Has anyone welded cast turbo elbow i have
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Only know of one job like that that held he heated the item in his oven then got it well hot with a torch done the weld then back in the oven for hours on a slow cool down all was good it was on a mgb with a tubo d 1.8 in it
#6
whats the best way to stress it cos iv heated it back up and been hitting it with a hammer to try and crack it
does anyone no what its actually made of? because with the mig on its highest setting it welded perfect, not one crack and penatrated rite through
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thare cast iron seen it done with stick and correct rod type but not mig ????
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i know a guy the modded a standard let turbo manifold, cut it at the kneck and welded a t3 flange onto it, he heated it up before hand to try and stop is cracking, then used mig brazing wire on it, think it held up for ages but he suported the turbo so there asnt alot of stress on it.
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Mig weld is no good on cast mate,it needs to be done with a cast rod mate and there are not many peeps around who do it well thats in nottingham anyway i found two companys that would do it and it's not that cheap i had my old mans cosworth manifold done it had a 2" crack in it and it cost about £50.
#16
its not the actual manifold, its the elbow that goes down to the downpipe, i used gassless mig wire because i read that this works better,
does it crack straight away?
i heard no tink tink noises and the welds are still perfect, it also penatrated really well so was wondering if it had i high steel content
does it crack straight away?
i heard no tink tink noises and the welds are still perfect, it also penatrated really well so was wondering if it had i high steel content
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When the steel from the mig cools down it does so much faster than the cast and contracts, you may hear some tinkling noises coming from the casting as it cools, the noise is cracks forming, the best way to weld cast with mig is to braze it, you need to heat the cast up to over 700degrees and then let it cool down very slowly in an over to save the cracking. BUT mig is by far the best way to weld cast and it should be done properly.
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not Sure if it'll hold mate we do a bit of work restoring old gates and the like. Normally we'd just grind out the crack heat the whole item till it just starting turn red weld it with a dissimler metal rod them keep gently heating it and leave it in a bucket of sand to cool down, Migs are normally notgreat for cast cause all the heat is concentrated on one spot.
BUt on the other hand ya might be surpised a lot depends on the actuall iron nickle content and other things in metal
BUt on the other hand ya might be surpised a lot depends on the actuall iron nickle content and other things in metal
#22
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As capri zetec 170 says, best heating the material before welding and then using a dissimilar welding rod with an arc welder, not mig and let cool down gradually, this is the best way for cast materials.
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ive welded cast before with a mig and has been fine, just heated it up till it was glowing, also filled a chamfure on to both faces to get better penatration.
that was welding a zetec flange onto a rs turbo manifold and it was fine,
give it a go, it it leaks \ cracks then you can use it to mock up a steel one, just get some flanges and a bit of bent tube.
lee
that was welding a zetec flange onto a rs turbo manifold and it was fine,
give it a go, it it leaks \ cracks then you can use it to mock up a steel one, just get some flanges and a bit of bent tube.
lee
#28
ive welded cast before with a mig and has been fine, just heated it up till it was glowing, also filled a chamfure on to both faces to get better penatration.
that was welding a zetec flange onto a rs turbo manifold and it was fine,
give it a go, it it leaks \ cracks then you can use it to mock up a steel one, just get some flanges and a bit of bent tube.
lee
that was welding a zetec flange onto a rs turbo manifold and it was fine,
give it a go, it it leaks \ cracks then you can use it to mock up a steel one, just get some flanges and a bit of bent tube.
lee
nice to see somebody who its worked for,
i cant do it in steel tho as its part of the wastegate housing
did u have any cracks or problems?
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