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How to install a cylinder sleeve in an original RC 450

A

Anonymous-0

Well-known Member
I installed a new sleeve in my 450 several years ago by just cleaning the top grove, applying a bead of recommended Lock Tight and pounding it in with a block of wood until it seated . Should I have left it stick above the top of the block as I am now getting antifreeze dripping down between the inside of the cylinder and the piston . I have retorqued the head as directed and even replaced the head gasket twice . Any advice wood be greatly appreciated
 
It's possible it went down too far. Of course, check the head and the gasket, but check the liner protrusion before you put the head back on. I don't know what an 'RC' is, but generally you should have zero protrusion with a wet sleeve ( only the step in the liner should be above the block) or .005" protrusion with a dry sleeve. In no circumstance that I'm aware of, should the liner sit below the surface of the block. If too low, the only way to fix it is remove the liner and put shims under it, at the counterbore.
 
The dry sleeve should not be below the deck, .003 to .005 will be fine. If it were mine, I would pull the pan and look to see where the coolant is leaking from. Put 7 psi (no more) in the radiator, and use a good light to find the source. If it leaks between the cylinder sleeve, and the block casting. it likely has a crack in the cast bore. (not a disaster if repaired)
Usual best practice is to bore out the block for a pretty thick repair sleeve, then bore that for the correct dry sleeve (and the top groove for the dry sleeve rim can be machined to exact protrusion) Jim
 
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