Hey I bought an sc300 and have been doing a budget street drift build, the car is a none turbo build, and even if i end up tuning it will never go above 450HP because I don't need any more then that and im not trying to act like i could even handle it anytime soon. anyway, the person i bought it from pretty much did the cheapest 5-speed conversion you can unfortunately so i have been fixing and doing everything the other owner didnt first was a speed sensor fixing the turn signal stocks, some interior things, and even getting a shift boot from z30 industries real nice piece. Did the whole brake system keeping it stock except for drilled and slotted rotors because ik big brake kits are cool but I'm 19 and honestly again I don't need it. I have enough to actually buy one of the more expensive things an lsd though i cant spend 1000 dollars. So I'm here asking the wizards about it. I have read that i can use one out of the tt auto supra but those i canot find and honestly idk if i can afford those either so if i need to save up a bit more that's fine tough I would love too get yalls input



sorry i didnt post this in the right spot i forgot again ;0

 

The short answer to your question is that there isn't a cheap LSD available for our vehicles. Not unless you happen to get very lucky and find an incredible deal on one.

Torsens:
Toyota 200mm Torsens (T-1 and the rarer T-2) are great for NA cars and turbo cars below 500whp or so. Mind you people get a lot of use from them with powerful turbo JZ cars. The rare T-2 is a stronger design still in use today on new Toyotas but good luck finding one.

Torsens are constantly biasing the torque and are generally considered 1.5-way LSDs. The only other 1.5-way available for SC's is made by OS Giken. It's fantastic and possibly the best of all the available LSDs but far from inexpensive and they take their own special differential gear oil.

The same Torsen T-1 200mm LSD with a 3.76 ratio was also available in JDM Aristo's (Japan's GS300) that had a factory 2JZ-GTE engine and in Toyota Soarers both with manual and auto transmissions (standard on manual Soarers, optional on most automatic Soarers). Later model Soarers got the T-2 Torsen LSDs as did later model JDM Supras and probably later model JDM Aristos but it's still very, very, very rare to find a T-2 LSD made for our rear end housings. Try eBay U.S. and Australia for potential listings of those.

Also... 93-98 USDM Supra NA's (as well as 1993-2002 JDM Supra NA's) did have the option of getting the Torsen LSD as well. For model years 1993-1996 this was a very rare special order option and the final drive ratio was 4.272:1. For model years 1997-1998 Toyota made the Torsen LSD standard equipment on Supra NA's and the final drive ratio was 4.083:1.

A note about buying a used Torsen: Since these LSDs act like open differentials until they have engine load on them the rule of thumb is that the seller needs to open up the rear diff case cover to show that the housing really does have a Torsen T-1 or T-2 inside it. For some model years of the MKIV Supra TT Automatic the LSD was actually optional and this is why any sale needs to show the picture of the Torsen inside at minimum or confirm it on local pickup if you will not be dealing with freight shipping.

...

Everything Else:
All the other LSDs available are 2-way (they lock up on both acceleration and deceleration) and all clutch-pack type. Their particular traits and quirks vary from manufacturer and model.

Generally they are: the discontinued (but serviceable if you find a used one) TRD 2-way LSD for the MKIV Supra, a 2-way LSD by Kaaz, a couple of Cusco 2-way LSDs, a Tomei Trax Advance 2-way LSD, the OS Giken 1.5-Way and 2-Way LSDs... and... I think that's it for the 200mm size diffs that we have.

All of these 2-way LSDs are going to be $1,000 or more brand new. OS Giken LSDs are around $1,600 new. And then you'll need a good driveline shop to install it for you with the diff bearing rebuild kit that Driftmotion sells. Additionally any diff rebuild for our cars especially if it involves a new differential that has never been in there before will require OEM shims in the specific thickness the rebuilder determines need to be ordered from Toyota before finishing the process. So factor in the extra cost of the diff rebuild kit plus whatever shims need to be ordered and finally labor.

...

I wish there were a cheap option to tell you of but these are what you'll have to choose from to get an LSD in your SC.

There was a Russian-made clone LSD of a Quaife (I think) that was supposed to fit the 200mm SC/Supra/GS housing and someone demonstrated putting it together in a thread but they never followed up with how well it actually worked and what its quality and long term behavior was. I'm only mentioning it for completeness. It is not a proven and recommended option as yet if it ever even will be.

 

I'm running the KAAZ 2-way clutch type LSD in my SC300 and have nothing but good things to say about the product and customer service I've received.


You can, of course, weld it as well. However, I've done this to more than one car and it's guaranteed that you'll blow the diff, wheel bearings, etc at some point. I'd take my KAAZ all day over doing that again.

 

thanks kahn again helping me i really appriciate it im gonna go ahead and just save up some more then i have 800 so it wont be that long thanks for the amazing write up. PS i ended up figuring out why the high beams where always on the headlight stock stick was broke in the open position making the highbeams always on i got a new stock asembly for 60 buks a steal and swapped it works all day thanks for the amazing write up.

 

thanks for the suggestion i was looking at the kaaz it seems to be the cheapest option of the 2 way difs, how was the installation like?

 

Hey Chase - install wasn't too bad. I pulled the diff myself and took it and the LSD to a local gear/axle shop to install (I want to say that I paid $150-$200). They checked all the clearances, bearings, etc while they were in there. They said install was super straight forward and no other work was needed. My stock diff has over 150k miles and they said it looked damn near new!

 

I went with the OS giken lsd and i love it. The cheapest option is the weld the spider gears in the diff lol.

 

scsexy, if I ever replace my Torsen T-1 1.5-Way that's the one I'm going to get. Did you order yours in 1.5 or 2-Way? Are there any outstanding quirks with it that you've noticed other than its requirement for the special OS Giken oil? Pretty easy to live with day to day?

 

Good plan. You won't regret doing it right no matter which LSD you end up going with. The only downside is the upfront expense of it. You'll have to weigh for yourself whether or not you want to do what I did and rebuild with a short gear ratio to use with your NA 2JZ engine or just go right ahead with a longer gear ratio that will be more ideally matched later on down the road when you have a turbo engine built. My decision was to do both and thus rebuild twice in ten years

Good job finding the source of your headlight issue! I don't think many people suspect the headlight stalk switch but as rare as that failure is it can wear out mechanically depending on how much use it has seen since the 90's.

 

Thanks for the write up for less then 300 bucks definitely worth it to just take it to someone else gaga I can get the diff out but **** messing with the clearance and other **** hahah

 

Thanks Kahn I really appreciate the support from you during the whole build I know this sounds kinda wierd but I really appreciate your help and everything most people wouldn't consistently respond to all these posts your a better man then me also I have a welded diff right now but Its really hard to drive in parking lots and **** so that's why I'm going with the lsd before any trans **** that cane come later same with turbo ****.

 

That's what I have now hahahah it ****ing sucks corners are scary as hell and parking lots and parking in any case kinda sucks so I'm looking for a 1.5 way lsd so I can take it drifting and street it well too it's not only my drift car but also the car I go driving with when I'm with my friends so everyone makes fun of my diff😅😅😅

 

No problem, glad to help! I asked many questions myself in many threads long before I ever bought an SC. You can't get a project right unless you research and ask about what you don't know.

I wasn't aware you had a welded diff in your car. If that's the work of the previous owner who drifted the car a lot then there's no telling how much abuse it has been through. It might be a good idea to decide on the gear ratio you want and just buy a whole used pumpkin for your future LSD rebuild be it a 4.27, 4.08, 3.92, 3.76 or 3.26 (or early LS400 3.615 but that's the ring and pinion set only, not the LS400 diff casing).

I also prefer a 1.5-Way since I have yet to take my car to any competition event and use it on the street only and sometimes on long distance trips. The Torsen T-1 is very old technology but it's good for my mild 340hp (crank) and before that the NA power output. I'd love to get a 200mm T-2 but they're as rare as a unicorn.

The Torsen T-1's (and maybe T-2's?) do need to be used with care and respect on rainy days though especially depending on the type of tires you use but this also comes with the territory own owning any car with a limited slip and no traction control.

The OS Giken 1.5 Way is preferred by MKIV Supra owners who road race and/or go to circuit racetracks but it's supposed to be very streetable too. A year ago I installed an OS Giken twin plate clutch and I have been very impressed with the quality of their products. However with their LSDs just know that you have to use their particular brand gear oil. There is one alternative oil they also list for their LSD but the optimum oil is still the type they sell for all the LSDs they make. I'd like to have more of scsexy's impressions of his OS diff.

Regarding 2-Way diffs... they're all slightly different in character but Rudy has had good things to say about his Kaaz 2-Way and I know that Gerry (Gerrb) can attest to the quality of the TRD 2-Way diffs he has in several of his SC's (most of them making 900-1,000whp or more. In some cases much more) a couple of which he drives around in every day.

The Torsen is the easiest to maintain and the least obtrusive of the bunch but it has ultimate power limitations in the T-1 type and it's not as predictable once you're at 500whp or so. Builds with a lot of power is the other main reason why people go with aftermarket LSDs: clutch style 2-Way types and the 2-Way and 1.5-Way OS Giken are more predictable and durable with big power. Torsens also are not very good drag racing LSDs.

Ultimately which one is best for you also comes down to preference and driving style but an affordable deal on any LSD, even a clutch pack type that needs a refresh before being installed, also stands out.