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Engine rebuild; Do u put lube on the back side of bearings?
Topic Started: May 3 2011, 06:57 AM (761 Views)
Bigr2009
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My buddy said something about putting assembly lube on the back side of the bearings. I didn't think I should, but maybe he knows something I don't. The bearings dont move so I don't think I should. Any tips. And I honed the cylinders but the patten dont look like the 60/40. Will this allow the rings to seat properly, if not my buddy has a bottle hone.
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wizard93
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On the main and rod bearings, you don't want lube between the back of the bearing and the bearing seat. They need a good, clean metal-to-metal contact against the block or the rod so you don't risk a chance of the bearing spinning on you and ruining the motor. Also the bearings need to be seated firmly in their seats to provide proper oil clearance. Only lube the bearing surface that meets the journals. I used to put engines together using STP oil treatment on the bearings and soaking the pistons in regular motor oil. I would STP the camshaft lobes and bearing surfaces as well. Never had a problem assembling them in this manner, as long as the engine is to be fired up not long after assembly. A friend of mine used to assemble engines with white lithium grease if he intends to store them for a period of time.

As long as the bores have some kind of cross-hatch pattern to them that is somewhat close to the 45-60° pattern then you should be okay. The cross-hatch does two things: It provides oil control for lubrication of the piston to wall contact, and it helps the rings to break-in on the walls so they can seat properly. Hope this helps.

wizard93
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Bigr2009
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Is cross pattern ok?
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Johnny Mullet
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Fear the Mullet

The honing job you did will be fine. The berry hone is much easier to use.
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Bigr2009
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Posted Image


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Johnny Mullet
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Fear the Mullet

:thumb
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bogs
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Duct tape heals all wounds

:thumb :thumb
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chevmet
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:thumb :thumb :thumb
Bigr that a gold wing tike hiding back there?
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GeoRating
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:thumb :thumb :thumb :thumb
SEEEEXXXXXXAAAAYYYYYYY.

Seriously! This makes me want to go get a second job so I can buy a spare motor to make look this beautiful even if it never goes in the car :O
Edited by GeoRating, May 6 2011, 10:10 PM.
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Bigr2009
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Well yes and no there is a gold wing the back u can't hardly see it and there is a trike but it's a venture ( yhamaha). Lol so does that answer the ??
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chevmet
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sure does
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