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Urgent help needed. Cracked engine block

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Tom

04-23-2002 12:15:56




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Hi,
I´ve got a few questions:
I´ve the chance to buy a ´56 FMD, the problem is that the engine block has been welded, the owner says it was done in 1976 was used until 2000 without any problems.
Could a welded block be a problem?

"How white" does the thing smoke if it burns water? I started it and ran it for about five or ten minutes and couldn´t recognize a white smoke, only black/blue.
But perhaps its difficult to see the white smoke?

Could i see the water in the motor oil on the dipstick, or do a have to drain the oil?

The engine runs really well, never seen a fmd that runs so smooth and starts easily.

How else could i find out, if there still is a crack on the inside of the block?

Thanx for your help
regards Tom

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Paddy

04-25-2002 05:04:38




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 Re: Urgent help needed. Cracked engine block in reply to Tom, 04-23-2002 12:15:56  
To be sure you have no cracks in the block you have to have it crakc tested, but that is expensive. Best thing to do, is to just put some stuff that seals cracks in to your water system and that will seal up any cracks around the water ways. Put in through your thermostat housing tho, not thru the radiator.
If you take the cylinder head off, it could be cracked between the cylinders on the block, just look for small black lines there.
Water in your engine oil will cause it to go milky on colour and will cause the dipstick to rust in places.
Sounds like theres a little wear around your rings, but it doesn't sound too bad cos it starts easily.
Hope this helps

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Peter Tatham

04-23-2002 23:54:05




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 Re: Urgent help needed. Cracked engine block in reply to Tom, 04-23-2002 12:15:56  
Tom, You should be able to see where the block was welded. Start the engine and run it up to working temperature. As the engine heats up, look for any signs of water seeping from around the weld - if there is a leak it will show when the engine is hot and the cooling system up to pressure. White smoke in the exhaust would be obvious, Blue smoke is usually caused by worn liners/rings as oil is getting past the rings and is being burned. Black smoke is usually down to the fuel system - injectors and or pump may need servicing. From what you describe I dont think you have too much to worry about with this tractor.

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Ronald S. Sagnip

04-24-2002 05:59:42




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 Re: Re: Urgent help needed. Cracked engine block in reply to Peter Tatham, 04-23-2002 23:54:05  
check the coolant for signs of oil around the top of the filler cap. This would point to a headgasket leak which happens occasionally with these engines. If it starts easily then I would have the valves reset and see how it runs. You could always pull the head and have it rebuilt. This is an industrial engine so it's worth going the extra mile.



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Bill S.

04-24-2002 20:09:46




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 Re: Re: Re: Urgent help needed. Cracked engine block in reply to Ronald S. Sagnip, 04-24-2002 05:59:42  
I agree that there is little reason to worry about that engine. Often freeze cracks are to the outside as that's the weakest direction. Many many blocks have been welded especially in the days when antifreeze was considered too costly and people would forget to drain the engine on cold nights. Since the advent of high performance epoxys it's much easier to clean the metal and seal the crack with epoxy. I had a JD 40 for many years that had epoxy over a crack, the previous owner told me it was that way when he became the owner without any problem. I too had no problem however before a repaint I cleaned the then peeling but not leaking repair then reworked it with PC-7 after grinding to clean iron. When I sold the tractor 2 years back it was still leak free. Sorry for the ramble. Bill

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