Results 1 to 10 of 10

Thread: Transmission gets hot but shifts fine

  1. #1

    Array
    Status
    Offline
    Join Date
    05-15-2016
    Posts
    151
    Location

    Earth - California
    Vehicle

    1988 Mitsubishi Mighty Max
    Engine

    G54B

    Transmission gets hot but shifts fine

    Could this be because I mixed two different gl-4 rated oils? when it starts to get hot it also slows down the speed. When it's cold it runs normal. also how can you tell if you have a bad clutch.

  2. #2

    Array
    Status
    Offline
    Join Date
    06-15-2014
    Posts
    3,147
    Location

    Adelaide, South Australia
    Vehicle

    1985 Mitsubishi L200
    Engine

    G63B
    Bad clutch will be slipping or shuddering, excessive pedal travel, hard to shift into reverse (these symptoms are related to all the transmission parts - clutch, pressure plate, thrust bearing, flywheel and clutch arm mechanism). Heat is a by product of friction. Maybe add a friction modifier to the gear oil, check your oil level etc. This will also swallow up HP. I want to try out Petron Plus in a transmission but the stuff isn't cheap - it had better live up to the hype...
    support the forum that supports you - join and donate to MightyRam50.Net Get perks and donations $15 USD and over receive official MightyRam50.Net window decals

  3. #3

    Array
    Status
    Offline
    Join Date
    05-15-2016
    Posts
    151
    Location

    Earth - California
    Vehicle

    1988 Mitsubishi Mighty Max
    Engine

    G54B
    Will clutch replacing require flywheel grinding?

  4. #4


    Array
    Status
    Offline
    Join Date
    04-04-2011
    Posts
    709
    Location

    Columbus, OH
    Vehicle

    1992 Mitsubishi Mighty Max
    Engine

    Other
    you should have the flywheel surfaced, look for burned/hot spots.

    examples.

    Click image for larger version. 

Name:	IM002198.JPG 
Views:	11 
Size:	87.1 KB 
ID:	20283

    Click image for larger version. 

Name:	IM002196.JPG 
Views:	10 
Size:	87.0 KB 
ID:	20284

  5. #5

    Array
    Status
    Offline
    Join Date
    01-24-2017
    Posts
    478
    Location

    New Zealand
    Vehicle

    1981 Mitsubishi L200
    Engine

    Other
    It's normally the done thing as it's all apart already. Most clutch places will do it for free if you buy the rest from them

  6. #6

    Array
    Status
    Offline
    Join Date
    06-15-2014
    Posts
    3,147
    Location

    Adelaide, South Australia
    Vehicle

    1985 Mitsubishi L200
    Engine

    G63B
    Friend of mine has had 2 flywheels overheat and crack through the crank mounting bolts. Scary...
    support the forum that supports you - join and donate to MightyRam50.Net Get perks and donations $15 USD and over receive official MightyRam50.Net window decals

  7. #7

    Array
    Status
    Offline
    Join Date
    05-15-2016
    Posts
    151
    Location

    Earth - California
    Vehicle

    1988 Mitsubishi Mighty Max
    Engine

    G54B
    Sorry for the late reply guys. My transmission is toast I think. Don't know if a rebuild Will fix it. It sounds like a telephone is ringing when I shift to fourth and fifth. Very annoying. I also don't know if the engine is weak or if it's all the transmissions fault. When I go up hills, the truck can barely go up them at all. The speedometer maxes out to 55mph. Only when going down hill does the truck go past 55mph. It sucks going on the highway and seeing everyone pass you and go out of view and I'm still struggling to get up the hill. Surely our trucks can handle these hills, right?

  8. #8

    Array
    Status
    Offline
    Join Date
    06-15-2014
    Posts
    3,147
    Location

    Adelaide, South Australia
    Vehicle

    1985 Mitsubishi L200
    Engine

    G63B
    With a stock carb 55mph is about what they can handle (you can get it to perform better by re-tuning the ignition - my tip is here http://www.mightyram50.net/vbulletin...ll=1#post59777) You getting any vibration through the truck? Go hunting for something broken or worn out - trans mount, uni joints etc. The output bearing might be done. If you still have all gears and it feels like it shifts through properly, it's not dead yet. I would also try something out - drain some oil out and add diesel fuel (maybe a little less than a cup), drive it for a day and then dump the lot and add fresh gear oil with a friction modifier that is safe for these gearboxes. Don't beat on it, just regular around town below highway speeds. As for a new clutch, if you have a small hand held electric orbital sander you can use it to de-glaze the face of the flywheel (it should only require machining if it's been munched by a bad clutch friction disc).
    support the forum that supports you - join and donate to MightyRam50.Net Get perks and donations $15 USD and over receive official MightyRam50.Net window decals

  9. #9

    Array
    Status
    Offline
    Join Date
    01-24-2017
    Posts
    478
    Location

    New Zealand
    Vehicle

    1981 Mitsubishi L200
    Engine

    Other
    Have had the very same ringing through a trans. Went away when holding the gearstick. Was more water than oil in it, came right after a flush and refil with good oil

  10. #10

    Array
    Status
    Offline
    Join Date
    05-15-2016
    Posts
    151
    Location

    Earth - California
    Vehicle

    1988 Mitsubishi Mighty Max
    Engine

    G54B
    She's going down. I'll be back to post results. Geezer, and everyone thanks for the replies. I have considered everything and the transmission will go down to replace or rebuild

Tags for this Thread

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •