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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

Engine Assembly Lube or 30 wt

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Jon (IN)

07-24-2006 14:55:29




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What do you guys use to reassemble an engine? Do you use an assembly lube or just coat everything good with oil? Does this vary between a gas and a diesel engine? This is a Case 188 Diesel engine. Crank, cam, and lifters are new.

Thanks,
Jon




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the tractor vet

07-27-2006 17:13:21




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 Re: Engine Assembly Lube or 30 wt in reply to Jon (IN), 07-24-2006 14:55:29  
everybody has there owen ideas as to what works as for me i use lubraplate on bearings and cams and a light oiling of the cylinders and rings with what ever is in the oil can at the given moment that i grab it it could be 10-30-10-40 -15-40 prime the oil pump like others have said and ya can prime the system as for me i run it over on the starter with no fuel or the key off for 15-30 seconds and light them off . If you did your job correctly it will run fine . Been builden engine since 1962 from a 1 cylinder up to V12's from mild to wild . The big thing in my book is keeping things clean . Checking everything before ya start the final assambly i have seen way tomany mistakes from socalled good machine shops.

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old

07-25-2006 11:07:23




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 Re: Engine Assembly Lube or 30 wt in reply to Jon (IN), 07-24-2006 14:55:29  
My self I always use STP oil treatment as a lube for what your doing. Also never touch any of the parts with out putting STP/oil on your hand first or the acids in your skin will leave finger prints on bearings etc. Guess how I found out about the finger prints. I took an engine aprt once that some one else had rebuilt and his prints where all over the bearings etc. I could have had an FBI check done on the guy as good as most of the prints where

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george md

07-25-2006 10:50:34




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 Re: Engine Assembly Lube or 30 wt in reply to Jon (IN), 07-24-2006 14:55:29  
Jon, # 90 is a very good lube ( just stinks abit ),
lube manufacturer says if you don't have assembly lube the next best thing is # 90 gear oil as it
contains the extreme pressure additives . Being a clevite warehouse distributor I buy the assembly lube by the case and use it for many other things as well , it's a great lube .

george



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Nebraska Kirk

07-24-2006 20:22:48




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 Re: Engine Assembly Lube or 30 wt in reply to Jon (IN), 07-24-2006 14:55:29  
A diesel mechanic that I know uses plain "ol 80/90w gear oil.



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NC Wayne

07-24-2006 19:20:22




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 Re: Engine Assembly Lube or 30 wt in reply to Jon (IN), 07-24-2006 14:55:29  
Beem building engines for years and have always used a mix of STP and regular engine oil. I thin the STP with the regular oil just enough to so it's easy to brush on and you can pull the brush back without it stringing up too bad. I've used th mix on everything from big AC engines to the smaller Yanmars and have never had a problem.



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Shovelman

07-24-2006 17:18:13




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 Re: Engine Assembly Lube or 30 wt in reply to Jon (IN), 07-24-2006 14:55:29  
Jon,

Definitely use assembly lube on the new cam and followers. Personally, I use SAE 30 or 15W-40 (depending if gas or diesel) on everything else, providing I am going to start it up right away and not store it before the initial startup.

As ElToro stated, pressure priming the system just before startup works very well. I use a new, unused Chapin style garden sprayer for the job. Tractor Supply has the 1 gal sprayers, usually for less than $10. Just be sure it is perfectly clean. Use this to pump 2-3 quarts into an oil gallery port, then remove the setup, crank it over until you see oil pressure on the gauge and then light it off. Idle just long enough to get oil pressure, then throttle up to 3/8 - 1/2 to insure the cam and followers are getting splashed. Then run it in as usual.

Good luck,
Scott

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motorhead460

07-24-2006 15:08:41




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 Re: Engine Assembly Lube or 30 wt in reply to Jon (IN), 07-24-2006 14:55:29  
Hi, I have used STP oil treatment as an assembly lube for years on gas and diesel engines,it stays on the parts better than 30wt and costs a lot less than assembly lube.Coat everything down good.Also whats left over from the bottle(if any) I pour in the engine oil.Never had a problem.



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El Toro

07-24-2006 16:38:21




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 Re: Engine Assembly Lube or 30 wt in reply to motorhead460, 07-24-2006 15:08:41  
You can use either one. We used lubri-plate and oil. We always pressurized the oil gallery until we had oil pressure showing on the gauge prior to startup. Be sure to prime that oil pump prior to installation. Hal



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Almost an old fart

07-26-2006 21:54:12




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 Re: Engine Assembly Lube or 30 wt in reply to El Toro, 07-24-2006 16:38:21  
I always used 30wt. non-detergent for engine assembly and break-in on old engines that I have rebuilt. New engines are broken in at the factory, so no need for the old "break-in" period. Been told by older farts than me that new multi-weight oils will prevent proper scuffing of cylinder walls and seating of rings. I run the non-detergent for 50 hrs., then change oil and filter to the oil if my choice(Rotella 15w-40). Don't know if there is any truth to this, but it has always worked for me.

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