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| I hope it frees up easily with one of the previous suggestions. My brother and I used to restore older tractors a few years back and one thing we did when encountering a stuck engine was to put the penetrant in the bottom side of the piston. Obviously you don't want to take things all the way appart like we did but we would turn the block upside down and fill the pistons up with whatever. That gives the oil more places to penetrate, such as the wrist pin holes, oil ring groove as well as the skirt. It worked well. | |
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