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Harry Ferguson Tractors Discussion Forum

TE20 Cracked Block

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Bob Prentice

06-30-2006 18:15:13

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A computerless friend has aTE20-Continental engine(Z120) with cracks in all three webs (upper&lower=6) between cylinders. The water jacket was 3/4 packed with sludge and perhaps overheating caused the cracks. The O-rings were hardened and fragile. He has looked for a Z120 block here in Canada without success.He is wondering if, with a good block cleaning, new O-rings and gaskets and some coolant sealant snake oil he might get away with it. Any thoughts or other solutions, or sources for Z120 blocks? John- you have no idea how long it took me to type this! Bob Prentice

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Bill Brox

07-05-2006 02:05:29

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Re: TE20 Cracked Block in reply to Bob Prentice, 06-30-2006 18:15:13

Hi, this is just a thought, and nothing I have ever done.
Would it be possible to get the cracks completely clean, by using brake cleaner or carb. cleaner or whatever terribly strong stuff, and then use Loctite 638, it is extremely strong. Or, maybe there is some other kind of stuff to glue it with.
Maybe the 638 is not thin enough to get into the cracks, as it is meant to fill rather large spaces.

Bill

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ZANE

07-03-2006 18:42:52

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Re: TE20 Cracked Block in reply to Bob Prentice, 06-30-2006 18:15:13

Those cracks were caused by freezing coolant.

I have a TO 20 Continental engine that has the lower web cracked between the cylinders. I removed the sleeves, cleaned everything up good. Drove lead into the crackes with a screwdriver, trimmed it where it squeezed into the bore. Put new sleeves and seals in it and put it all back together. I put a can of stop leak in it and antifreeze. That was in 1963. I have never let it be dry of coolant and it has never leaked. Actually the same antifreeze is still in it or at least part of it is the original I put in it back then. The top web was not cracked. I did think about trying to drill and install bolts through it but at the time I didn't have the stuff to do it with. I think that would fix it.

Zane

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John (UK)

07-01-2006 06:35:44

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Re: TE20 Cracked Block in reply to Bob Prentice, 06-30-2006 18:15:13

Ha Ha Ha, I can only imagine how long it took you Bob....If you have Windows XP it is possible to get it to type it for you if you just talk to it....Now theres a thought for you!

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Jerry/MT

06-30-2006 22:08:38

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Re: TE20 Cracked Block in reply to Bob Prentice, 06-30-2006 18:15:13

The repair cited in the other post was used in the past and was sucessful. My od engine had theis type of repair.
The more modern repair for this problem is a furnace braze repair. I have a remanufactured block with a furnace braze repair that is 5 years old and my TO-30 is a working tractor. I have had no problems with the engine since I installed it.
Check with a local machine shop that repairs industrial engines and ask them about a furnace braze repair. They are competitive with used blocks I believe and you get the added benefit of a stress relieved block that has been remachined and is ready to put together.

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mlm

06-30-2006 21:05:21

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Re: TE20 Cracked Block in reply to Bob Prentice, 06-30-2006 18:15:13

I have heard of a fix some dealers used years ago but I have never seen it done. Remove sleeves. Drill clear though the block. Clean the cracks and fill will sealer,such as gasket eliminator. Put threaded rods though the block and draw the cracks back together.
I think they used 3/4 inch rod. May need to grind the side of the threaded rods if the sleeves hit them.

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mlm

06-30-2006 20:23:47

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Re: TE20 Cracked Block in reply to Bob Prentice, 06-30-2006 18:15:13

I have heard of a fix some dealers used years ago but I have never seen it done. Remove sleeves. Drill clear though the block. clean the cracks and fill will sealer,such as gasket eliminator. Put threaded rods though the block and draw the cracks back together.
I think they used 3/4 inch rod. may need to grind the side of the threaded rods if the sleeves hit them.

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