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Location:
Perth
Registered:
September 2003
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Re: modifiying original exhuast manifold
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Mon, 29 December 2003 03:52
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biggest problem is sag - custom turbo manfold suffer from this when they haven't been adequately braced if not heat treated.
brazing will work better than mig or arc welding a plate onto the cast manifold because you have to heat both metals up to a dull glow before welding - a mini heat treating. this changes the properties of the metal and lets it 'absorb' the braze better than say a mig or arc rod being arc-ed onto the metal. if the braze and it's joined metals are run over again to a dull glow after welding (without melting the braze) this will be a heat treated manifold and will last much longer than a mig welded manifold. done poorly though, it will prob crack as soon as you grab second gear. this is the reason most people choose a mig or an arc and brace the manifold. for the extra $100 though, i'd heat treat it all.
remember, a cast manifold will have to take the full weight of the turbo on this one weld. you should also make sure the metal you are welding to the manifold is not more than 50% thicker or thinner than the original manifold metal or it WILL crack.
good luck 
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| | Subject | Poster | Date |
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modifiying original exhuast manifold
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haydennz | Fri, 26 December 2003 22:19 |
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Re: modifiying original exhuast manifold
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feral4mr2 | Fri, 26 December 2003 23:28 |
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Re: modifiying original exhuast manifold
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haydennz | Fri, 26 December 2003 23:46 |
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Re: modifiying original exhuast manifold
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feral4mr2 | Sat, 27 December 2003 02:01 |
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Re: modifiying original exhuast manifold
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haydennz | Sat, 27 December 2003 02:11 |
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Re: modifiying original exhuast manifold
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Allan | Sat, 27 December 2003 02:24 |
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Re: modifiying original exhuast manifold
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feral4mr2 | Sat, 27 December 2003 05:51 |
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Re: modifiying original exhuast manifold
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oldcorollas | Sat, 27 December 2003 06:57 |
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Re: modifiying original exhuast manifold
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TE72_Turbo | Sat, 27 December 2003 03:48 |
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Re: modifiying original exhuast manifold
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onejayzed | Mon, 29 December 2003 03:52 |
