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1. [TR] cast iron welding question - 4A exhaust manifold (score: 1): Author: Alain <triumphworks@gmail.com>; Date: Wed, 22 Nov 2006 15:05:39 -0500; Speaking of welding. I recently was given a 4A exahust manifold that is cracked and actually separated. Is it even possible to successfully have this welded by a shop?? Thanks to all welders and meta; /html/triumphs/2006-11/msg00534.html (7,507 bytes)
2. RE: [TR] cast iron welding question - 4A exhaust manifold (score: 1): Author: "Randall" <tr3driver@ca.rr.com>; Date: Wed, 22 Nov 2006 14:08:59 -0800; It's possible, but tricky and likely to break again. The manifold should be bolted to something to hold it in the correct shape, and then pre-heated almost to welding temperature, welded and then co; /html/triumphs/2006-11/msg00535.html (8,861 bytes)
3. Re: [TR] cast iron welding question - 4A exhaust manifold (score: 1): Author: Alain <triumphworks@gmail.com>; Date: Wed, 22 Nov 2006 17:26:14 -0500; Thanks for all your great answers and combined expertise. I may see if a welding class at the local university that has a welding lab wants to experient with it on their penny. Thanks and Happy Thank; /html/triumphs/2006-11/msg00536.html (10,222 bytes)
4. Re: [TR] cast iron welding question - 4A exhaust manifold (score: 1): Author: DLylis@aol.com; Date: Wed, 22 Nov 2006 21:25:02 EST; I have always understood that welding (or attempting) cast iron is a waste of time as the expansion rate of the metal is significantly different than the repair and it will only crack again. == This; /html/triumphs/2006-11/msg00541.html (7,433 bytes)
5. RE: [TR] cast iron welding question - 4A exhaust manifold (score: 1): Author: "Randall" <tr3driver@ca.rr.com>; Date: Wed, 22 Nov 2006 18:39:39 -0800; Which is why all the mucking about with special rods (to get the expansion rate) and pre-heating/post-slow-cooling (to minimize resulting stress in the weld). I have seen a manifold that was success; /html/triumphs/2006-11/msg00545.html (8,713 bytes)
6. Re: [TR] cast iron welding question - 4A exhaust manifold (score: 1): Author: Chris Kantarjiev <cak@dimebank.com>; Date: Thu, 23 Nov 2006 10:15:31 -0800 (PST); It can certainly be done. Read a description of one successful cast iron repair at http://www.dimebank.com/FrankenLathe.html (search for 'welded' if you don't want to read the whole thing :-) It's a; /html/triumphs/2006-11/msg00554.html (8,469 bytes)

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