dubwarrior2
Part of things
"Open up, its the filth"
Posts: 576
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I have this V70 manifold to go in my vw t4 2.5 but I need to cut the ends off and swap them over. Assuming I can find somebody to do it, how hard is this stuff to weld?  |
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dubwarrior2
Part of things
"Open up, its the filth"
Posts: 576
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The engine is already rebuilt and fitted but I think it will work better if switched  |
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It is horrible stuff to weld, and swapping the inlet to other end isnt as easy as it sounds.
Is there not another manifold that would work better?
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1988 Mercedes w124 superturbo diesel 508hp
1996 Mercedes s124 e300 diesel wagon
1990 BMW E30 V8 M60 powered!
1999 BMW E46 323ci project car
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It is horrible stuff to weld, and swapping the inlet to other end isnt as easy as it sounds. Is there not another manifold that would work better? The one used on the C4 A6 2.5 TDI is the opposite way around. These engines were also used in various transporters so the “correct” part should also exist, though I don’t know what the transporter ones look like Edit: A6 engine codes are AAT (115 hp) and AEL (140 hp) I think the manifolds are the same for both. |
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1967 Triumph Vitesse convertible (old friend)
1996 Audi A6 2.5 TDI Avant (still durability testing)
1972 GT6 Mk3 (Restored after loong rest & getting the hang of being a car again)
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Apr 10, 2019 17:27:32 GMT
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Not clear on why it is seen as difficult to weld? The only issue I see with welding stuff like this is that oil is going to be hard to get rid of. Commercially it would go in an oven to bake-off any volatiles. I am also making the assumption that the material is not some weird alloy.
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Apr 10, 2019 18:08:51 GMT
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Probably won't know what its like to weld until someone tries . Should be ok , don't expect it to look like a million bucks though .
Go ask someone ! Obviously you will have to take a risk of it potentially cracking or something in the future but you would just have to cross your fingers.
Oils not a problem as people have things called grinders and solvents etc , no need for special ' ovens ' !!!
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Apr 10, 2019 18:55:05 GMT
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Probably won't know what its like to weld until someone tries . Should be ok , don't expect it to look like a million bucks though . Go ask someone ! Obviously you will have to take a risk of it potentially cracking or something in the future but you would just have to cross your fingers. Oils not a problem as people have things called grinders and solvents etc , no need for special ' ovens ' !!! You have not welded an aluminum casting then. Royal PITA to get the things clean enough to TIG. Pretty much any oil is going to contaminate the Argon shield gas. Furthermore, any volatiles that convert to vapors at the high temps are going to cause eruptions as the super-heated vapor leaves the weld pool or becomes entrapped in the weld-pool leaving porosity. You can use a torch if you don have a proper oven but just grinding and wiping with acetone is chancy. One source for skilled alloy welders at a reasonable rate are the people who do alloy wheel repair. Some will even do house calls. |
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Apr 10, 2019 21:03:44 GMT
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That is the biggest problem with it, you just cant get it clean enough. Those manifolds are made of a really cheap nasty grade of alloy, which seems almost porous. It's as if the oil has soaked into the metal and just want's to spit back at you.
Then there is the problem that the cut off part never quite fits at the other end properly, so it always looks hideous and takes ages.
If there is an off the shelf solution always go that route first.
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1988 Mercedes w124 superturbo diesel 508hp
1996 Mercedes s124 e300 diesel wagon
1990 BMW E30 V8 M60 powered!
1999 BMW E46 323ci project car
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Apr 11, 2019 17:46:12 GMT
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Probably won't know what its like to weld until someone tries . Should be ok , don't expect it to look like a million bucks though . Go ask someone ! Obviously you will have to take a risk of it potentially cracking or something in the future but you would just have to cross your fingers. Oils not a problem as people have things called grinders and solvents etc , no need for special ' ovens ' !!! You have not welded an aluminum casting then. Royal PITA to get the things clean enough to TIG. Pretty much any oil is going to contaminate the Argon shield gas. Furthermore, any volatiles that convert to vapors at the high temps are going to cause eruptions as the super-heated vapor leaves the weld pool or becomes entrapped in the weld-pool leaving porosity. You can use a torch if you don have a proper oven but just grinding and wiping with acetone is chancy. One source for skilled alloy welders at a reasonable rate are the people who do alloy wheel repair. Some will even do house calls. I assure you i have ! A lot . As i said ist possible it just will not most likely look like a perfect neat even weld . |
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voodoo57
Club Retro Rides Member
That's not 2 metres! come a little...Closer!
Posts: 2,751 
Club RR Member Number: 137
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Apr 11, 2019 18:57:33 GMT
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Have you tried the Brickyard forum? I entered 2 stroke in diesel engines and this was the 1st one on the list, it was mainly T25's etc... someone on there may be able to help you out?
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Apr 11, 2019 20:01:10 GMT
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We used an intake from a 2.4 vw lt diesel on a 2.5 tdi engine. Just grind the first 'leg' off and weld it shut.
That intake has a big rubber 'stop' that you can switch from side to side so you can use both sides.
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