assembly lube vs. wd40 on cyl.walls

Discussion in 'The Bench' started by GSDan, Aug 17, 2007.

  1. 70aqua_custom

    70aqua_custom Well-Known Member

    It amazes me just how many different ways there are to do the same job. :Dou: :laugh: I've heard stories of people using many different lubricants while assembling an engine with, "no problems." Examples include, lubriplate, engine oil, moly grease, vaseline, ATF, WD-40, EOS, and STP.

    I do NOT claim to be any sort of engine building expert. I try my best to do things right to the best of my knowledge. I learned so much from this site. With my current 455 build I dipped the pistons, enough to cover the wrist pin, in engine oil and installed them into the cylinders. I turned the engine by hand many times in the 2 months before I actually started it. I noticed the cylinder walls were very dry just from the rings doing their job as I turned the engine so I used WD-40 to keep them from rusting and to lubricate. Dry assembly bothers me. I'd guess any excess oil drained away long before I started the engine for break in. I wonder how much it matters what you use. Upon start-up, I'm pretty sure, there is oil is spraying all over the cylinder walls below the piston washing away whatever was put there and above the piston there's air/fuel mixture followed by an explosion and flames.

    I just want my Buick to stay running strong for many years to come. :pray:

    Here's the instructions from my rings...
     

    Attached Files:

    Last edited: Aug 19, 2007
  2. doc

    doc Well-Known Member

    I will go with the reccomendation Buick says. lube with engine oil. That is what will keep the engine and the rings alive any way.
     
  3. PaulGS

    PaulGS Well-Known Member

    The engine factories for GM back in the day used motor oil wiped in the bores.
     
  4. D-Con

    D-Con Kills Rats and Mice

    As long as you are using the bore& hone procedure, as well as the ring material used when your Buick manual was written, that will work fine.
     
  5. rmstg2

    rmstg2 Gold Level Contributor

    I have a 2 gal can of 30 wt non detergent that I have had for years to wipe down the cylinder walls during assembly. No failures yet. I got the can of oil from my Dad about 30 years ago he was through building engines:beers2:
    Bob H.
     
  6. buicksstage1

    buicksstage1 Well-Known Member

    Hi Dave, Reher-Morrison has used WD40 for many years a light dusting of it. I hand rub ATF into the cylinder walls then put a very light coat ATF on rings and a very light coat of 30W on the skirt. Reher-Morrison also mentioned that if the engine is going to sit around for awhile before start up not to use WD40 because it dry's up. Chris
     
  7. buicksstage1

    buicksstage1 Well-Known Member

    I phoned and asked the boy's at Reher-Morrison today what they use just for kicks. They aren't using WD40 anymore, instead they have gone to light coat of 30w on the cylinder walls and a penetrating spray from Valvoline on the rings. Different strokes for different folks but to me assembly lube would be a big no no. I like my method that I've been using for a very long time, 0-2% leak #'s. Chris
     

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