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1G 3000gt vr4 rear diff swap progress

SasaniFab

Proven Member
2,440
790
Dec 1, 2013
Mexico, 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.
 

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bastarddsm

Proven Member
5,416
1,252
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.
 

SasaniFab

Proven Member
2,440
790
Dec 1, 2013
Mexico, Connecticut
You have to be very careful how you mount that diff, or you will break the rear cover if you have any power.
I will be reinforcing the crap out of the subframe and mounts...

The mounts will be 1/4 inch plate , I know there are a lot of forcing being applied that I need to account for
 

SasaniFab

Proven Member
2,440
790
Dec 1, 2013
Mexico, 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..
 

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SasaniFab

Proven Member
2,440
790
Dec 1, 2013
Mexico, Connecticut
Diff is installed and mustache bar is 90% completed. Almost ready for testing
 

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bastarddsm

Proven Member
5,416
1,252
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.
 

bastarddsm

Proven Member
5,416
1,252
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.
 

SasaniFab

Proven Member
2,440
790
Dec 1, 2013
Mexico, 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.

I was thinking of doing something like this with the diff cover to add some structural integrity
 

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SasaniFab

Proven Member
2,440
790
Dec 1, 2013
Mexico, Connecticut
This looks like a catastrophe waiting to happen. The mustache bar looks good but I would not trust those side supports.
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
 

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SasaniFab

Proven Member
2,440
790
Dec 1, 2013
Mexico, Connecticut
I decided to tie the mounts internally, by the time I’m
Done it will be 10x stronger than Oem

Cont
 

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SasaniFab

Proven Member
2,440
790
Dec 1, 2013
Mexico, Connecticut
Ready for business
 

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