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1G 3000gt vr4 rear diff swap progress

Posted by SasaniFab, Dec 17, 2019

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  1. SasaniFab

    SasaniFab Freelancer

    2,467
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    Joined Dec 1, 2013
    danbury, Connecticut
    So I finally decided to take the plunge and do the swap. For a auto car you need a 6 speed diff, the cups and stock rear axles. The axles need to be shortened , dss offers a set of bars made out of 300m.The 1g driveshaft flange needs to be drilled into the 3000gt pinion flange. The subframe then needs to be chopped down to accommodate for the larger pumpkin. The only thing left for me to do it box in the subframe and weld in the mounts and mustache bar I fabricated.
     

    Attached Files:

    Street Build 4K  20

    1992 Eagle Talon TSi
    645 whp · 498 lb/ft · 1G DSM
    Loading...
  2. bastarddsm

    bastarddsm Proven Member

    5,310
    1,115
    Joined Aug 26, 2003
    Mendota, Illinois
    You have to be very careful how you mount that diff, or you will break the rear cover if you have any power.
     

    Showcar Build 6K  1

    1991 Eagle Talon N/T
    9.805 @ 144.00 · 1G DSM
    Loading...
  3. SasaniFab

    SasaniFab Freelancer

    2,467
    764
    Joined Dec 1, 2013
    danbury, Connecticut
    I will be reinforcing the crap out of the subframe and mounts...
     

    Street Build 4K  20

    1992 Eagle Talon TSi
    645 whp · 498 lb/ft · 1G DSM
    Loading...
  4. SasaniFab

    SasaniFab Freelancer

    2,467
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    Joined Dec 1, 2013
    danbury, Connecticut
    The mounts will be 1/4 inch plate , I know there are a lot of forcing being applied that I need to account for
     

    Street Build 4K  20

    1992 Eagle Talon TSi
    645 whp · 498 lb/ft · 1G DSM
    Loading...
  5. SasaniFab

    SasaniFab Freelancer

    2,467
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    Joined Dec 1, 2013
    danbury, Connecticut
    She’s mounted, now I understand why nobody has any tutorials,it’s a lot of work getting the diff to fit. I’m happy overall..
     

    Attached Files:

    Street Build 4K  20

    1992 Eagle Talon TSi
    645 whp · 498 lb/ft · 1G DSM
    Loading...
    3 diamonds and buddahboost like this.
  6. SasaniFab

    SasaniFab Freelancer

    2,467
    764
    Joined Dec 1, 2013
    danbury, Connecticut
    Diff is installed and mustache bar is 90% completed. Almost ready for testing
     

    Attached Files:

    Street Build 4K  20

    1992 Eagle Talon TSi
    645 whp · 498 lb/ft · 1G DSM
    Loading...
    3 diamonds, Badger167 and buddahboost like this.
  7. SasaniFab

    SasaniFab Freelancer

    2,467
    764
    Joined Dec 1, 2013
    danbury, Connecticut
    Mustache bar is finished , just need to get the car back together
     

    Attached Files:

    Street Build 4K  20

    1992 Eagle Talon TSi
    645 whp · 498 lb/ft · 1G DSM
    Loading...
    camocorvette and buddahboost like this.
  8. SasaniFab

    SasaniFab Freelancer

    2,467
    764
    Joined Dec 1, 2013
    danbury, Connecticut
    More
     

    Attached Files:

    Street Build 4K  20

    1992 Eagle Talon TSi
    645 whp · 498 lb/ft · 1G DSM
    Loading...
    3 diamonds likes this.
  9. bastarddsm

    bastarddsm Proven Member

    5,310
    1,115
    Joined Aug 26, 2003
    Mendota, Illinois
    Not to be a dick, but first time that car leaves hard it is very likely the diff is going to leave the car.
     

    Showcar Build 6K  1

    1991 Eagle Talon N/T
    9.805 @ 144.00 · 1G DSM
    Loading...
  10. SasaniFab

    SasaniFab Freelancer

    2,467
    764
    Joined Dec 1, 2013
    danbury, Connecticut
    Guess we’ll find out
     

    Street Build 4K  20

    1992 Eagle Talon TSi
    645 whp · 498 lb/ft · 1G DSM
    Loading...
    3 diamonds likes this.
  11. SasaniFab

    SasaniFab Freelancer

    2,467
    764
    Joined Dec 1, 2013
    danbury, Connecticut
    Care to elaborate?
     

    Street Build 4K  20

    1992 Eagle Talon TSi
    645 whp · 498 lb/ft · 1G DSM
    Loading...
  12. bastarddsm

    bastarddsm Proven Member

    5,310
    1,115
    Joined Aug 26, 2003
    Mendota, Illinois
    How many fasteners holding it in the subframe?
     

    Showcar Build 6K  1

    1991 Eagle Talon N/T
    9.805 @ 144.00 · 1G DSM
    Loading...
  13. SasaniFab

    SasaniFab Freelancer

    2,467
    764
    Joined Dec 1, 2013
    danbury, Connecticut
    Total including mustache bar..... 9, 3 on each side and 3 on front of diff cover. I can’t take the diff out without dropping the subframe , installing the bolts is difficult as I added a lot of bracing to the mount
     

    Street Build 4K  20

    1992 Eagle Talon TSi
    645 whp · 498 lb/ft · 1G DSM
    Loading...
    DogWhistle likes this.
  14. bastarddsm

    bastarddsm Proven Member

    5,310
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    Joined Aug 26, 2003
    Mendota, Illinois
    It's a good start, but it's likely going to rip em loose and kink your mustache brace, or break the rear cover. Seen that happen to several.
     

    Showcar Build 6K  1

    1991 Eagle Talon N/T
    9.805 @ 144.00 · 1G DSM
    Loading...
  15. ist dwa

    ist dwa Proven Member

    385
    169
    Joined Nov 5, 2009
    Centerville, Ohio
    They can be ripped out, but you need lots o power to do so and launching heavily regularly.
     

    Street Build 257  5

    1990 Eagle Talon TSi AWD
    awd · manual · 1G DSM
    Loading...
  16. SasaniFab

    SasaniFab Freelancer

    2,467
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    Joined Dec 1, 2013
    danbury, Connecticut
    I don’t know how it would be possible for the diff to move. The diff mounts I made are welded to the control arm brackets with box steel .Its a very tight fit. Where the bolts go through I welded grade 8 washers to the steel , it’s very thick. I then went around and added reinforcement to the end of the mounts to stop flexing.
     

    Street Build 4K  20

    1992 Eagle Talon TSi
    645 whp · 498 lb/ft · 1G DSM
    Loading...
    3 diamonds and buddahboost like this.
  17. SasaniFab

    SasaniFab Freelancer

    2,467
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    Joined Dec 1, 2013
    danbury, Connecticut
    I was thinking of doing something like this with the diff cover to add some structural integrity
     

    Attached Files:

    Street Build 4K  20

    1992 Eagle Talon TSi
    645 whp · 498 lb/ft · 1G DSM
    Loading...
  18. b00stedtalon2

    b00stedtalon2 Proven Member

    1,069
    576
    Joined Dec 19, 2005
    Detroit, Michigan
    This looks like a catastrophe waiting to happen. The mustache bar looks good but I would not trust those side supports.
     

    2K  1

    1994 Mitsubishi Evo
    automatic · Lancer Evolution

    Street Build 4K  1

    1993 Eagle Talon TSi AWD
    9.585 @ 143.96 · 1G DSM
    Loading...
  19. SasaniFab

    SasaniFab Freelancer

    2,467
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    Joined Dec 1, 2013
    danbury, Connecticut
    Guys I assure you , it’s not going anywhere....it’s solid, it’s not pretty.... but it’s solid. The car has been launched several times.... nothing has moved. I’m adding a brace to the diff cover as well. This shit isn’t going anywere
     

    Attached Files:

    Street Build 4K  20

    1992 Eagle Talon TSi
    645 whp · 498 lb/ft · 1G DSM
    Loading...
  20. SasaniFab

    SasaniFab Freelancer

    2,467
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    Joined Dec 1, 2013
    danbury, Connecticut
    I decided to tie the mounts internally, by the time I’m
    Done it will be 10x stronger than Oem
     

    Attached Files:

    Street Build 4K  20

    1992 Eagle Talon TSi
    645 whp · 498 lb/ft · 1G DSM
    Loading...
  21. SasaniFab

    SasaniFab Freelancer

    2,467
    764
    Joined Dec 1, 2013
    danbury, Connecticut
    Cont
     

    Attached Files:

    Street Build 4K  20

    1992 Eagle Talon TSi
    645 whp · 498 lb/ft · 1G DSM
    Loading...
  22. SasaniFab

    SasaniFab Freelancer

    2,467
    764
    Joined Dec 1, 2013
    danbury, Connecticut
    Ready for business
     

    Attached Files:

    Street Build 4K  20

    1992 Eagle Talon TSi
    645 whp · 498 lb/ft · 1G DSM
    Loading...
    buddahboost likes this.
  23. bastarddsm

    bastarddsm Proven Member

    5,310
    1,115
    Joined Aug 26, 2003
    Mendota, Illinois
    What in the 7 day meth binge is that all about?
     

    Showcar Build 6K  1

    1991 Eagle Talon N/T
    9.805 @ 144.00 · 1G DSM
    Loading...
    98 dsm and buddahboost like this.
  24. SasaniFab

    SasaniFab Freelancer

    2,467
    764
    Joined Dec 1, 2013
    danbury, Connecticut
    I opened up the subframe and made a structure internally to stop flexing at the top of the mounts. Then I made a brace that bolts to the control arm mounts which in my case also connects to the bottom of the diff mount.
     

    Street Build 4K  20

    1992 Eagle Talon TSi
    645 whp · 498 lb/ft · 1G DSM
    Loading...
    3 diamonds likes this.
  25. SasaniFab

    SasaniFab Freelancer

    2,467
    764
    Joined Dec 1, 2013
    danbury, Connecticut
    took the car on a long ride, been launching it hard..... so far so good
     

    Street Build 4K  20

    1992 Eagle Talon TSi
    645 whp · 498 lb/ft · 1G DSM
    Loading...

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