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Cast Iron Welding
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Rootes75



Joined: 30 Apr 2013
Posts: 3149
Location: The Somerset Levels

PostPosted: Thu Apr 11, 2019 10:16 am    Post subject: Cast Iron Welding Reply with quote

Does anyone have any experience of using companies to weld/stitch cast iron cracks and fractures?

I have googled and there are a few companies out there who offer services for vintage vehicles.
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Rick
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Joined: 27 Apr 2005
Posts: 21782
Location: UK

PostPosted: Thu Apr 11, 2019 12:15 pm    Post subject: Reply with quote

Big Dodge's engine block required a lot of stitching, including down behind a liner in one cylinder which took some doing. Lockstitch did it all, although a few places do it I believe.

http://www.oldclassiccar.co.uk/dodge_rebuild/part11_engine.htm

Twelve years ago now - yikes!

The head also received a lot of work to make it good again, including the replacement of a large section where it had frost damage. After a few years it did begin to seep from the stitches, however by that time I'd tracked down a replacement head so had it skimmed, and fitted it myself, the original is now back on the shelf "just in case".

RJ
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Rootes75



Joined: 30 Apr 2013
Posts: 3149
Location: The Somerset Levels

PostPosted: Thu Apr 11, 2019 1:03 pm    Post subject: Reply with quote

My first quote is back, to do the 2" break on the neck the the housing, £354 ex VAT and postage!?!

I expect it to be expensive but not that expensive!
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badhuis



Joined: 20 Aug 2008
Posts: 1198
Location: Netherlands

PostPosted: Thu Apr 11, 2019 4:24 pm    Post subject: Reply with quote

A competent welder should be able to weld it. You could bring it to my friend who has been doing repairs to cast iron blocks before and would do it much cheaper. Snag is he is in the south of the Netherlands.
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47Jag



Joined: 26 Jun 2008
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Location: Bothwell, Scotland

PostPosted: Fri Apr 12, 2019 3:55 pm    Post subject: Reply with quote

If itís a non stressed component like a water manifold I would have thought brazing would be adequate.

Art
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Rootes75



Joined: 30 Apr 2013
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PostPosted: Fri Apr 12, 2019 4:26 pm    Post subject: Reply with quote

Its the part of the thermostat housing that the top radiator pipe fits on, it has to be watertite.
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1947 Hillman Minx
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47Jag



Joined: 26 Jun 2008
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PostPosted: Fri Apr 12, 2019 7:52 pm    Post subject: Reply with quote

Rooted,

Brazing is just using brass filler rod and is easily hand finished with a file and itís cheap. Thatís the way I would go.

Art
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Rootes75



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PostPosted: Sat Apr 13, 2019 9:12 am    Post subject: Reply with quote

I am just concerned that when the pipe is re-fitted and the jubilee clip is tightened it could crack the brazing. The fracture is quite large so would require a section of metal brazed or welded back in place.
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Rick
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Joined: 27 Apr 2005
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Location: UK

PostPosted: Sat Apr 13, 2019 9:27 am    Post subject: Reply with quote

Rootes75 wrote:
I am just concerned that when the pipe is re-fitted and the jubilee clip is tightened it could crack the brazing. The fracture is quite large so would require a section of metal brazed or welded back in place.


Big Dodge's cylinder head had an in-period brazed repair along its length, which had given way over the years, so I'd be inclined to go with something more long-lasting IMO. Is there no possibility of finding a replacement housing?

RJ
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Rootes75



Joined: 30 Apr 2013
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Location: The Somerset Levels

PostPosted: Sat Apr 13, 2019 10:18 am    Post subject: Reply with quote

I have adverts out in the UK looking for the housing, I have also gone out to my friends in NZ and OZ.

The housing is peculiar in only being used on this engine and only between 1948-51.

I have considered drawing up a housing to suit using a more modern thermostat and then having it machined out of aluminium.
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alastairq



Joined: 14 Oct 2016
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Location: East Yorkshire

PostPosted: Sat Apr 13, 2019 11:14 am    Post subject: Reply with quote

.......or, what about 3D printing?
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Rootes75



Joined: 30 Apr 2013
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PostPosted: Tue Apr 16, 2019 4:55 pm    Post subject: Reply with quote

We have a 3D printer at work.....
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