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input shaft for T-98

Discussion in 'Builds and Fabricators Forum' started by kamel, Apr 16, 2005.

  1. Apr 16, 2005
    kamel

    kamel Senior Curmudgeon

    Erlanger, Kentucky
    Joined:
    Jun 10, 2003
    Messages:
    891
    OK fabricators -- I have two input shafts for the T-98. One is for a Ford application, and the other is for the jeep truck with the 230 engine (same as M715?). Both are correct 27 tooth shafts for the granny low first gear.

    So, they are both thicker than the F-4 input shaft - the Ford is shorter than the F-134 application, and I think that the jeep shaft is about the correct length (not sure yet). Correct length should be 1" longer than T-90. Correct diameter should be same as T-90

    What I have been thinking is that perhaps the jeep 230 engine input shaft could be turned down to the correct size (same as T-90). Now, the splines for the clutch become problematic, but I can't see any reason why they couldn't be re cut as well.

    alternatively, the Ford input shaft is thicker, but shorter than the F-134 T-98 input shaft.
    So---- could the shaft be turned down to F-134 size, then cut and have a T-90 shaft welded on to get the length required for the F-134 T-98 input shaft. Keeping the shaft aligned would be a problem in the welding jig.

    I think either could be done, I just wonder if anyone here has ever tried something like this.

    Any comments?
     
  2. Apr 16, 2005
    jason

    jason Member

    worcester mass
    Joined:
    Oct 27, 2002
    Messages:
    58
    i have a friend in PA who sent a couple of inputs ( T-98's ) to moser to cut and respline, came out mint and still holding, cost was only like 90.00 or so dollars i would go this route first then try having one welded.

    speaken from a welders point of view i worked for a company that used to re-claim and re-build all types of gears and shafts for one-of-a kind applacations and its not as easy as welding two together, it can be done not saying that but i think sending it to moser to re-spline would be the better way, jason.
     
  3. Apr 16, 2005
    Ghetto Fab.

    Ghetto Fab. Member

    Atascadero, Ca.
    Joined:
    Jan 13, 2005
    Messages:
    512
    Yup, I'd send it out to be resplined also. Way to difficult to weld and I'd worry about not having full penetration as well as creating a stress riser in the shaft material.

    I would also find out if the shaft needs to be heat treated again or surface hardened after resplining.

    Its been done before.

    Kevo
     
  4. Apr 16, 2005
    m38willys

    m38willys Jeep Vice

    Green Cove...
    Joined:
    Sep 30, 2002
    Messages:
    690
    Kamel, what difference does it make. Why not just use a different clutch disc and pilot bushing?
     
  5. Apr 17, 2005
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    Medford Mass USA
    Joined:
    Aug 10, 2003
    Messages:
    23,596
    Yeah, I'd think if you can find a clutch disk with the same splines, it'd be fine. Are the splines for the 230 shaft and the Ford shaft the same? If so, a Pinto or Falcon disk might work.

    The 230 is a real oddball - it has some elements in common with the Super Hurricane 226 (ie bearing sizes) but not much else.

    What are you trying to do - mate a Ford T98 with an F134?
     
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