to weld on a bit of tube. I had an exhaust leak that got so weak a bit of tube/pipe deleted itself. do you guys recommend emptying the fuel tank? The exhaust gets pretty close to the fuel tank. I think I’ll just unbolt the cat and disconnect the muffler hangers and bird poop it off the car. I’ve also got a lot of flammables, with no paint cabinet, also a bin that has rags soaked in thinners etc. so will move that stuff out of the shed while welding. I’ve never done any exhaust work before, so if I survive this, I’ll be on to 3inches and faster sounding stuff Quote Link to comment Share on other sites More sharing options...
tortron Posted December 14, 2023 Share Posted December 14, 2023 If the fuel tank isn't leaking itl be fine Quote Link to comment Share on other sites More sharing options...
sheepers Posted December 14, 2023 Share Posted December 14, 2023 yea that changes things a bit. that photo is before repair i take it? tbh the repair looks pretty good, couple of gas holes in the surface which isn't too bad, tells you that 99% of the weld is homogenous and bonded to the parent fairly well. i still reckon it would be OK. Quote Link to comment Share on other sites More sharing options...
cletus Posted December 14, 2023 Share Posted December 14, 2023 The one with the red circles is the original one that I failed for poor casting The original pic is of a replacement upright that "is definitely not welded" Everyone I have shown the pic to says its welded I, 100% think it's welded based on what I can see in the pic The guy maintains its fine and just looks like that because he scotchbrited it Unfortunately because it's a cast suspension part, welding = no Bueno 2 Quote Link to comment Share on other sites More sharing options...
RXFORD Posted December 14, 2023 Share Posted December 14, 2023 18 minutes ago, cletus said: The one with the red circles is the original one that I failed for poor casting The original pic is of a replacement upright that "is definitely not welded" Everyone I have shown the pic to says its welded I, 100% think it's welded based on what I can see in the pic The guy maintains its fine and just looks like that because he scotchbrited it Unfortunately because it's a cast suspension part, welding = no Bueno It looks pretty obviously welded judging by the different shades. You could polish it which would make it even more obvious. Like 1500/2000g then a foam pad with polishing compound. Or request a hardness test on that area vs the area surrounding it. Welded area will most likely be way off unless they have matched filler rod to parent metal but even then I'd say hardness would be different. 3 Quote Link to comment Share on other sites More sharing options...
tortron Posted December 14, 2023 Share Posted December 14, 2023 Must be a heavy duty scotchbright to leave grinding marks in it no? Pro tip Flapdisk it down, then hit with a needle descale to make it look cast again 4 Quote Link to comment Share on other sites More sharing options...
SOHC Posted December 14, 2023 Share Posted December 14, 2023 Would anyone in Auckland have a Volkswagen beetle pedal assembly I could borrow or take a look at? Quote Link to comment Share on other sites More sharing options...
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