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Anyone broken a conversion u-joint?

Discussion in 'The Garage' started by mikey_d05, Oct 21, 2005.

  1. mikey_d05

    mikey_d05 1 ton status GMOTM Winner

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    Making a list of things I forgot to pack in my trail truck for this weekend's trip and realized that I don't have a spare S44-1350 joint...the rearmost joint in my driveline.

    Anyone broken one? What circumstances? I'm already short of cash and the diesel bill from this weekend sure isn't gonna help....should I shut up and pick one up or is it reasonable to go without one?
     
  2. Beast388

    Beast388 1/2 ton status

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    I haven't broken my conversion joint....yet. I am sure one of these trips I will. Does Gilbert have a good parts store like Napa? If they do, then you might be able to risk it. But you'll lose valuable wheelin' time when chasing down parts. ;)
     
  3. 83ZZ502_Jimmy

    83ZZ502_Jimmy 1/2 ton status

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    Yes.
     
  4. mikey_d05

    mikey_d05 1 ton status GMOTM Winner

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    care to elaborate? circumstance, tire size, how heavy your foot is?

    It'd be much appreciated.
     
  5. 6.2Blazer

    6.2Blazer 1/2 ton status

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    I've been running the Napa version for years on my truck and never broken one, worn some out from poor angles, but never broken one. The K5 has been a trail-only rig since the 14FF has been installed but made 150-250 mile roundtrip on pavement at least once per month for several years.

    Originally it was a welded 14FF with a l/s equipped 3/4 ton front on 35's, and then a locked D60 front with 38's. I've broken two 10-bolt axleshaft u-joints (Spicers) and two D60 30-spline front stubs and a necked down inner shaft all at different times, but never the 447 conversion u-joint.
     
  6. 83ZZ502_Jimmy

    83ZZ502_Jimmy 1/2 ton status

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    Sand drag track. 33" BFG AT. Hit gas at line, boom.
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    ZZ502 Crate motor... :D

    Had new driveshaft built with 1350's. Problem solved.
     
  7. 4xcrazy

    4xcrazy 3/4 ton status

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    interesting, i ran a conversion joint from Napa when i got the new diff, wore out that u-joint in about 3 months,,,went the cheapo way, (autozone) and has been on there ever since, about 2.5 years now. :D
     
  8. PsychoticDeadGuy

    PsychoticDeadGuy 1/2 ton status

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    what are all the size joints you have? i have an s44-1350 and a 1350 in the rear. i just bring a spare conv. because i think its the weekest link...
     
  9. 4xcrazy

    4xcrazy 3/4 ton status

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    honestly, i do not know anymore, the stock on the front of the rear shaft, whatever that is for a 1/2 ton Burb, and the conversion on the rear of the rear d.s. from a 1/2 ton driveshaft, to a 3/4 ton, diff...

    it's been so long since i have had to deal with it, i forgot what they were,,, :doah:
     
  10. PsychoticDeadGuy

    PsychoticDeadGuy 1/2 ton status

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    the stock one should be an s44. i would carry a spare s44 because that would be your weekest link.
     
  11. rcurrier44

    rcurrier44 1/2 ton status

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    Yep I have taken out a couple. I usualy eat up the bearings on the small side...the large side never has a problem. The joint doesn't see much angle since I run a CV at the tcase. Its just hard on those little joints running a welded 14bolt with 44" tsls.
     
  12. Hossbaby50

    Hossbaby50 3/4 ton status

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    I have broken everything in my rear driveline except that ujoint. I blew apart my NP208, grenaged the S44 ujoint at the case, ripped slipyoke ears & driveshaft ears, and dented the driveshaft. I did all this carnage all at the same time too. :D The conversion ujoint is the only thing that survived.

    Harley
     
  13. thebigdaddyof2

    thebigdaddyof2 1/2 ton status

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    Exactly!

    I have broken countless D44 parts.
    I have broken some D60 parts.
    I have broken NP241 parts.
    I have creased and "ground on" (abused) the driveshaft.
    I just busted the slip yoke (again, 2nd time), the S44 joint, AND the driveshaft slip yoke all at once- but the damaged OEM driveshaft and the conversion joint still survived.
    I run a crate 350, 700R4, 241, 35sp D60 w/detroit, and a welded 14BFF all on 40"TSLs.

    4r.jpg

    5r.jpg
     
  14. thebigdaddyof2

    thebigdaddyof2 1/2 ton status

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    I am retiring the 6 year old conversion joint as the driveshaft is now a "trophy"...
     
  15. mikey_d05

    mikey_d05 1 ton status GMOTM Winner

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    Well, I ran it this weekend and it didn't break, so I guess they're alright :D
     
  16. k5 krawler 50

    k5 krawler 50 1/2 ton status

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    hijack...
    Got any wheeling pics..?

    Hijack off..
     
  17. mikey_d05

    mikey_d05 1 ton status GMOTM Winner

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    Hopefully I will in a day or two, I don't have any good shots of myself since I was driving but one of the guys I went with is supposed to send me some soon.
     
  18. Pookster

    Pookster 1/2 ton status

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    I run the u-joint in the other direction. I forgot who I bought a CV drive shaft from on CK5, but it was made with 1350's- except for one little problem, I only ran a 10B rear- Figured, hey, what the heck right? at least I'd be ready for 1 ton later.
     

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