180sx or J30 VLSD???

[maxpsistop]

If you guys with an sr20det swap in your early model 240sx had the opportunity to get a 180sx vlsd, would you go with the 180sx LSD or would you consider doing the J30 diff swap, thanks

[AZ89two4Tsx]

Depends on how much power I was putting down and the application.

The j30 diff is geared slightly lower. That's good if you have enough power to overcome the sluggishness (minimal), and it's also better for highway driving because you'll be at a lower rpm. But if you don't care about that or are just concerned with acceleration, get something with the same or higher gear ratio.

[lilpiton]

what is the J30? IDK and would wanna know...

[AZ89two4Tsx]

The J30 differential is a differential that came out of an Infiniti J30....

Btw, only certain years bolt right up. The older models (pre 95), you have to swap the axles. Not really a big deal though.

Here's a link for you noobs. http://www.ka24development.com/vlsd.html

[hbpignosePA]

if your goin viscous id do whichever is cheaper...

could u just swap the ring gear on the j30 diff for the s13 one? or arent they interchangable?

any rate id go with the cheaper that you can find

[lilpiton]

The J30 differential is a differential that came out of an Infiniti J30....

Btw, only certain years bolt right up. The older models (pre 95), you have to swap the axles. Not really a big deal though.

Here's a link for you noobs. http://www.ka24development.com/vlsd.html

Ok cool thanks. not gonna do that just wanted to know what it came from. i got an s15 lsd layin around my room and thinking of putting it in my self by dont know if i should do it or just take the pumpkin off and give it the a shop...

[hbpignosePA]

im installin one now... doesnt seem terribly difficult.

ill have it in tommorow

[rob912]

it really all depends on what your looking for performance wise...

[SirSilvia]

I got a setup in the way that is a 300zx LSD Diff with J30 axles. I was told the gear ratio is close to the stock 240 diff. The bolt patterns on the output shafts and the 240 axles are different, and the 300zx axles are too long for the 240. Thus the reason for the J30 axles. The 300zx diff will not bolt right up to the 240 subframe BUT the stock diff cover fits the 300zx diff. I can't wait to get it

[OutToWinPAHC]

if your goin viscous id do whichever is cheaper...

could u just swap the ring gear on the j30 diff for the s13 one? or arent they interchangeable?

any rate id go with the cheaper that you can find

Hmm I dunno the J30is a 13 tooth Pinion I think while the S-Chassis is a 12 tooth Pinion.

Difference is 3.92 t0 4.08 its not a whole lot.

[hbpignosePA]

well at any rate the final drive isnt that much off, so basically whichever casing you can get for less

its viscous, its gonna wear out anyways