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Who's busted the Tranny/Transfer Adapter

Discussion in 'The Garage' started by noahrob, May 1, 2007.

  1. noahrob

    noahrob 1/2 ton status Author

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    465/205...anybody crack those things, did you try to weld it up or just go to the JunkYard and get a new one?
     
  2. drop the hammer

    drop the hammer 1/2 ton status

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    I can due you one better, cracked a 700-R4. I say why weld and risk it when its cheap from the junk yard
     
  3. noahrob

    noahrob 1/2 ton status Author

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  4. chevy wrangler

    chevy wrangler 1/2 ton status

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    this one??

    [​IMG]

    [​IMG]
     
  5. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    That's not an adaptor, that's a coupler (nice job BTW...)

    I broke a 465/205 adaptor once, caught some air coming out of a mudhole and when I landed the front driveline bottomed. :doah:

    The crack was about 4 or 5" long on the round part. I grooved it out, slowly warmed the whole thing up to about 300 F, then welded the crack with some Ni-rod, peened the surface of the weld. Then I added a bit of post heat and buried it in a bucket of floor dry for 8 hours so it'd cool slowly.

    That adaptor lasted another 5 years without breaking or leaking...until I ran across another adaptor in perfect shape for $20.

    Rene
     
  6. 1977k5

    1977k5 3/4 ton status Vendor

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    I cracked the original one on mine and didn't notice it until it started leaking. I feel really lucky, it was cracked all the way through :doah:

    Do not weld it. Not only is it cast, but it is certainly saturated with oil and you will never get a strong weld out of it. Just get a new one, it isn't like they're hard to find.
     
  7. gmc4cw

    gmc4cw 1/2 ton status GMOTM Winner

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    I cracked one. just get another one. I have scrapped at least 3 that I know off. now I wish I had kept them to sell.:doah:
     
  8. Mudstud

    Mudstud 1/2 ton status

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    If welded properly as Trusty describes it'll live a long second life. I've busted my TH350 housing behind the 203 adaptor before.
     
  9. BigBen

    BigBen 1/2 ton status Premium Member

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    Just have to suggest this:

    Do you have the bracket that ties the 205 to the frame?

    My personal thought is that a lot of people crack adapters/cases/housings because they don't have the bracket on their truck....

    Just a thought.


    -Ben
     
  10. MattK

    MattK 1/2 ton status

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    NWF makes an isolator bracket, but I'm not sure how doable it is with dual exhaust.
     
  11. BigBen

    BigBen 1/2 ton status Premium Member

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    There is a stock bracket that bolts into the two threaded holes on the outside edge of the 205. it's an 'L' shape and it ties into holes in the frame. It's not that big, but I would have to believe it saves a lot of stress on the adapter.

    It didn't cause me any trouble with my dual exhaust. I can snap a picture tonight if I remember.

    -Ben
     
  12. BigBen

    BigBen 1/2 ton status Premium Member

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    Like this: (Similar)


    http://coloradok5.com/forums/showthread.php?t=149822
     
  13. JDNobodi

    JDNobodi 1/2 ton status Premium Member

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    I broke a TH350/NP205 adapter and the T/C input shaft pulling out my drive way once.:eek1: :haha: I even had the frame mount brace at the time, so it didn't help.
     
  14. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    Not all 205's have threaded holes on the side, and that brace was not an across the board thing. I'm pretty sure it was only the earlier years that got that.

    Rene
     
  15. noahrob

    noahrob 1/2 ton status Author

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    I only noticed the cracks after it started leaking...I'll see if I can weld it, if not, I'll try the junkyard, mostly I don't want to drop the tranny/transfer again, they're such a PITA to get back in the truck...
     
  16. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    The leaking gear lube was my first clue too. Fortunately the pre-heating burns the lube out of the material...:D

    Rene
     
  17. Mudstud

    Mudstud 1/2 ton status

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    I have the rod that goes from the lower bolt on the bell housing to the side of the 205. It's still be nice to get something else to hold up the ars end of the 205. Mayeb beat a bushing inbetween the skid plate and 205.:wink1:
     
  18. noahrob

    noahrob 1/2 ton status Author

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    OK, got a new adapter, did you guys remove the tranny and transfer case or just yank off the transfer case and leave the tranny in the truck? Also, is there a bearing in the front of the case? Any input is appreciated. Thanks
     
  19. boz42

    boz42 1/2 ton status GMOTM Winner

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    I broke a 350/205 adapter. I did like Rene said, but I brazed it, instead of welding it. It lasted for another 2 years before it broke the second time.
     
  20. 70jimmy

    70jimmy 3/4 ton status Premium Member GMOTM Winner

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    Had mine welded with nickel rod, preheated and post heat in oven then gradual cool. Taken off truck to do. Found it when I was redoing tranny and t-case. 350/205 adapter and I do have the frame support.
     

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