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Locked or Not

Discussion in 'Early CJ5 and CJ6 Tech' started by smcdowe, Dec 22, 2009.

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  1. smcdowe

    smcdowe New Member

    smcdowe, Dec 22, 2009
    #1
  2. Patrick

    Patrick Super Moderator Staff Member

    Nobody makes a "locker" for the D27. They did make a Powr Lok, which is a limited slip differential, but to my knowledge it was never available from the factory in a CJ.
     
    Patrick, Dec 22, 2009
    #2
  3. Patrick

    Patrick Super Moderator Staff Member

    That picture you linked is a Powr Lok.
     
    Patrick, Dec 22, 2009
    #3
  4. jzeber

    jzeber Well-Known Member 2022 Sponsor

    Powr Lok is a pretty decent unit. I have one in the front of mine. You can take it apart and make sure the discs are good. Randy's R&P sells replacement parts.
     
    jzeber, Dec 22, 2009
    #4
  5. smcdowe

    smcdowe New Member

    Ok Thanks. So basically the front end is not open but equipped with a limited slip. Whats the difference between locked and limited slip?
     
    smcdowe, Dec 22, 2009
    #5
  6. w3srl

    w3srl All-around swell dude Staff Member

    X2 on the Powr Lok, but I'd be a bit concerned about how that case got hot enough to produce those heat marks around the cross-shaft.
     
    w3srl, Dec 22, 2009
    #6
  7. Patrick

    Patrick Super Moderator Staff Member

    Left from the manufacturing process..
     
    Patrick, Dec 22, 2009
    #7
  8. smcdowe

    smcdowe New Member

    Its clearly from the factory. the unit looks good inside. i cant go wrong considering i paid only 250 for the front end with disc brakes and now a power lok. im pretty pleased. thanks for the help. you all are a wealth of knowledge.
    Thanks
     
    smcdowe, Dec 22, 2009
    #8
  9. EricM

    EricM Active Member

    EricM, Dec 22, 2009
    #9
  10. smcdowe

    smcdowe New Member

    While were on the topic, what would be a good cleaner to clean the inside before i replace the gasket and fluid?
    Thanks
     
    smcdowe, Dec 22, 2009
    #10
  11. Warloch

    Warloch Did you say Flattie??? Staff Member

    Locked is locking the axles on both sides of the Diff together and they turn at the same rate. Limited slip has a ratched mechinism inside that will allow the axles to ratchet in a turn.
     
    Warloch, Dec 22, 2009
    #11
  12. smcdowe

    smcdowe New Member

    Thanks for the help. kinda new to this stuff.
     
    smcdowe, Dec 22, 2009
    #12
  13. jzeber

    jzeber Well-Known Member 2022 Sponsor

    I always wipe out the diff as much as possible with a rag and then use brake cleaner. When I picked up my Powr Lok I took it to a mechanic friend who took it apart and cleaned in a solvent tank. I was told to put it back together the same way it came apart....keep the discs in order.
     
    jzeber, Dec 22, 2009
    #13
  14. jpflat2a

    jpflat2a what's that noise?

    nice purchase and a very good deal.
    what gear ratio, 4:88 ?
     
    jpflat2a, Dec 22, 2009
    #14
  15. jzeber

    jzeber Well-Known Member 2022 Sponsor

     
    jzeber, Dec 22, 2009
    #15
  16. smcdowe

    smcdowe New Member

    yes 4:88s
     
    smcdowe, Dec 22, 2009
    #16
  17. Mcruff

    Mcruff Earlycj5 Machinist

    Those burn marks are from being induction heat treated (hardened) in the area of the cross shaft. Nothing to worry about!
     
    Mcruff, Dec 22, 2009
    #17
  18. kaiser_willys

    kaiser_willys Well-Known Member

    got me to wondering whats in my D27 now, if it werent so dang cold,and it sitting in a foot of snow i would be out there now to see:rofl: any easy way to tell if it is a open diff or not, without a whole lot of work? or just pull the cover and look. it is not in a jeep, its on stand by, but will be going in my jeep
     
    kaiser_willys, Dec 22, 2009
    #18
  19. nickmil

    nickmil In mothballs.

    Lock the hubs. Turn one wheel. If the other turns the same way then something is in there other than an open diff most likely. Another hint is to pull the fill plug. If you can see the diff case with bolt heads and a machined right angle, then most likely a powerlock. Ssssshhhhh. Don't tell anyone I said that....:)
     
    nickmil, Dec 22, 2009
    #19
  20. kaiser_willys

    kaiser_willys Well-Known Member


    said what?? :rofl: thanks
     
    kaiser_willys, Dec 22, 2009
    #20
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