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Welding engine block


 
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Bill from Scotland
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PostPosted: Wed Jun 26, 2019 2:18 pm    Post subject: Welding engine block Reply to specific post Reply with quote

I've a frost damaged engine block, large chunk out the side of the engine. I'm guessing it will weld but develop small cracks as it cools. Could the repair be coated by JD weld and a can of internal sealant be poured into the cooling system. What are the chance this will work?
 
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Steve@Advance
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PostPosted: Wed Jun 26, 2019 2:41 pm    Post subject: Re: Welding engine block Reply to specific post Reply with quote

It might work, but then it might not...

There could be other damage elsewhere too.

If it's yours, and just want to give it a try, not much to loose at this point.

If it's a large flat area, I've seen a plate bolted in place with a thick gasket or epoxy behind it.

The sealer will stop small leaks. Follow the directions, most require a pressurized system to work, so be sure the thermostat and rad cap are good.
 
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Stephen Newell
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PostPosted: Wed Jun 26, 2019 2:58 pm    Post subject: Re: Welding engine block Reply to specific post Reply with quote

Probably anything you do for it won't hold. If you can't find a replacement block you might try lock and stitch and then braze the seam. If you have chunks out I don't see how you could not have water jacket issues you wouldn't be able to get to.
 
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teddy52food
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PostPosted: Wed Jun 26, 2019 4:49 pm    Post subject: Re: Welding engine block Reply to specific post Reply with quote

I had a 67 440 Chrysler that broke a rod & put a hole in each side under the water jacket. I broke up & ground pieces of cast to fit the holes. Welded a little at a time with 99 nickel rod. Put another 80 or 90 thousand on it before I sold it.
 
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VicS
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PostPosted: Wed Jun 26, 2019 5:16 pm    Post subject: Re: Welding engine block Reply to specific post Reply with quote

I've got a fortune in a block with a hole 3". I cleaned it with alcohol, dried it with air. Then laid screen wire over the hole pushed it down into the hole a little then put another piece over the top. JB Welded it 1/2" deep. Hope it holds a long time.
 
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george md
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PostPosted: Thu Jun 27, 2019 7:34 pm    Post subject: Re: Welding engine block Reply to specific post Reply with quote



Do yourself a big favor , don't weld it . Look on line for lock n stitch

pins , they work. If you need more info send me an email and I'll send you some

pictures. I did a 427 ford side oiler last year , took 125 pins but when done

it did not leak under pressure . It was cracked in both banks.



Beginning the lock n stitch repair





georger
 
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David G
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PostPosted: Fri Jun 28, 2019 5:09 pm    Post subject: Re: Welding engine block Reply to specific post Reply with quote

Unless it is irreplaceable, just easier to get a different block.
 
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M-MAN
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PostPosted: Sat Jun 29, 2019 2:40 am    Post subject: Re: Welding engine block Reply to specific post Reply with quote

I have seen several Deere's with big chunks like that welded back in. Some were done with plain old 7018 and held up fine. Depends on cleanliness and your welding skill. No it isn't the prettiest but it works.
 
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jtwat
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Joined: 24 Oct 2007
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Location: Florida

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PostPosted: Mon Jul 01, 2019 7:56 pm    Post subject: Re: Welding engine block Reply to specific post Reply with quote

Go to www.muggyweld.com
They have welding rods that work on cast.
 
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jtwat
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PostPosted: Mon Jul 01, 2019 7:59 pm    Post subject: Re: Welding engine block Reply to specific post Reply with quote

https://www.muggyweld.com/
 
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