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Breakin Procedure

Discussion in 'XJ Technical Chat' started by sybe, Jun 2, 2016.

  1. sybe

    sybe Active Member

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    Since my motor is back together with new piston rings. I have been reading about the proper breakin method to seat them and i have come across two different schools of thought. One method is riding it hard and fast to seat the rings and the other is slow and steady. Is there a reason i should do one and not the other?or any tips?

    This is my first attempt at this so i want to get it right.
     
    sybe, Jun 2, 2016
    #1
  2. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    Slow and steady has the advantage of wearing any rough bits down without much risk of breaking rings.
    The fast way has the advantage of being fast.
    I like to split the difference. 200 miles of slow and easy; varying the throttle regularly (riding on residential streets takes care of that), followed by a good romp on the highway (again varying throttle position often).
     
    k-moe, Jun 2, 2016
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    sybe likes this.
  3. sybe

    sybe Active Member

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    Thanks mate, do you flush out the oil after 50 miles? I used a butt load of assembly lube and i am concerned it might not mix well or cause globing issues.
     
    sybe, Jun 3, 2016
    #3
  4. hogfiddles

    hogfiddles XJ-Wizard, Host-Central NY Carb Clinic Moderator Premium Member

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    Open the drain plug...
    Let it run out.....
    Remove filter cap....
    Install a new filter.....
    Replace.......
     
    hogfiddles, Jun 3, 2016
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  5. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    Assembly lube mixes with the oil. It won't form globs.
    Just do an oil change after the break-in (500 miles or so).
     
    k-moe, Jun 3, 2016
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  6. Mustang

    Mustang Member

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    Should a break-in oil be used or is normal rotela fine
     
    Mustang, Jun 11, 2016
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  7. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    A break in oil is best if you have some, but a store-brand oil will do. Don't waste money on oil that you'll be changing soon.
     
    k-moe, Jun 11, 2016
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