LSD from a Scion FRS into IS250 RWD automatic
08-15-14, 09:05 PM
#94
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Join Date: May 2014
Location: AB
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Well I'm impressed. I got the FRS LSD installed a couple days ago in my MT and it has been a sweet experience so far.
As we all know, the is250 has limited power. But with the LSD I can feel it all being transfer to the pavement when launching. Cornering has been greatly improved. Acceleration in general has gotten a bit better. For some reason the transmission engagement is a bit smoother. (My mechanic thought so as well and we were not exactly sure why)
I was originally worried about the 4.1 gear ratio, but so far I am really digging it. The engine does rev about 200-300 rpm higher when cruising, but hey that just helps me get in to the power band a tiny bit quicker as well.
I did still have a traction control light come on when I really kicked it around a corner at high rpm but it didn't seem to stop me from finishing my turn at full speed.
Any hoo. I'll update more as I continue to push the limits
As we all know, the is250 has limited power. But with the LSD I can feel it all being transfer to the pavement when launching. Cornering has been greatly improved. Acceleration in general has gotten a bit better. For some reason the transmission engagement is a bit smoother. (My mechanic thought so as well and we were not exactly sure why)
I was originally worried about the 4.1 gear ratio, but so far I am really digging it. The engine does rev about 200-300 rpm higher when cruising, but hey that just helps me get in to the power band a tiny bit quicker as well.
I did still have a traction control light come on when I really kicked it around a corner at high rpm but it didn't seem to stop me from finishing my turn at full speed.
Any hoo. I'll update more as I continue to push the limits
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Yodog (10-19-21)
09-04-14, 12:17 PM
#100
^I'd assume there have been some boosted BRZ/FRS owners running a stock Torsen LSD setup. Perhaps so time looking into what #s those folks were putting down would help calm any issues you might have about the LSD holding up. I would agree about the half shafts going out first, especially if you get some nasty wheelhop off of a launch. Luckily when I had my boosted Honda I had a Quaife LSD, so I only had to worry about the shafts. But with lifetime replacement warranties on AutoZone shafts, I never worried too much. 
09-14-16, 04:55 PM
#101
Just scooped my FRS LSD 
stoked this thread came up when looking for an LSD, obviously it's a lot more cost friendly to go with an OEM LSD. All my parts won't be going in until January though, so my car will be completely different (brembo front, new coils, control arms, new wheels / tires, differential and much more).
stoked this thread came up when looking for an LSD, obviously it's a lot more cost friendly to go with an OEM LSD. All my parts won't be going in until January though, so my car will be completely different (brembo front, new coils, control arms, new wheels / tires, differential and much more).
01-07-19, 09:48 PM
#104
Driver School Candidate
Sorry to dig up an old thread,
Do 250's and 350's have a different rear end ?
I'd like to try an 86 LSD into the rear of a 3IS IS350.
Will the complete diff assembly bolt in ?
Thanks.
Do 250's and 350's have a different rear end ?
I'd like to try an 86 LSD into the rear of a 3IS IS350.
Will the complete diff assembly bolt in ?
Thanks.
