i'm sure this question has been asked many times...

i'm looking for an LSD for my 2001 GS430... i want something that will keep my factory final gearing... i don't want a complete unit swap such as a twin turbo supra complete rear end as that has a different final drive...

what fits?? what other vehicle can i find a rear end with LSD in that has the same final drive that will work??

 

No other toyota/lexus has the same gearing with LSD. You best bet would be the TRD LSD. Its an LSD unit that integrates into your existing differential. You'll want to find a mechanic that knows what he's doing.

Since the TRD is a clutch-type lsd, it requires a special diff. fluid with friction modifier. Its more maintenance than the supra torsen, but at least you get to retain your stock gearing.

 

Go with the 3.76 gearing. It is way better than the factory gearing. The car should have come with the 3.76 LSD from the factory.

 

thanks... sorta sucks to hear that tho...

my brother is a factory trained lexus tech... i think i got installation and fluids covered... and going back 6 months, to the days of my AE86, i know that clutch type diffs require special fluids... i had a cusco RS 1.5 way in my AE86...

why do you think the 3.76 gearing is so much better? your speedo is off by almost 10% too... and how does that effect fuel mileage?? also, what vehicle has a 3.76 final drive?? sorry, my EPC is not handy...

 

the 3.76 gearing is in the automatic supra TT.

it's better because you'll be in the engine's powerband most of the time. That's the biggest advantage, other than the torque multiplication.

I think the speedo has its sensors at the wheel, and not the axle. So you're only changing the reading of the speedo if you change the overall tire size, at least on our cars. Supposedly, the 3.76 decreases your gas mileage by about 2mpg, depending on how hard u drive.

 

hmmms... wheel sensing speedo count... noice... i gotta ask my bro to double check that i guess...

unfortunately, 4th gen supras were pretty rare up here, and the automatic ones were even more rare... *sigh*...

did all the automatic supras have LSD's??

 

All US-spec auto Supra TT's have the Torsen diff standard...

 

Don't you get a check engine when you put any LSD in your car?

 

Actually, standard on 93-96 Supra TT automatics and OPTIONAL on 97-98 models. MANY 97-98 differentials have at one time or another been on the market and they did not have the torsen LSD. I bought one from a 98 and the owner SWORE it was a torsen. He even spun both tires doing burnouts. Unfortunately it was a standard open differential. That both tires spun was surprising but also seen on more than a few older Lexus cars that have open diffs. The reason seems to be as the units age the friction between the spyder gears and the case increases enough to give a semi-lsd effect.

So, before buying a diff from a 97-98 do an actual inspection (remove cover and look) to confirm torsen.

http://www.mkiv.com/specifications/ncf/ncf97/ncf026.jpg

 

nop, it won't affect anything. it's the tc that can give the 430 cel

and it's correct that the lsd will not throw off the speedo. the speed sensors are at the wheels

 

Really, so basically everything will still work on my 430 if I go with an LSD? Even the anti-skid? How is the tire wear with these units on?

 

the vsc system will still work fine. Infact, since you have a better distribution of power (and traction), the VSC will kick in less. Tire wear will not change, unless you decide to do continuous burnouts because they're oh so fun with LSD and rwd

 

Hmm, damn you guys, now I have another item I need to buy.

 

so TRD is teh way to go... okay... thanks guys...

is the TRD diff very clunky in these cars, or are they pretty gentle??

 

OK, I agree traction control will work better, but what about the stability control part if it? If you swing the back end out, how can it just apply one rear brake with a LSD? That is how it takes the car out of the slide and corrects the slide?

I tested this part of VSC last winter, I put he car in a huge power slide and then turned on the VCS, it immediately swung the car back in line, so quickly that I wasn't ready and really had to really spin the wheel to keep me going strait down the street.

Has anyone tested or worried about this part with an LSD installed?