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Dauntless flywheel

Discussion in 'Early CJ5 and CJ6 Tech' started by Patrick, Apr 29, 2011.

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  1. May 1, 2011
    Dandy

    Dandy Member 2024 Sponsor

    Estherville IA
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    I'll make a note,what flywheel came with what engine........

    Glad you got it fixed.
     
    Dandy, May 1, 2011
    #21
  2. May 1, 2011
    cj6/442

    cj6/442 Sponsor

    Fallbrook, Calif
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    sweet fix Pat for $25 bucks ....... you are correct though ,that would have killed the new bearings after awhile......
     
    cj6/442, May 1, 2011
    #22
  3. May 2, 2011
    Patrick

    Patrick Super Moderator Staff Member

    Los Alamos, NM
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    Still has a bit of a vibration between 2500 and 3000 RPM. Better than it was though. I don't understand how these flywheels are "balanced" , more specifically why some have no balance holes and some have several. They should all be the same. They also don't look balanced enough for an externally balanced engine..
     
    Patrick, May 2, 2011
    #23
  4. May 2, 2011
    w3srl

    w3srl All-around swell dude Staff Member

    Port Orange, FL
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    Since you still have some vibration it might be worth taking one of the flywheels down to the machine shop to have it balanced for the 225. I know, it means pulling the tranny again and of all jobs I hate that one the most. At least that way you will know for sure that it is right.
     
    w3srl, May 2, 2011
    #24
  5. May 2, 2011
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    Medford Mass USA
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    I understood that it's never going to be really smooth ... that's just the way the odd-fires are. Buick used squishy motor mounts to try and soak up some of the vibration. Even though the shake evens out as the RPM increases, that just means that you're no longer able to feel each impulse as a separate event. But the shake is still there, and now that you're looking for them, you may be feeling the normal harmonics that occur with changing RPM.
     
    timgr, May 2, 2011
    #25
  6. May 2, 2011
    Patrick

    Patrick Super Moderator Staff Member

    Los Alamos, NM
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    OK, here's something kind of strange. I mean, I understand, but am a bit surprised.
    I just reduced my "engine" vibration by about 90% by removing my CB radio. Did you know that a CB radio mounted to a 1/16" aluminum plate between the roll cage bars can vibrate the whole damn roll cage, which is bolted to the floor, transfering vibrations throughout the Jeep? Talk about weird vibes...
     
    Patrick, May 2, 2011
    #26
  7. May 2, 2011
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    Medford Mass USA
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    Resonance!

    Try adding some mass to the CB mount.
     
    timgr, May 2, 2011
    #27
  8. May 2, 2011
    Vhunter

    Vhunter Member

    Redding, California
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    Jun 26, 2005
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    When I had my Chevy 153 balanced, they put the clutch and disc on and balanced the flywheel with everything on it, they marked the clutch cover case, so I would know how to mount it up in the same location again. I don't think counting the number of holes has anythng to due with several flywheels and if they where balanced or not. As, each flywheel would balance out differently. Just my $0.02 !!!
     
    Vhunter, May 2, 2011
    #28
  9. May 2, 2011
    lynn

    lynn Time machine / Early CJ5 HR Rep Staff Member

    Huntingdon PA
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    Sep 20, 2002
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    Put the CB mount on isolators.
     
    lynn, May 2, 2011
    #29
  10. May 2, 2011
    MoreJeep

    MoreJeep MoreJeep

    Saint Paul,...
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    Dec 17, 2010
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    Should I be concerned about using a flywheel from a different 225 on my newly rebuilt 225? The rebuilt engine came out of a 1970 Jeepster that had an automatic. So, my intent was to utilize the T86, D18 and flywheel from my old 225.

    After reading this thread it has me wondering if I should have the flywheel balanced with the engine and clutch.


    Thanks



    Mike
     
    MoreJeep, May 2, 2011
    #30
  11. May 2, 2011
    Patrick

    Patrick Super Moderator Staff Member

    Los Alamos, NM
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    I think the biggest problem is the aluminum plate is too thin to support the weight of the radio mounted with two 10X32 machine screws. I think I'll build a backer plate for the mounting bracket. For right now, I'm going to drive it with the CB laying in the back seat.:D
     
    Patrick, May 2, 2011
    #31
  12. May 2, 2011
    Warloch

    Warloch Did you say Flattie??? Staff Member

    Falcon, CO
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    I have only run into this a couple times in all the motor swaps I have done. I would put it on, run it, then see if you have an issue that needs to be addressed.
     
    Warloch, May 2, 2011
    #32
  13. May 2, 2011
    Patrick

    Patrick Super Moderator Staff Member

    Los Alamos, NM
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    Yeah...Never mind. I actually drove the Jeep some, and it's still there. Just quieter without the CB rattling. I'm at a loss at this point. And fed up.
     
    Patrick, May 2, 2011
    #33
  14. May 2, 2011
    Dandy

    Dandy Member 2024 Sponsor

    Estherville IA
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    I never thought to look at the flywheels, till you posted this.......:?
     
    Dandy, May 2, 2011
    #34
  15. May 2, 2011
    uncamonkey

    uncamonkey Member

    Greeley CO
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    When you first asked about this, I went back to the garage to look at my spare motor.
    1 bbl manifold, fan clutch, same rocker arm covers as a 225, OF dist, so it's out of a car.
    No balancing holes drilled in the perimeter of the fly wheel.

    Sounds like somebody needs to talk to a machine shop.
     
    uncamonkey, May 2, 2011
    #35
  16. May 2, 2011
    Patrick

    Patrick Super Moderator Staff Member

    Los Alamos, NM
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    Not sure what I'd do... Motor vibrated before, I put a different crankshaft, still vibrates. Changed flywheel, still vibrates.
     
    Patrick, May 2, 2011
    #36
  17. May 3, 2011
    uncamonkey

    uncamonkey Member

    Greeley CO
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    When I mentioned the machine shop, I was refering to the differences between OF and EF balancing.
    I don't know the difference, many around here have asked me about it.
    If I get a chance tomorrow I'll ask my machinist guru, I'll also try to see what my 2 running V6's have fir balancing drillings.
     
    uncamonkey, May 3, 2011
    #37
  18. May 3, 2011
    Patrick

    Patrick Super Moderator Staff Member

    Los Alamos, NM
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    Thinking back, there's no way this motor vibrated this bad when I put it in 1 1/2 years ago. I'd have noticed it and tried to track it down then. I think it's been getting worse. I actually think it's worse after the crankshaft replacement.
     
    Patrick, May 3, 2011
    #38
  19. May 5, 2011
    Patrick

    Patrick Super Moderator Staff Member

    Los Alamos, NM
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    The only thing I can figure is there's something wrong with the pistons/ bores/ rods.
    So, I ordered as long block...:)
     
    Patrick, May 5, 2011
    #39
  20. May 5, 2011
    jpflat2a

    jpflat2a what's that noise?

    Hermosa, SD
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    sure hope you're right......
    no crossed plug wires ?
     
    jpflat2a, May 5, 2011
    #40
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