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.

Why are Slip yokes so bad?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Bullet, Sep 4, 2002.

  1. Bullet

    Bullet 1/2 ton status

    Joined:
    Mar 14, 2001
    Posts:
    1,222
    Likes Received:
    0
    Location:
    Abilene, Texas
    I have the 241 T Case on my 90 Jimmy and was wondering why slip yokes are so bad. I know that if you pop a rear DS u-joint and that if you pull it you will lose ATF. But other than that what are so bad about them? Just trying to wiegh out the pros and cons about a SYE kit, thanks for any help.
     
  2. m j

    m j 1/2 ton status

    Joined:
    Dec 28, 2001
    Posts:
    4,606
    Likes Received:
    0
    a 205 swap is the best SYE kit on the market
    but
    if it isnt broke dont fix it
     
  3. 84_Chevy_K10

    84_Chevy_K10 Banned

    Joined:
    May 30, 2001
    Posts:
    17,669
    Likes Received:
    0
    Location:
    IL, USA
    Hell yeah! Been there, done that.
     
  4. four_by_ken

    four_by_ken 1/2 ton status

    Joined:
    Jun 9, 2001
    Posts:
    3,806
    Likes Received:
    0
    Location:
    Allenton, MI
    That is the main concern. Loosing all the fluid.

    Ken H.
     
  5. Grim-Reaper

    Grim-Reaper 3/4 ton status Author

    Joined:
    Feb 17, 2000
    Posts:
    7,385
    Likes Received:
    0
    Location:
    Atlanta
    In a stock aplication they are not really bad at all. They save weight and less parts involved. For a lifted 4x4 is where the problems strart making it worth the change.
    With a slip shaft and fixed yoke when the suspension cycles the slip shaft is in direct line and collapses easy.
    On a slip yoke as the drive line angle becomes more severe with a lift then the slip yoke will start binding because your not pushing inline with the way it travels.
    Then there is the issue of busting up a rear shaft and no seal on the case if you have to run without it.
     
  6. Blue85

    Blue85 Troll Premium Member

    Joined:
    Jul 26, 2000
    Posts:
    9,073
    Likes Received:
    486
    Location:
    Grand Rapids area
    They also shorten your driveshaft a little, which makes the angles worse.
     
  7. muddysub

    muddysub 1 ton suburban status Staff Member Moderator GMOTM Winner

    Joined:
    Jun 23, 2001
    Posts:
    10,451
    Likes Received:
    489
    Location:
    my garage, Henderson, NV
    </font><blockquote><font class="small">In reply to:</font><hr />
    a 205 swap is the best SYE kit on the market

    [/ QUOTE ]
    why? i agree the 205 is a strong case but i wouldn't swap my 241 for a 205, i like having a low range.
     
  8. Eric M.

    Eric M. 1/2 ton status

    Joined:
    Dec 10, 2001
    Posts:
    2,118
    Likes Received:
    0
    Location:
    Oakland, CA
    I'm pretty sure all of the 205 have low range. At least mine does. Anyone out there have a 205 with no low?

    Eric M.
     
  9. m j

    m j 1/2 ton status

    Joined:
    Dec 28, 2001
    Posts:
    4,606
    Likes Received:
    0
    for starters you can get a 'never break' 205 for the price of a SYE kit ~$350

    low range isnt that different, you are giving up a ton of reliability for a 3/4 point
    as I origonally posted if it isnt broke dont fix it.
     
  10. Lance

    Lance 1/2 ton status

    Joined:
    Mar 4, 2002
    Posts:
    606
    Likes Received:
    0
    Location:
    Birmingham, Alabama
    Something I haven't seen touched on in this post is the possibility of the driveshaft slip yoke "botttoming out" into the t-case. A friend of mine pushed his slip yoke rear drive shaft right into (and almost throught) the t-case on his J**P and it basically shattered the whole thing. Although I have never seen this on a slip yoke GM, I don't see why it couldn't. Just another possibility. Lance
     
  11. muddysub

    muddysub 1 ton suburban status Staff Member Moderator GMOTM Winner

    Joined:
    Jun 23, 2001
    Posts:
    10,451
    Likes Received:
    489
    Location:
    my garage, Henderson, NV
    it's hardly low, not even 2:1. know it's the strongest out there, but until 3:1s come down in price, i'll keep my 241.

    oh and i've 'never broke' my 241.
     
  12. jimmy88

    jimmy88 1/2 ton status

    Joined:
    Feb 17, 2002
    Posts:
    351
    Likes Received:
    0
    Location:
    Detroit, MI area
    Good answer Grim. 64k question: how much angle is too much? It seems to follow that the further you pull the slip yoke out the more it will tend to slightly cock and the worse the binding will be. Guess a sloppy yoke would be even worse yet.

    Hate seeing that seal reason always brought up though. Running without a shaft is no problem, cheap plastic trans plug or home made plug and some duct tape works fine and is easy to keep in the trail box. Drove around a week like that waiting for the shaft to be made.
     
  13. TorkDSR

    TorkDSR 1/2 ton status

    Joined:
    Sep 1, 2001
    Posts:
    1,258
    Likes Received:
    0
    Location:
    bucks co pa
    </font><blockquote><font class="small">In reply to:</font><hr />
    it's hardly low, not even 2:1

    [/ QUOTE ] id give up 1.96 for 2:1 /forums/images/icons/smile.gif
    and why bother with an sye? just get the right 205 not all of em came with slip yokes....specially the '72 variety
     
  14. jimmy88

    jimmy88 1/2 ton status

    Joined:
    Feb 17, 2002
    Posts:
    351
    Likes Received:
    0
    Location:
    Detroit, MI area
    Agree with "if it ain't broke don't fix it".
    If the 3/4 point isn't a big deal then why would anyone pay $700 for 3:1 gears (just over 1 point) for the 205? That makes the 3/4 point worth $500.
     
  15. gokartergo

    gokartergo 3/4 ton status Staff Member Moderator

    Joined:
    Dec 2, 2000
    Posts:
    5,855
    Likes Received:
    0
    Location:
    Hollister, CA
    Ley me count the ways they are bad...
    [​IMG]
    Broke 2 of them in less then 8 months..
     
  16. FRIZZLEFRY

    FRIZZLEFRY 1/2 ton status

    Joined:
    Apr 20, 2001
    Posts:
    3,271
    Likes Received:
    134
    Location:
    Clovis CA
    Now how exactly did you do that again? /forums/images/icons/grin.gif
     
  17. gokartergo

    gokartergo 3/4 ton status Staff Member Moderator

    Joined:
    Dec 2, 2000
    Posts:
    5,855
    Likes Received:
    0
    Location:
    Hollister, CA
    OK, OK one was my fault.. But the other one wasn't... /forums/images/icons/smirk.gif
     
  18. m j

    m j 1/2 ton status

    Joined:
    Dec 28, 2001
    Posts:
    4,606
    Likes Received:
    0
    the only reason I could see buying the 3:1 set is to add to a doubler
     
  19. Grim-Reaper

    Grim-Reaper 3/4 ton status Author

    Joined:
    Feb 17, 2000
    Posts:
    7,385
    Likes Received:
    0
    Location:
    Atlanta
    JESSE/DRIVELINEMAN! Your help needed!

    </font><blockquote><font class="small">In reply to:</font><hr />
    Good answer Grim. 64k question: how much angle is too much? It seems to follow that the further you pull the slip yoke out the more it will tend to slightly cock and the worse the binding will be. Guess a sloppy yoke would be even worse yet.



    [/ QUOTE ]

    You know that's a good question. Let's see if Jesse see's this as can give us a good answer.
     
  20. Bullet

    Bullet 1/2 ton status

    Joined:
    Mar 14, 2001
    Posts:
    1,222
    Likes Received:
    0
    Location:
    Abilene, Texas
    Re: JESSE/DRIVELINEMAN! Your help needed!

    Thanks for all of y'alls opinion's, its just that I cant make my mind up if that slip yokes are that bad. I mainly do mud and trails. The only rocks the Jimmy will ever see will be any runs to The Slab or Mason, or maybe even Moab next year /forums/images/icons/cool.gif My rig is flexy, no doubt in my mind, last offroading trip where I blew the 350, I rubbed the 37's in the rear inner fenderwell /forums/images/icons/ooo.gif And it seems thats where the SY weaknes's is. I really dont plan to swap a 205 becasue i dont want to bother with adapters, VSS cables and shifter modifications. I have never had a problem with the 241 (knock on wood) so I plan to keep it, hell they even make a 4:1 kit for it if I wanted to crawl that bad. Steve ran a SY 241 for a long time and look at some of the trials he ran, Moab, Powerhouseetc... and he had no problems that I know of...
     

Share This Page