The Authoritative Galant VR-4 Resource

Join the best E39A 1991-1992 Mitsubishi Galant VR-4 community and document your GVR4 journey.

  • Software Upgraded - Reset Your Password to Login
    In order to log in after the forum software change, you need to reset your password. If you don't have access to the email address you used to register your GVR4.org account, you won't be able to reset your password. In that case, follow the instructions here to regain access to the forum.

Stock Galant GSX Transmission Rebuild Questions

PoiBoi

Member
Joined
Dec 19, 2021
Messages
5
Howdy, I've got an incredibly stock 1991 Galant GSX I picked beginning of this year from Adam over at Sodo-Moto. Sadly this past month (what I believe to be) my intermediate shaft bearing has gone up. No chunks or anything in my fluid, however there is alot of play in my in my intermediate shaft, enough to let the nut under load grind against my transmission cover housing.

I'm looking to rebuild my GSX W5M312VQBK trans and there are a few thing I'd like to know before I start tearing it down. I've heard that (besides being a weaker transmission all together) some of the bearings in the NA W5M312 trans are weaker than the ones in the W5M332s the turbo cars came with. Will VR4/Turbo DSM spec bearings fit the GGSX trans? Are the synchros different sizes than the vr4/Turbo DSMs or is it all the same? Are all 91 shift forks identical for these year cars?

I havn't had much luck searching the forum for alot of this information, if I blinded it my apologies.

20211219_200838_HDR.jpg
 

wowzer

Well-known member
Joined
Jan 15, 2007
Messages
1,721
Location
CS, IL
I hade the Canada version of the GSX and the problem I had was the coupler went bad. The GSX trans are great for the long gears, but they are weak and tend to have issues. I blew the viscous coupler on mine with stock power. The problem I had was finding said part at the time was impossible. I know a few others have had issues as well and found that changing to a turbo trans helped. I would try and find a drivetrain out of dsm that you might be able to swap over. You will need all the drivetrain parts and mounts.

I doubt the bearings are the same as the cases are a little different. I will try and get OHB to answer that.
 

PoiBoi

Member
Joined
Dec 19, 2021
Messages
5
I hade the Canada version of the GSX and the problem I had was the coupler went bad. The GSX trans are great for the long gears, but they are weak and tend to have issues. I blew the viscous coupler on mine with stock power. The problem I had was finding said part at the time was impossible. I know a few others have had issues as well and found that changing to a turbo trans helped. I would try and find a drivetrain out of dsm that you might be able to swap over. You will need all the drivetrain parts and mounts.

I doubt the bearings are the same as the cases are a little different. I will try and get OHB to answer that.
Thanks for the response, he reached out so I'll hit him up when i get a second to breath from work.

Funny enough, mine is also a Canadian GSX. First owner bought it new, importer i got it from picked it up at his estate sale. I've been trying to track down a turbo manual awd trans and diff but i havn't had much luck so far. We'll see.
 

hpt_simon

New member
Joined
Jan 13, 2022
Messages
2
if the box is too far gone to rebuild, and full 5th gear assembly is ok, i would buy this, ;P
 

Recent Forum Posts

Top