JD 400/ corrosion at cylinder liner to block seal


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JD 400/ corrosion at cylinder liner to block seal

Chris I'm rebuilding a JD 400 with a 202D engine. I just got the liners out and after cleaning up the lower sealing surface on the block I've found a fair bit of pitting. I don't see oversized liners on the JD parts catalog so I take it that is not an option. Has anyone else gotten to this point and what was your solution?

Thanks

ross Was the pitting on the block or on the liner itself. If its on the liner it's not that uncommon to see pitting if your antifreeze isn't that good. If the pitting is where the orings seal, then your going to have to put in new piston/sleeve kits.
Chris The pitting is on the block where the o-rings sit. I have not found any liner kits for an oversized bore. This leads me to conclude that the seats in the block need to repaired not resized.

In another forum I've read that some people have used JB weld or similar epoxy and then rehoned the seats by hand. I also came across references to using silicone in addition to the seals. I doubt I can afford to have the block repaired by a shop so I am looking for feedback on the latter two repair ideas.




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