I have a 1998 impreza w/ the VA type diff, and would like to swap it to the T-style diff. I have hours of searching in, but can't find any real solid info on the VA diffs! Other then uncommon and undesirable lol 

i've never heard of VA and T type diffs?

 

i've heard of open, LSD, VLSD, and inner verses outer stub styles?

How do I post a pic? The VA diff was used on some of the brighton models and unfortunately in my L model. if you google impreza diff you will find a picture of one sitting next to a legacy r-160. They aren't very common. I want to install a VLSD unit from an older legacy SS

Here we go

I see a side by side veiw of a LSD and open diff.

 

It might be a VLSD on the left, that's a new style to me but its definatly and open diff on the right hand side

You are correct, the diff on the left is a vlsd and the one on right is the open VA diff. Here is a pic of the diff cover. It is definitely not an r-160

 

I have a 1998 impreza w/ the VA type diff,

like gary, i have never heard it referred to as as a VA diff.

but that is beside the point.

 

 

for the most part all diffs from ej-engine cars will swap, if the final drive ratio is the same.

so what engine and trans is in your 98 impreza?

and what is the engine, trans, year of the car the diff came from?

 

give me this info and i can probably tell you if the ratios match.

Edited January 9, 201511 yr by johnceggleston

The car Ill be installing it into is my 1998 Impreza L wagon, 2.2 w/ 4eat. Checked build code thru dealer and multiple web postings and found it was 4.11. The diff I got the donor diff from was a 1991 legacy ss, from my findings this vlsd unit only came in 3.90, but I spun it a few times and I kept creeping a hair over 4 turns. So I pulled the cover 37/9 stamped on the gear. It's a version 1 vlsd. I purchased new cover gasket, seals and proper axles (91 legacy)

http://www.ultimatesubaru.org/forum/topic/131197-subaru-rear-diff-code/. If you match the right pinion and rear gear you should be fine.

Here is a picture of the va style diff. Used to save weight I do believe 8lbs lighter!!! That is one extra airbag at no vehicle weight expense!!

They can be swapped, but you must change the axles to match.