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Just itchin to drive but having tranni problems 57 Ford Custom 300
  • thaddeus333
    Posts: 20Greasemonkey
    We have everything else done and tried to take it for a drive today and the Ford o matic Auto tranni seems to be acting up. The car starts fine and idles in Park and Neutral but when I shift into Revers Dr or Dlo the entire car shakes, the idle drops and the car acts like it wants to die. The fluid levels were fine. I have pulled the tranni and found that the Torque Converter(which has the flywheel bolted onto it) has somehow managed to travel around inside of the Bell housing. There is about a 2.5 inch long section of the on the bottom collar of the bell housing that has been scarred by the teeth of the flywheel, it is over 1.5 inches wide(basicly the entire depth of the collar on the bell housing.) I can not see why the torque convertor would be able to do this damage or move for that matter. Any body have any ideas or similar experiences that can shed some light on the situation.
  • Oldcar_MechanicOldcar_Mechanic
    Posts: 1,786Platinum Member
    While you had the trans out did you look for something that contribute to that?



    Everything that I find on the Ford transmissions of that era in my books show that the flywheel bolts to the crakshaft and the converter bolts to the flywheel. WHat holds the flywheel to the engine?



    You could try contacting Fatsco and they may have a better idea.



    Ron
  • thaddeus333
    Posts: 20Greasemonkey
    Thank you for your reply. I still have the trans out. The flywheel is actually bolted to and completes the torque convertor. The torque convertor along with the flywheel are then bolted to the drive plate( I am unsure if this is the correct name for the plate that 6 bolts hold onto the cranshaft). I don't know how this could have happened because the front of the torque convertor has a dowl/huge round nub that actually fits directly into the recessesion in the back of the crankshaft and then botled to the actual drive plate which is directly bolted onto the crankshaft. From the damages on the bellhousing it appears the torque convertor rocked out on the top causing the teeth on the torque convertor to bite into the bellhousing. Could this happen if the shaft is worn on the trani or if the torque convertor is worn? Could it be caused by a bent drive plate? I am at a total loss and truly appreciate your help/
  • Oldcar_MechanicOldcar_Mechanic
    Posts: 1,786Platinum Member
    Does there apear to be any damage at the intersection where the converter fits into the crankshaft (the area where the large nub fits).



    If you try to move the converter while still in the trans, is there a lot of movement?



    I'm guessing that the trans front pump shaft where the converter slids into may be bad.



    Hope this helps

    Ron
  • thaddeus333
    Posts: 20Greasemonkey
    Thank you again for your reply. There is a decent amount of play/slop when the torque convertor is put into the transmission. Once it bottoms out inside of the yoke, I can push it in about 1/2 an inch on top and on bottom. There is some new scarring and blueing at the base of the large nub on the flywheelwhere it meets the torque convertor. What I can't figure out is why it was able to move in the first place. It is bolted solidly to the flex plate which is bolted solidly to the crankshaft.