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Metal stitching 06 Oct 2011 21:36 #63879

  • mammoth
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Does anyone know a firm that either does metal stitching to repair cracked cylinder water jackets or supplies consumables for me to do the repairs.
Epoxy is garanteed only up to 60 degrees c on the wet side and weld or brazing is likely to make things worse, especially as wastage on the inside has made the wall thin in places.

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Re: Metal stitching 06 Oct 2011 21:50 #63880

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Mammoth
Gudday M8

Down sth here eye'd imagine th@

Head Mod Nominees Pty. Ltd.
5 MONTEREY RD
DANDENONG
Victoria 3175 Australia.
Ph: +61.3 9797 1111

may do it .......... or steer U in the right direction

ifn U into glu n stuff
try the best
JBWeld ........Yanky stuff available @ selected outlets


Cya
[ch9786]
OF ALL THE THINGS EYE MISS ................. EYE MISS MY MIND THE MOST

There's more WORTH in KENWORTH

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Re: Metal stitching 06 Oct 2011 22:00 #63881

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Most engine reconditioners will be able to do that repair for you. They would probably also supply just the plugs if you wanted to do it yourself but I doubt many would lend you the tapered taps (you would need to buy your own)

If you want to do it yourself, Ayross trading sell the plugs, tapered taps etc.

www.ayross.com.au/engine-rebuilding.html

If you have never done this type of repair before, and your item is somewhat hard to replace then I recommend that you get someone experienced to do the repair (as once a stitch repair has been attempted and it fails then it's usually not easy to fix). We always used to pressure test the repair on a proper pressure tester that circulated pressurised coolant at engine operating temperature.

-Stu


[ch729][ch647]sod [ch654][ch623] s[ch305] [ch477]u[ch305][ch1503] s[ch305][ch613][ch647] [ch653]o[ch

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Re: Metal stitching 06 Oct 2011 23:50 #63882

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Mammoth, what's wrong with boring the block out and inserting a sleeve? If the water jacket is thin in numerous other places, won't it soon corrode through in those other places as well??

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Re: Metal stitching 07 Oct 2011 19:28 #63883

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the cracks are from frost on the outside and fortunately the bores and pistons are pretty good. I have asked around engine reconditioners but the usual response in this throw away age is that "all the old fellas have died". I have a rough estimate from a mob in Sydney who can also cast pieces of iron to stitch in; $2.000 to $3,000. Obviously experts but phew, that price hurts.
I will follow up the Ayross lead. I am also onto www.lockinstitch.com in the States whose products look more specific to the task. They make it look easy on Utube anyway.

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Re: Metal stitching 07 Oct 2011 20:03 #63884

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Mammoth, I'll stand by my Magna cast iron rods to fix any busted cast iron, for about 1% of the cost of any other method of fixing.

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Re: Metal stitching 08 Oct 2011 11:36 #63885

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Is Magna still available? Ours is all gone, have yet to find as good elsewhere. I thought the main man disappeared in South America years ago. David.

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Re: Metal stitching 08 Oct 2011 11:53 #63886

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David - Magna electrodes are still available, they never have any storefront, they use travelling commission agents to sell their products. There's still a Magna commission agent in Perth.
You just need to see the bank manager about an overdraft, before you buy a packet .. ;)

www.whitepages.com.au/business/magna-wel...Magna+Welding+Alloys

Magna Welding Alloys .. www.magnagroup.com/products/magna/

Magna 770 cast iron welding electrode .. www.magnagroup.com/products/magna/pdf/literature/dis_770.pdf

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Re: Metal stitching 08 Oct 2011 17:40 #63887

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Ron, Thanks for that info. Regards David.

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Re: Metal stitching 10 Oct 2011 19:26 #63888

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Some pics of the two cylinder blocks. Interstater might be helping me on this one.

Thye worst crack

big hole above inlet port

chalk indicates extent of hairline on this one

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