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Engine assembly 101

Discussion in 'Builds and Fabricators Forum' started by LarryD, Oct 23, 2010.

  1. Oct 23, 2010
    LarryD

    LarryD Member

    Gallup NM/ 4 Corners
    Joined:
    Jul 7, 2006
    Messages:
    637
    When installing the pistons and rings in the block I usually put a couple of squirts of motor oil on the rings and a light coat of assembly grease on the piston skirts. Is that right ? I did a search and some said to assemble with no oil or grease, just on the rod bearings.
     
  2. Oct 23, 2010
    Mike S

    Mike S Sponsor

    Cameron Park Ca.
    Joined:
    Oct 6, 2009
    Messages:
    811
    How I do it.

    Oil the rings and the ring groove well. Never heard of using assembly grease on piston skirts, but ??? I use oil on the skirts.

    Use assembly grease for bearings and use cam lobe stuff on the cam.

    Be sure everything is clean!!

    Getting the oil pressure up PRIOR to starting is a really good thing----how to do it is dependent on the engine, at the least, pull the spark plugs and spin with the starter till oil pressure comes up.

    Good luck,
     
  3. Oct 23, 2010
    Mcruff

    Mcruff Earlycj5 Machinist

    Albertville, AL
    Joined:
    Sep 22, 2002
    Messages:
    5,349
    I use assembly lube on everything but the cam. I use the crap out of it. Once started and run for about 30 minutes drain the oil and change the filter to get all the asembly lube out of it. That crap will plug a filter up fairly fast. Assembly lube is nothing more than good oil with lots of moly in it and a few other things.
     
  4. Oct 23, 2010
    LarryD

    LarryD Member

    Gallup NM/ 4 Corners
    Joined:
    Jul 7, 2006
    Messages:
    637
    I have always used Lubriplate 105, cause, That's what I have always used. I use it on all moving parts and I do spin the oil pump untill I have oil pressure.
     
  5. Oct 23, 2010
    theotherjmmy

    theotherjmmy Member

    Austin, Texas
    Joined:
    Mar 7, 2009
    Messages:
    156
    I have a book that recommends starting a freshly rebuilt motor and setting the carb to run at about 2000 rpm for 20 minutes. They then recommend doing some on the road stuff that I can't remember. The book seems well written so I trust the info is valid, just not what I'd ever think was the right way.
     
  6. Oct 23, 2010
    Mike S

    Mike S Sponsor

    Cameron Park Ca.
    Joined:
    Oct 6, 2009
    Messages:
    811
    Sounds like breaking the cam in.

    If you do this, be sure to keep an eye on the temperature........
     
  7. Oct 24, 2010
    Patrick

    Patrick Super Moderator Staff Member

    Los Alamos, NM
    Joined:
    Sep 22, 2002
    Messages:
    8,360
    I use Lubriplate 105 as well. It doesn't have moly, and it won't clog an oil filter, or anything else.
     
  8. Oct 24, 2010
    Mcruff

    Mcruff Earlycj5 Machinist

    Albertville, AL
    Joined:
    Sep 22, 2002
    Messages:
    5,349
    Never used it, may have to try it. We use several other Lubriplate products at work just never used this.
     
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