jkonquer

Not sure if you are serious or joking?

Solara350

lol you're the only one noticed i was joking hahaha but hey you got a Thank from somebody

Megaman

Any update on this?

jkonquer

It seems that it fits but just pricy $2000 to be exact

LexSense

iTrader: (2)

Ouch...
Well maybe once the RC's end up in more salvage yards we'd be able to grab these for a more reasonable price.

jkonquer

I call dibs, lol i wonder how many of rc owners actually opt'ed for a lsd. Im sure it is very low.

Megaman

Do we have the correct part numbers for the LSD itself? I want to see what my employee discount would be on it through the dealership.

jkonquer

i believe this is it

E46CT

I'd get the diff for the sportier gear ratio alone (I am not sure if it is)

I wouldn't really be concerned about the LSD. These cars are too soft for that.

I imagine though the ratio is the same otherwise the RC350 w/ this option would need different EPA fuel economy #s as surely cruising speeds and acceleration would be different.. could be wrong though. Too lazy to hunt the ratios. can someone find it?

jkonquer

That would be ideal. Problem with lower gear ratio is that it messes up with the transmission logics on automatic vehicles. They had great success on 2IS manual but just not on 3IS, unless you have a tuner than knows how to program the logics. LexSense have done this his vehicle and he is having problems with the transmission shifting at random points.

2013FSport

iTrader: (2)

My research came up with all the same #'s you folks did and I just won an RC350 housing complete with LSD for $300! Yippeeeeeee!

Only concern is words say RC350 RWD F-sport with LSD but the housing is finless like my 2IS.... hopefully it is the 24270 and all is well. Now to find a 4.08:1 donor gear and housing to reduce downtime....
Lucky day to look. PS housing took some abuse and has busted forward mount hence price...

skiracer

Would the Torsen LSD on the 2018 IS 350 RWD work?

2013FSport

iTrader: (2)

Do a where used for #41301-53051 Torsen LSD....
And I was just about to go big $$$ on clutch unit.

jkonquer

Keep us updated 2013FSport. Btw your car is a 3IS, correct?

2013FSport

iTrader: (2)

Negative on that captain...
2IS.... Build and parts are the same tho except the the variance with the actual ratio... I'll leave link here but there will be a tear down and LSD carrier installed in a used 4.083:1 2IS housing. It seems timing is everything but once I get all the parts I'll document it. I've done like 30 gear setups and if I find a good used gear at least I don't have to set the pinion depth in a new case. Just preload and backlash on the LSD carrier swap.

I'll keep you guys...