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Tractor Talk Discussion Forum

Cracked block in Farm Show Magazine

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Willy P

02-01-2005 07:19:27




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I was reading the new Farm Show magazine and it had a article where a man said he repaired cracked blocks by cleaning it buff or grind it a bit and then use a shop vac to suck caulking in,the caulking will expand and contract with the cast iron and the block will never leak again. Anybody ever tried this? What kind of caulking would you use? I would think that the thermostat needs to come out and then put the vac on that hose? Any comments? Thanks

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Willy P

02-02-2005 09:34:17




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 Re: Cracked block in Farm Show Magazine in reply to Willy P, 02-01-2005 07:19:27  
Sorry it has been awhile for I could get back to the computor,No I am not going to sell the tractor,I bought it 2 years ago and the block was cracked at the water jacket on the outside and I JB Welded it and worked for awhile and now just seeps out when it gets hot,I guess I need to go back in there and heat it up with a torch and put some more JB on it. Sure it leaks a little water but water is cheap,usually have to put a gallon in it every day until the engine needs a overhaul. It is a IH 1066. Thanks

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Jerry/MT

02-01-2005 11:22:46




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 Re: Cracked block in Farm Show Magazine in reply to Willy P, 02-01-2005 07:19:27  
The modern way to fix a cracked block is to furnace braze it. Almost all the remanufactured blocks that you can get today are repaired by this method. It has the added benefit of stress relieving the casting so it may even be better than new. I have a Continental 129 engine on my TO-30 that was rpaired with this technique and I have seen a Case backhoe/loader repaired by this method and they run like new. Personally, I have never seen block sealers provide anything but a temporary fix at best.

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Carlton

05-24-2005 21:56:27




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 Re: Cracked block in Farm Show Magazine in reply to Jerry/MT, 02-01-2005 11:22:46  
who does the furnace brazing? I have a small crack and only leaks out a small amount of water while running. I would like to get it fixed so it will last.
carlton
Clancy Mt.



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dr.sportster

02-02-2005 07:42:14




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 Re: Cracked block in Farm Show Magazine in reply to Jerry/MT, 02-01-2005 11:22:46  
My block would go to Jerrys guy for proper method of repair.Fixed and not to be worried about again.



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mud

02-01-2005 13:47:53




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 Re: Cracked block in Farm Show Magazine in reply to Jerry/MT, 02-01-2005 11:22:46  
Was the Case industrial engine block cracked, or was there a hole punched in it from a connecting rod? Who repaired it?



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Redmud

02-01-2005 09:29:55




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 Re: Cracked block in Farm Show Magazine in reply to Willy P, 02-01-2005 07:19:27  
There are lots of ways to repair cracked blocks without welding, this is just one of them.



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dr.sportster

02-01-2005 11:28:31




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 Re: Cracked block in Farm Show Magazine in reply to Redmud, 02-01-2005 09:29:55  
I would call one a patch and the other a repair.Also there are better products to do this than silicone sealer or J-b weld.Titanium putty might be one It is a much larger container and made for emergency iron repairs.Look in the MSC catalog for some other choices.



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Rick

02-01-2005 09:05:25




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 Re: Cracked block in Farm Show Magazine in reply to Willy P, 02-01-2005 07:19:27  
Bull



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Jack B. Nimble

02-01-2005 09:17:45




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 Re: Cracked block in Farm Show Magazine in reply to Rick, 02-01-2005 09:05:25  
An improvement on that idea is to warm the area with a torch(NOT HOT JUST WARM). Then do the vacuum thing but use JB weld instead of caulk, after you have sucked some epoxy into the crack leave a small bead of JB on the surface and pass a propane torch over the top to warm it just enough that the epoxy becomes runny an smooth. Let it cool and cure and the problem is solved. This may not be a proper fix but it will work for what could be forever on a non structural part like a water jacket.

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dr.sportster

02-02-2005 07:38:29




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 Re: Cracked block in Farm Show Magazine in reply to Jack B. Nimble, 02-01-2005 09:17:45  
Jack,Dont get mad at me but your calling the engines crankcase non structual.It does not get much more structual than that.



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Jack B. Nimble

02-02-2005 08:36:07




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 Re: Cracked block in Farm Show Magazine in reply to dr.sportster, 02-02-2005 07:38:29  
O.K Dr. If you read the post again carefully you will notice I pointed out "WATER JACKET" which is the thin cast iron part that surrounds the crankcase and is NOT a structural part of the engine. It would not even need to be there for the engine to run except for cooling purposes. Now obviously if the crack is through a "structural" part such as a mounting boss or beefed up brace area you should rethink fixing it at all and instead look for a replacement.

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dr.sportster

02-01-2005 08:40:47




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 Re: Cracked block in Farm Show Magazine in reply to Willy P, 02-01-2005 07:19:27  
I guess the beauty of that is that you do not have to send it out to be done.I realize that it MAY never leak but it could.Personally I would take my block to someone specializing in block welding.A weld makes it a much more solid repair.Silicone sealers can cause blockages in oil ways but we are talking about the water jacket so that wont matter.Just think about the peace of mind;A weld:metal has reached a molten state and has become all one or sealant sucked in with vac.I believe you would suck at the thermostat hole as you stated.In my opinion on sealer I use the aluminun color from a home improvment store.Hey it might work great with sealer but once its welded you dont have to think about it again.Cost wise silicone beats welding by far.But its your engine.

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Mike M

02-01-2005 08:19:28




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 Re: Cracked block in Farm Show Magazine in reply to Willy P, 02-01-2005 07:19:27  
Sounds like a temporary patch at best. What's his name so I don't buy anything from him ?



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dr.sportster

02-01-2005 08:45:19




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 Re: Cracked block in Farm Show Magazine in reply to Mike M, 02-01-2005 08:19:28  
Does he sell the tractors when he is done the work?This relates to the buying sight unseen thing again.I dont want a cracked block on something Im buying.Oh well.



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Mike M

02-01-2005 10:00:30




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 Re: Cracked block in Farm Show Magazine in reply to dr.sportster, 02-01-2005 08:45:19  
I agree, if I buy do buy something with a known cracked head or block I deduct enough from the price to fix it right. This is the biggest thing I fear in a sight unseen sale. I have looked at plenty of local tractors for sale that had cracks and patches so I know it is a big problem area and I don't think it is isolated to my area ,Ohio,
but I can't remember ever seeing one advertised here or on e-bay that stated it had a cracked block or head and this makes me very leary.Once a crack always a crack and very hard to keep antifreeze from seeping.

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