4430 pistons

Don't try to over bore the old sleeves. They are likey rotted half way through with pin holes.
Sleeve and piston kit is reasonable in price.
 
Like buickanddeere said, New piston sleeve assemblies are in order. John Deere sells assemblies that you push the piston out just far enough to install the rod and install the piston, sleeve, and rod into the block at the same time. Reasonable price, probably $2000,00 for the out of frame kit extended from deere. Includes 6 piston liner kits, seals, gaskets, bearings, rod and cam bushings. Extra parts you would need are head bolts $300, and rod bolts $60.00
 

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