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Muncie 4 speed Leaks

Discussion in 'The Hokey Ass Message Board' started by concreteman, Jul 8, 2013.

  1. concreteman
    Joined: May 25, 2008
    Posts: 1,171

    concreteman
    Member

    Hi All
    I just put a Muncie in my 34 -looks like it leaks out the front -between the Lakewood bell housing and trans- car has a good rake to - low in front - any ideas (would rather not pull it)
    Thanks Chris
     
  2. lorodz
    Joined: Jul 26, 2009
    Posts: 3,727

    lorodz
    Member

    You have to pull it and reseal the input shaft or front seal of transmission.

    Posted using the Full Custom H.A.M.B. App!
     
  3. Those only have a slinger that pushes oil back into the transmission. Mine will leak when parked on a steep downhill slope. At least that is what the transmission shop claims.
     
  4. fab32
    Joined: May 14, 2002
    Posts: 13,985

    fab32
    Member Emeritus

    If the trans has a bunch on miles on it they are prone to leak between the counter gear shaft and case.

    Frank
     

  5. mike in tucson
    Joined: Aug 11, 2005
    Posts: 520

    mike in tucson
    Member
    from Tucson

  6. I always have a drip or two on my case. I don't like it, but I check the level from time to time it never seems low.
     
  7. 3Deuce40
    Joined: Oct 17, 2006
    Posts: 691

    3Deuce40
    Member
    from Colorado

    If its a Muncie, it leaks. I have two and they both leak and both are newly rebuilt.
     
  8. Yup, I'll second what LORODZ and CB Chief said. You do have to pull it to do anything to the input shaft, and there is a paper gasket between the input shaft collar and the case, but only a slinger ring keeps oil from running up the input shaft itself. You might be able to isolate which is leaking by cleaning all the leaked 90w off the tranny and scatter shield, and squirting a can or two of brake/carb cleaner into the throw out bearing fork hole to get any accumulated 90w out of there, then let it sit and see if it leaks while just sitting. I forgot to mention, while your under there, pull the fill plug and make sure it's not overfilled. Level should be just even with the bottom of the threads in the fill hole when the car is level. If it leaks like this (sitting still and level, it's either over filled, or the gasket on the input collar is bad. If it doesn't leak unless you drive it, then the odd's are it's the flinger inside. I've seen them bent and/or completely left out.
     
  9. atorsiello
    Joined: Oct 25, 2010
    Posts: 23

    atorsiello
    Member
    from New Jersey

    Mine has been like that for 10 years. I check the fluid level about once a year and have never needed to add any, go figure.

    Alan
     
  10. Truckedup
    Joined: Jul 25, 2006
    Posts: 4,660

    Truckedup
    Member

    Probably leaking from the counter shaft hole. The hole gets a bit worn so the shaft might be loose and it leaks. You can loosen the bolts ,and if possible,back out the tranny an inch,dry up the oil and squeeze in some sealer between the case and bellhousing,bolt it back up ....Works sometimes...
     
  11. onetrickpony
    Joined: Sep 21, 2010
    Posts: 761

    onetrickpony
    Member
    from Texas

    It's not always easy to tell, but if it's coming from between the tranny and bellhousing, it's the counter shaft hole. If it's inside the bell, it's the front gasket or the slinger.
     
  12. Dennis D
    Joined: May 2, 2009
    Posts: 851

    Dennis D
    Member

    More apt to be leaking from the countershaft than the input. In the front bearing retainer there is a drain-back slot that lines up with a hole in the case to keep the oil from building up in that area. If that hole is filled with excess sealer it may cause your leak. If it is the countershaft I would be suprised if you get it to seal without draining the fluid before you try the RTV as it will contaminate before it sets up. Some of the best sealer I have found is sold by Toyota (sorry) and is high dollar. Part number on it is 00295-00103. Dennis D
     
  13. bigbob55
    Joined: Mar 19, 2010
    Posts: 807

    bigbob55
    Member
    from Pittsburgh

    May seem like a stupid comment but can we assume the level is not too high to start with?

    Had the same complaint from a friend and when I took out the fill plug gear lube ran out the hole and filled 3/4 of a quart jar before it stopped. When I asked how he got so much lube in there to start with he filled it while it was out of the car and laying on it's side....don't overlook the obvious.
     
  14. Amen on the overfilling! Mine will leak a little around the input shaft when parked on a steep grade nose downward occasionally but doesn't leak on level ground at all. Prior to being rebuilt it leaked in a few places, I always told people that it was marking territory.
     
  15. 1934coupe
    Joined: Feb 22, 2007
    Posts: 5,070

    1934coupe
    Member

    What he said!

    Pat
     
  16. old.hot.rodder
    Joined: Oct 13, 2012
    Posts: 287

    old.hot.rodder
    Member

    Yes, probably leaking at the counter shaft as already said. I have repaired two of these by cleaning the cavity extremely well and filling it with a quality two part epoxy. The other way is to machine the bore and resize.
     
  17. concreteman
    Joined: May 25, 2008
    Posts: 1,171

    concreteman
    Member

    Thanks Guys
    for all the help -I may try to move the trans back an inch or so
    I have an hyd throw out bearing and would need to pull the engine to seperate

    Truckedup;9045636]Probably leaking from the counter shaft hole. The hole gets a bit worn so the shaft might be loose and it leaks. You can loosen the bolts ,and if possible,back out the tranny an inch,dry up the oil and squeeze in some sealer between the case and bellhousing,bolt it back up ....Works sometimes...
    [/
    Some of the best sealer I have found is sold by Toyota (sorry) and is high dollar. Part number on it is 00295-00103. Dennis D[/QUOTE]
     
  18. 1971BB427
    Joined: Mar 6, 2010
    Posts: 8,766

    1971BB427
    Member
    from Oregon

    My super T10 is always damp around the side cover. Never drips a drop, and never low, but no matter how often I wipe it off dry, it is damp around the cover the next day.
     
  19. Bosco1956
    Joined: Sep 21, 2008
    Posts: 545

    Bosco1956
    Member
    from Jokelahoma

    X2 seen this as much as anything
     
  20. 60 Belair
    Joined: Feb 19, 2006
    Posts: 747

    60 Belair
    Member

    I think when a Muncie is not leaking that's when you have to worry :D
     
  21. concreteman
    Joined: May 25, 2008
    Posts: 1,171

    concreteman
    Member

    Thanks
    Starting to think your right - my only leaks a small amount now- hope the trans is not running too low on oil :eek:
     

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