Calorus Posted March 28, 2011 Share Posted March 28, 2011 I've done a search but come up blank, I'm looking either for a straight swap Torsen LSD for a '93 Manual SZ, or alternatively for some info on the presumably far more expensive aftermarket doobries? Does anyboy know what fits from the Supra/Toyota family or what's good from the tuning catalogues? Many thanks! Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted March 28, 2011 Share Posted March 28, 2011 The best aftermarket LSD is the OS Giken unit. They do them for all types of MKIV diff cases. The TRD one is probably the best of the cheaper units. The OE type Torsen is pretty useless o be frank. http://www.osgiken.net/products/superlock.html http://www.osgiken.net/testimony.html A lot of serious race cars are now using them. I found my RWD Skyline transformed by one. I was reluctant to spend the money, but it turned out to be one of the very best things I have done in years Quote Link to comment Share on other sites More sharing options...
Little Matt Posted March 28, 2011 Share Posted March 28, 2011 Toyota have only used three or four different types of diff for the RWD family, as a rule. Kaaz do very good diffs, I've used a Kaaz and a Tomei diff in the past, both 2 way, and I felt the Kaaz was a much more noticeable diff and thus more predictable. I don't know how much the OS Giken ones are, they look good from what I've heard but the Kaaz ones are in the UK and available for about £650.00. They have a superb aftercare support and all the spare parts to repair the diff if in time it has a part fail on it. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted March 28, 2011 Share Posted March 28, 2011 Why would you fit a two way diff to a track car? Just creates corner entry understeer. Quote Link to comment Share on other sites More sharing options...
Nic Posted March 28, 2011 Share Posted March 28, 2011 This is the part number to fit your diff. 41301-JS402 TRD LSD Quote Link to comment Share on other sites More sharing options...
Briggsy Posted March 30, 2011 Share Posted March 30, 2011 Why would you fit a two way diff to a track car? Just creates corner entry understeer. Only thing I can think of is the car is used for drift.....sorry for the hi Jack am I right in thinking the early 6 speed diff has the strongest casing ...or which one would you recommend chris,the supra I am building will be used mainly for competition drift and fitted with kazz 2way ,I think they are available for all diff casing types Thanks mark Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted March 30, 2011 Share Posted March 30, 2011 Early manual six speed diffs had a bigger CWP and are strongest. Quote Link to comment Share on other sites More sharing options...
Nic Posted March 30, 2011 Share Posted March 30, 2011 The Supra was fitted with 2 different diff casings, left is an early model 6spd TT diff (B), right is the smaller diff (A) used on ALL other Supra models, including the facelift 6spd TT. As Chris says the larger diff is the stronger of the 2, TRD and others make LSD's to fit both. http://img210.imageshack.us/img210/2994/supravsoarerex8.jpg Quote Link to comment Share on other sites More sharing options...
TTRickeh Posted March 30, 2011 Share Posted March 30, 2011 If you have the 5 speed gearbox you should currently have a 4.083 final drive ratio, if you swap to a J-Spec TT6 LSD you will end up with a 3.266 final drive ratio meaning you're acceleration will be much slower. If you're not planning on doing a turbo conversion i'd go with the auto TT LSD which is 3.76 final drive. If you are 6 speed (SZ-R?) then the auto TT final drive ratio should be the same as your current one. These are your options without opening up any diffs. Info taken from Homer's diff calculator. Quote Link to comment Share on other sites More sharing options...
Calorus Posted March 31, 2011 Author Share Posted March 31, 2011 Hell of a lot of info there guys, cheers. I reckon I'm going to have a short term and a long term plan: find an Auto TT Diff* ASAP, and start a kitty for a either the Kaaz or OS Giken range. Thinking back to my MkIII I remember the LSD being 'soft' but sufficiently strict for playtime. But I'd really like to build this car right, in the longer term. Cheers! *P.S. Can I presume from the above that the NA 5speed LSD will be 4.083, too? Quote Link to comment Share on other sites More sharing options...
pedrosixfour Posted March 31, 2011 Share Posted March 31, 2011 *P.S. Can I presume from the above that the NA 5speed LSD will be 4.083, too? Yes. The final option open to you is a USDM NA 5 speed diff which has a 4.273 final ratio. I have one of these in my track car but may not suit your needs. Quote Link to comment Share on other sites More sharing options...
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