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Rebuilding Motor
:

Too much lube ?

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Brian

01-04-2003 09:14:07




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When reassembling a motor, I know you are suppose to use a oil to lube all moving parts. My part supply guy gave me a bottle of the stuff he uses, it's a real thick lube. My question is, should I be putting large amounts on all the bearing surfaces such as:
Crank
Connecting rods
Piston pin bushing
Inside Cylinders ?
Tappets
Cam bearing surfaces, lobes
timing gears ?

I figured more is better, but on the other hand, this is thick stuff, and don't want this stuff to keep the regular oil from getting to the bearings.

Thanks all !
Brian

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Shovelman

01-06-2003 18:31:54




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 Re: Rebuilding Motor - Too much lube ? in reply to Brian, 01-04-2003 09:14:07  
Brian,

I have always had good luck with using the heavier assembly lubes on the cam & followers, rocker arms, etc., especially if the engine is not going to be started right after rebuild. Otherwise, I use a good grade of motor oil for assembly and then pressure-prime the system using a "pig", just before initial start-up. A Chapin style garden sprayer can be easily modifed and connected to a gauge or other pressurized oil port in the block. I usually feed 2 to 3 quarts of oil into the system this way before starting. Just be sure that everything is perfectly clean - sprayer, hose, fittings, oil, etc. before you start. I bought a new sprayer for less than $20. just for this purpose. Insures a good start and considering what rebuilds cost today, it is cheap insurance. Good Luck! Scott

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Mike ISW

01-05-2003 06:04:32




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 Re: Rebuilding Motor - Too much lube ? in reply to Brian, 01-04-2003 09:14:07  
Too much is not a concern here. Too little IS! I and others use a NAPA assembly lube. Its a white grease. All friction surfaces(among others) you mention should have a liberal amount of assembly lube. Good Luck, Mike



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TimC

01-04-2003 21:26:35




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 Re: Rebuilding Motor - Too much lube ? in reply to Brian, 01-04-2003 09:14:07  
There is a very good quality assembly lube that is blue but i can't remember the name.

I have seen a professional builder use large amounts when assembling a motor. He has done a lot of work for people who have held NHRA titles so i wouldn't worry about using to much.



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Ben in KY

01-04-2003 20:45:31




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 Re: Rebuilding Motor - Too much lube ? in reply to Brian, 01-04-2003 09:14:07  
Just be sure to use assembly lube and you should not have any problems. You can get into trouble when using some types of grease that will not flush away properly with engine oil.



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Dave_Id

01-04-2003 09:53:06




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 Re: Rebuilding Motor - Too much lube ? in reply to Brian, 01-04-2003 09:14:07  
I don't think you need to worry, if you are concerned, then take care not to plug the small holes, but 60 pounds of oil pressure will wash any assembly lube out of the little holes real quick... The purpose of the assembly lube is to ensure you have lubrication at start up until oil pressure builds up and everything in the engine has proper lube.. I use Napa brand, and it seems to me if you get too much on, it'll just run off anyway

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