IS350 LSD options
#1
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IS350 LSD options
So I have a 2016 is350 f sport RWD. I love the car but I want it to have more power. I'm not a big fan of the RCF and oh how I wish there was a 3IS ISF available. Until then... I'll stick with what I have.
Im mulling over the thought of doing a big build; coilovers, sway bars, wheels, tires, and.... the rr racing supercharger which needs to come out asap! All of this would make my IS awesome, but I don't have an LSD to hold the added power and grip. I've been combing through threads on here for a while now and cannot find the answers I'm looking for.
Will the ISF rear differential assembly work on my car? I've read conflicting answers on this. I guess I could use a technical answer. It seems OS Giken has an option, but I really like the Torsen assembly better due to the OEM reliability and I feel like it fits my application better. This will be a daily driver, everyday, fun car that will rarely, if ever, see the track. Please don't give me reasons why I should not do this or tell me I'm wasting money. Technical answers are what I'm looking for. Spending money on a supercharger kit will really depend on if an LSD is a real option I can have.
I have read that the rc350 has an optional LSD. Would this be a better option over the ISF pumpkin?
Thanks in advance for the help.
Im mulling over the thought of doing a big build; coilovers, sway bars, wheels, tires, and.... the rr racing supercharger which needs to come out asap! All of this would make my IS awesome, but I don't have an LSD to hold the added power and grip. I've been combing through threads on here for a while now and cannot find the answers I'm looking for.
Will the ISF rear differential assembly work on my car? I've read conflicting answers on this. I guess I could use a technical answer. It seems OS Giken has an option, but I really like the Torsen assembly better due to the OEM reliability and I feel like it fits my application better. This will be a daily driver, everyday, fun car that will rarely, if ever, see the track. Please don't give me reasons why I should not do this or tell me I'm wasting money. Technical answers are what I'm looking for. Spending money on a supercharger kit will really depend on if an LSD is a real option I can have.
I have read that the rc350 has an optional LSD. Would this be a better option over the ISF pumpkin?
Thanks in advance for the help.
#2
I started this thread while back
https://www.clublexus.com/forums/is-...rom-rc350.html
So it just comes down to $.
RC350 and RCF currently has a Torsen LSD option, but you are looking at around $2000 for the parts alone. I believe OS Gaiken also makes one for ISF, the RCF and 3IS should come anytime soon. Theoretically, these parts should swap out without an issue.
https://www.clublexus.com/forums/is-...rom-rc350.html
So it just comes down to $.
RC350 and RCF currently has a Torsen LSD option, but you are looking at around $2000 for the parts alone. I believe OS Gaiken also makes one for ISF, the RCF and 3IS should come anytime soon. Theoretically, these parts should swap out without an issue.
#6
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2is is350 with 4.083 final drive differential should fit. I'm not entirely sure how my shop got the whole pumpkin to fit, but it does fit.
I know the ISF peeps have swapped in a 2is is350 4.083 final drive pumpkin into their ISF which fits and bolts on if I remember correctly.
So in theory with that logic, ISF differential should fit the 3is as well, but I can't confirm that info.
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Interesting. You don't have any problems with the shift points? The trans will be fine in automatic? Shorter gears would be great but I don't think I can find an lsd with a tighter ratio. Isf and rcf have taller gearing and I would imagine the rc350 lsd would be the same gearing as is350
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