Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: JamesV6CDX on 02 October 2013, 17:12:17
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I can't seem to get a used manifold anywhere. Mine has a pretty clean long crack on top. Can they be welded?
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Exhsust manifold by the way...
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They can but I think it needs special rods and or welder......
http://www.mig-welding.co.uk/cast-iron.htm
Might help James..... means nothing to be but then again no surprise there ;D ;D
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I can't seem to get a used manifold anywhere. Mine has a pretty clean long crack on top. Can they be welded?
with out any problems
think mig welder should do job
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Are they cast iron? If so get a professional welder on it. Which will mean removal I would have thought.
Roger Clarke is the man in Reading when it comes to welding. He'll moan it can't be done etc, then proceed to do a top notch job. ::)
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When welding cast iron, I'd say that you need to use a 'stick'/arc (MMA) set, with a cast rod but you have to heat the manifold up first, otherwise, because of thermal shock, you'll end up with a nice crack along side your nice new weld ....... been there - done that a few times in the past. ;) ;)
If you're paying someone else to do if for you, I reckon that cost wise, you'd be better off with A N Other manifold .... obviously assuming you can get hold of one.
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are we talking about 3.0 manifolds or 3.2
as this to different type of steal
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are we talking about 3.0 manifolds or 3.2
as this to different type of steal
2.2 :y
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There a nightmare to weld!
Hi Carbon arc rod is what is required.
The only thing working in your favour is that your not looking for a structualy strong weld, just a gas tight one.
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if anybody notices this---Frost Restoration--they do a special stuff for cracked manifolds and blocks-dont know why i bother as nobody ever checks out---have used the stuff on mine and guess what--------it works---and maybe thats to simple
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This one?
http://www.frost.co.uk/j-b-high-heat-adhesive.html (http://www.frost.co.uk/j-b-high-heat-adhesive.html)
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does anyone know whether you have to clean the crack/split before applying, if so what would you use ?
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if anybody notices this---Frost Restoration--they do a special stuff for cracked manifolds and blocks-dont know why i bother as nobody ever checks out---have used the stuff on mine and guess what--------it works---and maybe thats to simple
Are these the rods? http://www.frost.co.uk/automotive-welding-tools/hts-528-brazing-rods.html (http://www.frost.co.uk/automotive-welding-tools/hts-528-brazing-rods.html)
They describe them as brazing filler rods so I assume you need oxyacetelyne kit to use them :-\
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if anybody notices this---Frost Restoration--they do a special stuff for cracked manifolds and blocks-dont know why i bother as nobody ever checks out---have used the stuff on mine and guess what--------it works---and maybe thats to simple
Are these the rods? http://www.frost.co.uk/automotive-welding-tools/hts-528-brazing-rods.html (http://www.frost.co.uk/automotive-welding-tools/hts-528-brazing-rods.html)
They describe them as brazing filler rods so I assume you need oxyacetelyne kit to use them :-\
This stuff more looks like average goo through?
This one?
http://www.frost.co.uk/j-b-high-heat-adhesive.html (http://www.frost.co.uk/j-b-high-heat-adhesive.html)
Be interested to see if it works, as I think FatherT's manifold has a crack. As it's noisey when cold, fine when hot.
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does anyone know whether you have to clean the crack/split before applying, if so what would you use ?
No expert but i thought the crack had to be ground into a V for the weld :-\
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......
No expert but i thought the crack had to be ground into a V for the weld :-\
Ideally yes, you get better penetration that way, but on something like the outside of a manifold it's perfectly acceptable to build the weld up & leave it. A weld prep is needed in places where you'd need to grind the weld back flush again eg on the mating face of the manifold where it bolts to the head.
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I'd give the High Heat Adhesive a go as it'll be quick, easy and cheap! :y
As Mark has pointed out it only needs to be gas tight and it's been used and recommended by Symes!! :y
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I'm going to try that adhesive as mine has a crack and although i've got another manifold for it i am too scared of shearing off bolts to replace it!!
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So do the 2.2 manifolds seem to all crack in the same place :-\
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If welding it then you need a U prep rather than a V.
For both welding and any other repair method, a small hole should be drilled first at both ends of the crack to stop the crack propagating in the future (a hole has no corners and hence no points where a stress riser can form)
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So do the 2.2 manifolds seem to all crack in the same place :-\
2.0 crack as well . Normally in the middle top or bottom .