1. Registration trouble? Please use the "Contact Us" link at the bottom right corner of the page and your issue will be resolved.
    Dismiss Notice

Startup Procedure For Newly Rebuilt 225?

Discussion in 'Early CJ-5 and CJ-6 Tech' started by Chuckman, Oct 12, 2019 at 6:03 PM.

  1. Oct 12, 2019 at 6:03 PM
    Chuckman

    Chuckman New Member

    Joined:
    Jan 4, 2011
    Messages:
    27
    is there a definitive procedure for the startup of a 225 after a fresh rebuild? bought this motor in a basket, and theres ZERO to start from. carb rebuilt, motor rebuilt, converted to HEI etc. so theres many variables to consider.

    break in oil etc.
     
  2. Oct 12, 2019 at 6:45 PM
    cj6/442

    cj6/442 Sponsor Sponsor

    Fallbrook, Calif
    Joined:
    Feb 6, 2008
    Messages:
    2,698
    I just broke in a freshly rebuilt 225 , I spun the oil pump first to build pressure and get oil to the top end , then installed the distributor. I filled it with delo 400 15w30.and used a zinc additive also .started it up I was close with the timing and once started I turn hei to get it to run clean and spun the motor a 2000rpm for 15 min , keep an eye on temp, pressure and water leaks .
     
  3. Oct 12, 2019 at 11:54 PM
    wheelie

    wheelie beeg dummy Sponsor 2019 Sponsor

    York, PA
    Joined:
    Mar 6, 2004
    Messages:
    3,535
    I was always told to run straight water in the cooling system during initial start up of a fresh engine. Something about, if there is a coolant leak into the oiling system (like a head gasket problem?), the straight water is less likely than anti freeze, to lead to damage of the bearings. Might be hocus-pocus. Just what I was told. Maybe a pro can confirm or deny this info.
     
  4. Oct 13, 2019 at 8:20 AM
    Twin2

    Twin2 wasn't me Sponsor 2019 Sponsor

    Virginia Beach, VA
    Joined:
    Apr 28, 2011
    Messages:
    3,815
    225 pack oil pump with petroleum jelly (vaseline)
     
  5. Oct 14, 2019 at 12:58 AM
    53A1

    53A1 Member

    Kern Co. Ca.
    Joined:
    Jun 17, 2008
    Messages:
    287
    ^^
    Good advise. Assuming you put in a new cam and lifters, Melling cams actually recommends Delo and I would take the above advice and add an additional bottle of Lucas with ZDDP. Drive it around for 20 min after cam break-in to break in the rings under load then dump the oil. I would stick with the Delo for the life of the vehicle but don't want to start another oil debate.
     
    Last edited: Oct 14, 2019 at 1:08 AM

Share This Page

New Posts