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Flywheel Questions

Discussion in 'Early CJ5 and CJ6 Tech' started by Farmer Mike, Oct 10, 2011.

  1. Oct 10, 2011
    Farmer Mike

    Farmer Mike Member

    Butte City, Ca
    Joined:
    Sep 21, 2011
    Messages:
    121
    I have a 67 CJ5 that I pulled the 225 and gonna replace it with an 84 3.8 motor. The flywheel on the left is the one off the 225. The one on the right is one of 3 that came with the 231. I know there are balance issues but I'm wondering what the difference is between these 2. Do you think the one on the right could be balanced for a 231?

    [​IMG]
     
    Farmer Mike, Oct 10, 2011
    #1
  2. Oct 11, 2011
    Farmer Mike

    Farmer Mike Member

    Butte City, Ca
    Joined:
    Sep 21, 2011
    Messages:
    121
    After searching countless threads I want to give up. This is gonna be a pain in the a**! So much for the turbo motor.
     
    Farmer Mike, Oct 11, 2011
    #2
  3. Oct 11, 2011
    findleyk

    findleyk New Member

    Joined:
    Jun 8, 2010
    Messages:
    21
    Mike

    Don't give up. You just need to determine what balance the 231 needs and then take a sample to any competent machine shop. I good shop will know what you need and tell you. We did this a lot with the heavy 225 flywheels when switching to 231s.
     
    findleyk, Oct 11, 2011
    #3
  4. Oct 11, 2011
    SFaulken

    SFaulken Active Member

    Bellevue, WA
    Joined:
    May 24, 2011
    Messages:
    1,178
    Well, you're comparing an odd-fire flywheel, to an even-fire, so it's apples to oranges. One of my guys can balance it out, but I don't know if I can get you into it for less that a couple hundred....
     
    SFaulken, Oct 11, 2011
    #4
  5. Oct 11, 2011
    Farmer Mike

    Farmer Mike Member

    Butte City, Ca
    Joined:
    Sep 21, 2011
    Messages:
    121
    So you're saying the one on the right is for an even fire meaning it will work on the 84 3.8?
     
    Farmer Mike, Oct 11, 2011
    #5
  6. Oct 11, 2011
    findleyk

    findleyk New Member

    Joined:
    Jun 8, 2010
    Messages:
    21
    Mike

    Call a few auto machine shops (FLAPS) and see if any of them can re-balance a flywheel. When you find one that can, take your flywheels to them and ask them which one has the correct balance for you year engine.
     
    Last edited: Oct 11, 2011
    findleyk, Oct 11, 2011
    #6
  7. Oct 11, 2011
    Warloch

    Warloch Did you say Flattie??? Staff Member

    Falcon, CO
    Joined:
    Mar 4, 2003
    Messages:
    5,469
    Unless you have the motor apart to balance the whole assembly, I have found that a simple neutral balance on a flywheel (I have ones from 225s in 231s) works fine.
     
    Warloch, Oct 11, 2011
    #7
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