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Cracked Block Repair

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Hartford Manning

03-13-2007 19:30:05

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Hi all,

I have been searching for a replacement block for my Super A which is cracked around the cylinder sleeves. I have this one which is cracked just behind the steering box (apparently the tractor was hard to start and was being pulled by another tractor hooked to the front end). Do you think this is repairable by a good welder? T_Bone had good suggestions last time. Your suggestions/ideas greatly appreciated. No luck with Steve at Ontario Used Tractor Parts.


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03-14-2007 09:30:39

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 Re: Cracked Block Repair in reply to Hartford Manning, 03-13-2007 19:30:05  
Just my 2 cents worth... I believe whether cast steel, or cast iron if the repair is done by someone that knows what they are doing the weld will be stronger than the surronding metal.. I do and have done many repairs like this in the past and present. Talk to a compitent welder and by using the correct rod and the correct technique the crack can be repaired to be as strong or stronger than new.. Tallperson

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Tom Windsor

03-13-2007 22:15:15

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 Re: Cracked Block Repair in reply to Hartford Manning, 03-13-2007 19:30:05  
It depends on what is on the other side of this crack. If it is in the water jacket and is cracked on both sides. Forget it. However, if it is not in the water jacket and is in the wall of the bottom end and only oil is splashing on it, I have repaired severl cracks like this. I ground out a groove and did them with a wire welder...welding this pot and then that spot being careful not to get it hot. After finishing the weld, I ground it down and went over it with JB weld to fill up the pin holes and then ground it down again. I have recently repaired a hole in a JD block by the same method. However, if you get over being cheap like me, there is technology out there and special rods that can do a first class job of this repair. I have seen steel welded to a cast block. HOWEVER, my preference is for a sound block without a weld and if possible, I would get one.

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03-14-2007 04:35:17

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 Re: Cracked Block Repair in reply to Tom Windsor, 03-13-2007 22:15:15  
tom, I have used some of these "new technology" rods. They are more costly then regular steel rods, but not bad. I bought a pack of I think it was 20 1.8" rods specially for cast iron for around $7. They work great, my bro did the welding on my cast ircon exhaust/intake on my 300u. Still holding up great. Ideally a noncracked block would be the solution. This crack looks like it could be structural. Does the superA have frame rails? If it doesnt and the crack is at a point near a mount, I wouldnt trust it. Seems welding cast is ok for nonstructural items. I wouldnt trust it structural unless it was done by a professional with credentials.

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Tom Windsor

03-14-2007 06:55:01

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 Re: Cracked Block Repair in reply to JayWalt, 03-14-2007 04:35:17  
I agree with this 200% because the welding that I do has no strength at all. It just stops up the hole.


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03-14-2007 06:53:02

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 Re: Cracked Block Repair in reply to JayWalt, 03-14-2007 04:35:17  
That is structural, there is no frame on a Super A and I would not trust a Weld to hold that. There are times when welding blocks is fine, I dont think this one. Blocks are not that hard to find. And I would feel a lot better knowiing that wasn't going to break again and maybe cause tragedy.

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03-13-2007 19:54:02

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 Re: Cracked Block Repair in reply to Hartford Manning, 03-13-2007 19:30:05  
If that were mine I would find me a good block. They are around. Look on ebay.

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03-13-2007 19:43:07

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 Re: Cracked Block Repair in reply to Hartford Manning, 03-13-2007 19:30:05  
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Hartford Manning

03-13-2007 19:33:16

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 Re: Cracked Block Repair in reply to Hartford Manning, 03-13-2007 19:30:05  
Looks like pictures did not attach. Have a look in "Stuck & Troubled" photos.



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