Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

What to look for when buying a 14bff?

Discussion in 'The Garage' started by sebban, Nov 8, 2005.

  1. sebban

    sebban Registered Member

    Joined:
    Jan 18, 2005
    Posts:
    63
    Likes Received:
    0
    Location:
    sweden
    I´m looking to buy a 14bff. and I think that it has a limited slip inside.
    Does it matter what´s inside if I want to have a Detroit locker inside??
     
  2. shane74

    shane74 1/2 ton status

    Joined:
    Feb 12, 2002
    Posts:
    4,100
    Likes Received:
    0
    Location:
    Vancouver, WA
    Yes, you will need an open carrier if you plan on installing a detroit into a 14BFF axle.
     
  3. sandawgk5

    sandawgk5 3/4 ton status

    Joined:
    Oct 28, 2003
    Posts:
    6,881
    Likes Received:
    1
    Location:
    Kitsap County PACNORWEST
    Anything you ever wanted to know about 14FF carriers is right here.

    Ira
     
  4. sebban

    sebban Registered Member

    Joined:
    Jan 18, 2005
    Posts:
    63
    Likes Received:
    0
    Location:
    sweden
    Sorry, I´m not a registered member so I couldn´t read it. :blush:

    When you install a detriot you replace the internals of the diff, are you guys sure that it wont fit? (C´mon I really want this to work..) ;)
    I´ve tried to find information about this on the detroit website but nothing..

    Thanks,
    Sebastian
     
  5. sweetk30

    sweetk30 professional hooker Premium Member

    Joined:
    Nov 1, 2004
    Posts:
    25,540
    Likes Received:
    539
    Location:
    horseheads , ny 14845
    the spider section in a open and detroit is 4 pin cross. the factory gov lock / limited slip is 3 pin cross. wont fit. my thread linked on hear before has great pics of all the stuff you need to know about the carriers.
     
  6. sandawgk5

    sandawgk5 3/4 ton status

    Joined:
    Oct 28, 2003
    Posts:
    6,881
    Likes Received:
    1
    Location:
    Kitsap County PACNORWEST
    [​IMG]
    Here is a pic of a detroit for a 14FF you can see the 4 pins SweetK30 is talking about. It is really simple to install. Open the carrier remove all gears and shims, install detroit, bolt up carrier.

    Ira
     
  7. shane74

    shane74 1/2 ton status

    Joined:
    Feb 12, 2002
    Posts:
    4,100
    Likes Received:
    0
    Location:
    Vancouver, WA
    That is true to an extent. You replace the internals of the carrier. The detroit locker has the 4 pin cross of the open style 14BFF carrier. Since the gov-loc 14BFF's use a 3 pin "Y", the detroit will not work in the gov-loc unit. Search around, I'll bet you can find a used open carrier pretty cheap.
     
  8. sebban

    sebban Registered Member

    Joined:
    Jan 18, 2005
    Posts:
    63
    Likes Received:
    0
    Location:
    sweden
    What about shimming the gears?
    This guy also has a 14bff with an open carrier but it has 3,71 gears and not the 4,10 gearing that I need. I cant just swap the two carriers without shimming the gears can I? If not, is it possible to weld the LS version?
    I do 50% wheeling on the streets, will I break it when running on asphalt?

    Thanks,
    Seb.
     
  9. sandawgk5

    sandawgk5 3/4 ton status

    Joined:
    Oct 28, 2003
    Posts:
    6,881
    Likes Received:
    1
    Location:
    Kitsap County PACNORWEST
    The 14FF does not use shims. The carrier is located by threaded inserts that press against the bearings. They are also used to set the bearing pre-load on the carrier bearings. The pinion bearing pre-load is set by using a Crushsleave between the 2 pinion bearings in the pinion retainer. You can take any carrier from any 14FF and move it to another one all you have to do is adjust the threaded collars to set your carrier pre-load and backlash. The only shims in a 14FF are for setting pinion depth but they are simple to install since the pinion is housed in its own carrier that easily unbolts from the center section. The shims go between the center section and the pinoin carrier. If I have thouroughly confused you let me know and I will try to find some pics.


    Ira
     
  10. sandawgk5

    sandawgk5 3/4 ton status

    Joined:
    Oct 28, 2003
    Posts:
    6,881
    Likes Received:
    1
    Location:
    Kitsap County PACNORWEST
    Here is just about everything you ever wanted to know about the 14FF. At the top of the page there is the military 14FF service manual.

    Billavista's 14 bolt bible

    Ira
     
  11. sebban

    sebban Registered Member

    Joined:
    Jan 18, 2005
    Posts:
    63
    Likes Received:
    0
    Location:
    sweden
    thanks guys!

    I´ll buy the open carrier with 3.73 (or 3.71 or whatever it is.. :doah: ) ;) Then I´ll install the 4.10 gears that I want plus the detroit.

    :D :D
     
  12. sandawgk5

    sandawgk5 3/4 ton status

    Joined:
    Oct 28, 2003
    Posts:
    6,881
    Likes Received:
    1
    Location:
    Kitsap County PACNORWEST
    That is what I am in the process of doing right now. :D

    Ira
     
  13. shane74

    shane74 1/2 ton status

    Joined:
    Feb 12, 2002
    Posts:
    4,100
    Likes Received:
    0
    Location:
    Vancouver, WA
    Good luck setting up the used gears. Sometimes it goes easy, sometimes you'll give up infrustration. Ask me how I know :( :doah: I'll never set up another set of used gears..EVER! :haha:
     
  14. sebban

    sebban Registered Member

    Joined:
    Jan 18, 2005
    Posts:
    63
    Likes Received:
    0
    Location:
    sweden
    Well I´m gettin a new set so hopefully it will be a bit easier.. :wink1: :wink1:
     

Share This Page