3:90 R-180

[craZee]

Looking for an R-180 with 3:90 gears. Will consider open, LSD or perhaps just good 3:90 R/P gear set.

 

Please send any options to stevepharr at cox.net

 

Thanks

 

Steve

 

San Diego

[datzenmike]

I don't think there were any R-180 with 3.90 ratio. All 3.90s were R-200 for the Z car.

 

The early 810 sedans had an R-180 with a 3.70 ratio.

 

The '83.5-'86.5 720 4x4 had an R-180 diff with 4.11 ratio.

 

The S12 had R-200 with 3.90 and 4.11 and also R-180s with 4.11 ratio

 

The 300zx did have some R-200s with 3.70 ratios.

[craZee]

Maybe the fact that they "never made them" explains why they are hard to find LOL. There is a Subie one on CL with no stub axles. Do the subbies use the spring keeper and the Nissan's the bolt in the center? I ran into this nightmare before.

 

Thanks for the education on this. I have a 4:11 and 4:35 180's but a 3:90 would be better for one track I run. I hate to add the extra weight of the R-200.

 

Steve

[datzenmike]

Maybe the fact that they "never made them" explains why they are hard to find LOL.

 

Well didn't mean to imply they never made them. I don't know of any/don't think there are any.

 

The R-200s are very bulletproof and yes they are heavy but 20 pounds more than an R-180? Would seem more if swapping from an R-150 in a 510. Good for traction.

[Ratty260z]

They made the 3.90 r-180 open diff just not in the US. 240z's in other countries had 5 speed tranny's and the 3.90 r-180 stock.

 

A R-160 LSD could be an option.

[datzenmike]

That would be the old Roadster 5 speed with a L series bell???

[banzai510(hainz)]

Me and Jeff did a R180 C clip to 510 half shaft conversion swapping spider gear threaded sideplate

I think it was from a S12 automatic

 

it was either a 390 or 3.70

[Topher88]

i have an r200 3.9 possibly for sale if you are interested.

[sbZ]

Maybe the fact that they "never made them" explains why they are hard to find LOL. There is a Subie one on CL with no stub axles. Do the subbies use the spring keeper and the Nissan's the bolt in the center? I ran into this nightmare before.

 

Thanks for the education on this. I have a 4:11 and 4:35 180's but a 3:90 would be better for one track I run. I hate to add the extra weight of the R-200.

 

Steve

 

4.35 r180? What did that come in? Or is that a typo?

[zerow]

There are R-160s (3.70s and 3.90s) all over the place in Subarus...mostly open, but you never know - an LSD does show up every now and again...

 

73 610s with automatic also had R-160 and 3.90, but that is a long shot.

 

Your best bet is like what was stated above - R-200 and 3.90s. Thats damn near bulletproof.

[craZee]

I have decided to go with taller tires to get close to the same ratio that the diff swap would have given me.

 

Anybody have any cheap 16 x 7 0 offset 4 x 114.3 rims for sale? Style not important.

 

Steve