Posted by Andy C on December 18, 2010 at 06:13:06 from (74.103.170.109):
I am repairing a 560 Farmall for a neighbor and have encountered a few things that I know others have seen. I could use some advise here. The engine has dry sleeves which I removed. I cleaned up the bores and some of them had scratches from either removal or installations prior to this time. there is 1 cylinder where the scratch seems like it might be a crack. The machine shop lent me a hand held magnaflux and some powder. the closest we could get the magnet was on the outside of the block. the inside was magnetized and no indication of cracks was found with that method. I did the dye test and still no positive indications.(the tractor is being treated for a blown head gasket from overheating due to dust clogged radiator....after removal of the head, liners looked pretty bad so it was decided to replace liners/pistons)I am considering making 2 plugs to pressure test the cylinder bore just to make sure.My questions are: 1. are there any other methods to check this? 2. if it IS a crack, is there a methodology to seal when the liner is installed? 3. Installing the liners....Is never-seize an acceptable product to use on the bore and sleeve? also will freezing the liners before install make it easier. I know there is a lot of expertise here, thanks in advance for taking the time to help me out! Andy
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