LSd?
 

what company or where can i buy LSD for my 72 240z? Do they even make lsd for 240z?

The quick, but very spendy ways:
You can get an assembly to fit in your existing diff housing.
http://www.zcarparts.com/store/merch...ry_Code=PRC02E
But that's kind of expensive ($900 for just the assembly) and you really need to have a good driveline shop set it up.
or the Quaife diff:
http://www.zcarparts.com/store/merch...ry_Code=PRC02D
But that's really expensive ($1900 for the part)
And most of the online z parts folks have the same or similar items.

For less money, a lot of people do the conversion of getting the LSD from a later Z (online or local parts yards) and putting it on their S30, but you'll have to change some parts, potentially driveshaft, mounting pieces, "half-shafts", hubs, etc. depending on your exact setup. Cheaper, but more work. Some folks on here have done that and have very nice setups, hopefully they'll post, too.
Dave

In my opinion, unless your going to race auto-cross, your money will be well spent on other performance upgrades such as ignition, head work, cam, header etc. You can get a R200 differential with 3.9 gear ratio and a five speed from a '81-'82 ZX. Even this is a lot of work but well worth it. Every Z I've ever driven would light both tires in a standing start and bark them in second so no need for the LSD. Buy some nice wide wheels and tires instead you'll need them with the 3.9 gears.

yeah, that's one hell of a setup right there, definitely snappy and does nice burnouts :D

Subaro WRX has R180 short snout LSD diff. Bang it in. Blaze em up.

yeah i was looking at subie LSD diffs, either their r160 or a r180. i know a guy with a turbo swapped z that has a r160 and it's held up for years. think of al the weight you could take off a car by going from a r200 to a r160.

i have ended my subaru diff venture cause i got lucky and found the 300zx turbo LSD

um you want an LSD
 

trust me, if you drive remotely fast, you want an LSD.... I just had one installed in my 3.9 R200, and it was money well spent... I did however wait till everything else was done... 3.0L stroker, suspension, brakes...ect

I have a JDM Nismo R180 2 way limited slip differential with axles.

This item was removed from a 1995 Nissan S14 Silvia with SR20DE manual transmission in Japan.
This differential has approximately 30,000 miles and it is in very good condition.

Applications:
Nissan 240z, Datsun 260, 280, and interchangeable with R160 on the Datsun 510.

Non ABS

Gear Ratio: 4.08

if interested let me know
located soCal