Engine Lube on pisont skirts? Rings?

Finnigan

Finnigan

Over 1,000 Posts
Might be a dumb question but during a rebuild is it a good idea to put assembly lube on the piston skirts? Are the rings supposed to be bone dry? Should I put a smear of oil on the rings?
 
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assembly oil is ok . . if you dont have any i use non synthetic engine oil.

use non synthetic oil with zddp in it for break in.
 
The old guys will tell you to put the rings in dry, maybe just a dab of oil on the skirts. That is if you are planning on firing up the engine right as soon as it goes into a frame. Rings will bed in very quickly that way.

I usually plan on having the engine sit together for a little while before I know I will be able to run it and its stupid humid around here most of the time so I really don't want things to rust. Pistons and rings go in with a light coat of oil since I know I will be be futzing with things.
 
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