John Deere 3020 engines block

Todd1969

Member
Sorry guys fogot to put in some information the block is cracked between 2&3 cylinders in the liner counter bore. Tried to post picture but did not go through.
 

Not a problem. The short block we got I mentioned in the previous post was cracked at all 3 cylinder joints in the counterbores. They were braised and remachined. Tractor is still running strong, although it no longer does the hard lugging work any more. Just augers and shuttling wagons.
 
I had a 3020 of my dad's that over heated grinding feed it stuck a piston pulled it in half cracked a liner and the block. Cracked the counter bore all the way to a Head bolt hole. And we have been running it. For 16 years .But this on isn't our's.
 
Somebody on here a year or two ago, put a 4020 engine in a 3020. Lengthened the hydraulic lines and hood and it looked pretty good when doe.
 
Company called lock n stitch makes pins to repair cracks in cast. several years ago the diesel tech where I work helped me repair a block on a 285 massey that had cracked between the cylinders. the company has a good website and they are very helpful on what u kind of pin u need to repair the crack
 
(quoted from post at 21:25:13 04/02/17) Sorry guys fogot to put in some information the block is cracked between 2&3 cylinders in the liner counter bore. Tried to post picture but did not go through.

Bronzing the cracks closed should be enough. Are the ends of the cracks accessible to drill them to eliminate the stress riser ?
 

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