break in procedure

Discussion in 'Street/strip 400/430/455' started by GS400 68, Sep 26, 2004.

  1. GS400 68

    GS400 68 Active Member

    We have rebuilt our 1968 GS400's 400 BBB, and have a question. To circulate oil throughout the engine prior to initial start-up, can you use a drill? or is there another way to get oil throughout the system?
     
  2. SkylarkSteve

    SkylarkSteve Hello Michael

    Yes you can use a drill, what some people have done is get and old flat blade screwdriver, break off the handle and slip that end into the drill. There are also some for sale from TA performance that not only have the blade part but a circle to go around the shaft that helps prevent slipping.
     
  3. PaulGS

    PaulGS Well-Known Member

    The best way is to have the valve covers off.

    The drill motor needs to be fairly beefy.

    Spin the oil pump and watch the pushrods for oil.

    Turn the crank 90 degrees and spin the pump more.

    Do this until ALL the pushrods have oil coming out.

    The engine is fully primed.

    BTW - Put a bottle of GM EOS in with 15w-40 diesel oil for break in.
     
  4. FJM568

    FJM568 Well-Known Member

    Why 15w-40 diesel oil for break-in??? Better additives or something???
     
  5. sailbrd

    sailbrd Well-Known Member

    I use and old distributor. Just strip it down to the housing and shaft. Also run the drill motor in reverse.
     
  6. white72gs455

    white72gs455 Going Fast With Class!!!

    coolant conditioner

    Also I heard you should put a tablet in the coolant that is a conditioner,all I can find is a liquid called RMI 25,Where and what is the tablet, are they the same, what is water wetter, is it the same...
    I could and will take any help!!! :Do No:
    Thanks :beer
     
  7. ilikebmx999

    ilikebmx999 Well-Known Member

    ive always been told to use sae30 weight for breakin and for the first 100 miles than switch over to whatever oil you prefer.
     

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