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Location: Kita-Ku, Sapporo, Japan
Registered: January 2003
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Re: modifiying original exhuast manifold
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Sat, 27 December 2003 06:57

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the problem with welding and braxing a cast iron manifold, is that there is a large change in composition across the join, which can lead to a weaker structure.
basically, cast iron has a lot of carbon in it, maybe around 4-5%, whereas mild steels are around 0.2%. between these two compositions there are some brittle structures (basically the hypereutectic compostions with respect to pearlite). it IS possible to successfully weld to cast iron, but it helps to have a filler metal with high carbon content, and to have the correct heating, cooling, and possibly heat treatment steps.
i would suggest that you should always support heavy items with stays.... since you have a few kgs haning off a couple of bolts at a reasonable distance from the motor....
Cya, Stewart
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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 |