Hone or not...
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A fast couple of swipes with a ball hone just to break the glaze on the cyl. walls don't take any metal off just raise the hash marks up and a new set of rings would be in order . Can't hurt it and rings do loose their tension and get weak . Cast only don't go the chrome moly rings unless you do a bore & new pistons .
The chrome rings in old cylinders tend to smoke because they take forever to seat .
The chrome rings in old cylinders tend to smoke because they take forever to seat .
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FLHS1990 (10-28-2023)
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Way to tell is look at the 2 one piece compression rings if the are a dull flat color on the edges they are cast , one is shiny those are the chrome moly .
The cylinders wears a in an oval shape so cast is the best for just a light glaze break hone & rings only , they will seat in better & faster . The moly rings tend to be harder so they are best with a fresh bore & piston set .
When you reassemble things leave the cylinder dry and use a bit of 30wt oil in the ring grooves and on the pistons skirts . Don't over do the lube and everything will settle in & seat much faster for you .
Good luck and keep use posted , I do a lot of old shovelheads they are my thing so if you have any questions or need a tip on something PM me be glad to help , I can point you at the best prices for parts too
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FLHS1990 (10-28-2023)
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No that will wash the oil away and could damage the piston skirts , WD-40 is just a light kerosene with additives .
Just follow the tips I gave in last post for re-assembly ,wipe a light coat of oil in the ring grooves ans the skirts on the pistons . I don't oil the cylinders because any way you try to aplly it you'll have dirty hands or lint off a rag leaving things you don't want in there when you start it plus the rings seat faster that way . Plenty of oil gets tossed around for lube .
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