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Did Subaru make a R180 Limited Slip Differential?

12K views 10 replies 8 participants last post by  SMACKZ  
#1 ·
I know that Subaru R160 (fits the 510) LSD units were common on turbo AWD Subarus and I also know that the new WRX has an R180 LSD unit. Did Subaru make a R180 for the 1991 to 1994 Turbo AWD Legacy? I've heard they made a 3.9 ratio LSD unit. Has anyone seen one of these?

Someone I know claims they have a 3.7 LSD R190 unit but I think he must have mistaken the R160 for a R190 because as far as I know, only R160s came with the earlier Turbo AWD cars.

Does anyone on the list have a Subaru LSD unit in their Z?
 
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#4 ·
Re: Nope. Hitachi

The "R" series of differentials (R100 through R500) are made by Hitachi and are used by a number of Japanese and European vehicle manufacturers. Subaru was never owned by Nissan. Subaru has always been owned by Fuji Heavy Industries which is larger than Nissan, Toyota, and Honda combined.

http://www.fhi.co.jp/english/index.html

- John
 
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#5 ·
Re: R190 IS CORRECT!

As far as I know, Subaru has always been owned by Fuji Heavy Industries (although GM did recently buy a stake in Subaru), not by Nissan. The differentials, like many automotive parts, were made by an outside source, which in this case I believe was Hitachi, and sold to Nissan and Subaru.

Nigel
'73 240ZT
 
#6 ·
Re: Nope. Hitachi

Fuji heavy industry is the subaru. They just change the name like datsun and nissan I was there in Japan when that happen. My dad had the Loyle turbo GT then. I don't know if Hitachi, which is an electrical company, made the the diffs but Subaru was partially own by Nissan as much as I know. One reason why the WRX was never faster than GT-R.
 
#7 ·
Re: R190 IS CORRECT!

Fuji Heavy industries ownes Subaru. At one point Nissan had a 14% stake in Subaru. Fuji heavy industries makes more then just cars. Nissan only had a stake in the car unit. Nissan sold it back in 98 when Goshn took over. They may have even sold it before that. It is true, that many manufacturers shared common parts. For instance, you will find the Borg Warner t5 in both the Mustang 5.0 and the 280ZX turbo, maybe even a Chevy. Some companies use more suppliers then others. Anyway, that is as close as you can come to the t
 
#9 ·
do they fit??

well aside from all the riffraff about who owns who, do these diffs swap into early zcars easily? anybody done this? sounds like this might be a easier find than the 87 up turbo 300zx's...
Chris
 
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#10 ·
Re: do they fit??

They should if the diff isn't viscous unit and R-180. Might have to use the cover off 240z but I heard it done before somewhere. I would looking into searching 510 websites. They probably know more about R180
 
#11 ·
Re: R190 IS CORRECT!

I pulled a R160 VLSD from an 87' AWD Outback. This unit can also be modified
to fit the Z. I would use the driveshafts from the front of the AWD Outback as cv axles; of course you would need companion flanges or adapters to fit the axle staubs.

These diffs are not as stong as the R180/200. But they are viscous limited slip units that can work well in a stock to slightly modified Z car.

Best of all...it's the lightest of all these Hitachi (R-series) diffs that I have seen fit and work in a 240Z, 510, or Roadster.

If anyone is looking for a diff like this, shoot me an email...Here are pics of the R160 next to my R200 LSD.

http://briefcase.yahoo.com/bc/hijodea/lst?&.dir=/R200LSD+vs+R160LSD&.src=bc&.view=t

SmackZ
 
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