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420A URGENT help needed - gearbox broke

Posted by zaXer, Mar 7, 2019

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  1. zaXer

    zaXer Probationary Member

    19
    3
    Joined Oct 13, 2018
    Varna, Europe
    Need as much info as you guys can give me about taking on/off the gearbox on a 420a 2g, my gearbox broke and need to get the car back on the road asap, need to know what models from other cars gearboxes fit - talking about MANUAL
    info on AUTO swap from manual to auto also is welcome if i find auto gearbox and if its relatively easy i can swap it in

    IF anyone has had a similar problem please give me as much info as you can - i had no choice and drove the car back to my garage and the car runs fine on 1st, 2nd and 3rd, also reverse, only first when engaging has a very slight clunk sound but not all the time, the motor runs fine as well

    what if i weld the hole shut and fill it with new oil and try going that way? do you think it could be a one-time problem and i'll get away with just welding the hole closed?

    i'll be spending my whole night on here searching for any threads that can help me on taking on/off the gearbox, possibly a manual-to-auto swap, what could ahve caused it etc, but if you know anything please share with me! i need to get the car back on the road tomorrow or within the next 2 days
     

    Attached Files:

    Street Build 423  12

    1999 Mitsubishi Eclipse N/T
    manual · 2G DSM
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  2. silvreclips

    silvreclips Proven Member

    1,027
    203
    Joined Jul 19, 2005
    Greenville, South Carolina
    The diff pin started coming out and hit the side of the case. You could take the trans apart, fix the differential and have the case welded back together. The hole is not that bad.

    You can also grab a trans from a neon and drop it right in. Early 2000 have the hydraulic clutch like the eclipse does. If you find a late 90s neon they have a cable clutch and the bell housing is different.

    Some of the neons had a different final drive gear ratio but you can still use those transmissions.

    Also check 90 s avengers and early 2000 pt cruisers
     

    Autocross Build 232  1

    1998 Mitsubishi Eclipse N/T
    fwd · manual · 2G DSM
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    VelocitàPaola likes this.
  3. rabenne

    rabenne Proven Member

    1,010
    239
    Joined Apr 21, 2006
    Racine, Wisconsin
    I have a complete car with auto transmission that is being parted out. 420a car. PM if interested. Located in southern Wisconsin.
     

    Street Build 242  5

    1996 Mitsubishi Eclipse GSX
    awd · automatic · 2G DSM

    Street Build 186  12

    1997 Mitsubishi Eclipse GST
    fwd · automatic · 2G DSM

    Street Build 7K  9

    1995 Eagle Talon TSi
    awd · manual · 2G DSM
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  4. zaXer

    zaXer Probationary Member

    19
    3
    Joined Oct 13, 2018
    Varna, Europe
    Thanks a lot! Do you think the pin might have hopped out on the road (i drove the car back to the garage no issues almost) or if i open the gearbox, tighten it back in place and weld the case, it'd be alright?
    thanks a lot but i'm located in Europe :)
     

    Street Build 423  12

    1999 Mitsubishi Eclipse N/T
    manual · 2G DSM
    Loading...
  5. silvreclips

    silvreclips Proven Member

    1,027
    203
    Joined Jul 19, 2005
    Greenville, South Carolina
    Its probably still in the differential. Its a rather large pin. It should have a pin that holds it in the diff, it has probably broken allowing the diff pin to start sliding out. There is a newer design that they put in the newer neons that removes that spring pin and adds diff pin saver tabs that just contain the pin.

    If you pull the trans, you can just pop the bell housing off of the trans and pull the diff to inspect the damage. All of the other guts in the trans will stay inside. If it is repairable, you can make the repair and just seal it back up.

    upload_2019-3-7_16-51-47.png

    upload_2019-3-7_16-52-20.png
     

    Autocross Build 232  1

    1998 Mitsubishi Eclipse N/T
    fwd · manual · 2G DSM
    Loading...
  6. VelocitàPaola

    VelocitàPaola Moderator

    4,896
    109
    Joined Jun 14, 2005
    Ft. Lauderdale, Florida
    Just to confirm, are you sure you actually have a 420A? I'm only asking because I know the European version of the GS (and maybe RS too?) had an N/T 4G63.
     

    1K  21

    1995 Mitsubishi Eclipse N/T
    manual · 2G DSM
    Loading...
  7. zaXer

    zaXer Probationary Member

    19
    3
    Joined Oct 13, 2018
    Varna, Europe
    absolutely sure it is imported from florida :) i ended up replacing the whole gearbox because i had no time left to play with fixing it
    i used a box from a pt cruiser with the same engine
     

    Street Build 423  12

    1999 Mitsubishi Eclipse N/T
    manual · 2G DSM
    Loading...
    silvreclips likes this.
  8. VelocitàPaola

    VelocitàPaola Moderator

    4,896
    109
    Joined Jun 14, 2005
    Ft. Lauderdale, Florida
    Sounds good--I'm glad you got it sorted out!
     

    1K  21

    1995 Mitsubishi Eclipse N/T
    manual · 2G DSM
    Loading...
  9. zaXer

    zaXer Probationary Member

    19
    3
    Joined Oct 13, 2018
    Varna, Europe
    thanks :) my speed is reading wrong stuff now though, i guess i need to swap out the speed sensor from my box to the new one - it was an EU PT cruiser so it probably has a km/h sensor rather than a mp/h :)
     

    Street Build 423  12

    1999 Mitsubishi Eclipse N/T
    manual · 2G DSM
    Loading...

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