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Success: Installed an IS300 Torsen LSD in my IS250

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Old 03-31-14, 02:19 PM   #91
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Originally Posted by FSportIS View Post
Wow this seems like an expensive mod... I wish I can test drive the IS with this mod to see how fun it is lol. Anyone in Southern CA have this mod done?

2012IS250 which mountain drive do you drive on?
I think it is haha. if you have a shop do it, you're looking at spending about 900-1k at least if you purchase a new differential and have a shop do it, but it's worth what you get out of driving with it. I drive on highway 9 and 35/skyline boulevard, right next to the Santa Cruz mountains. I want to bring my IS down to SoCal and try GMR though haha.
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Old 04-25-14, 06:06 PM   #92
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If you AWD guys want to get a little crazy, I suspect the rear Torsen diff from an RX 300 could possibly fit in the front diff. The rear open differential carrier on RX300/330/350 is the same part number as the front carrier on many of the Lexus IS cars. Believe it or not, the RX 300 was available with Torsen out back. There are many "ifs" here, including carrier bearings and CV stub shaft compatibility.
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Old 04-25-14, 06:27 PM   #93
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That torsen uses larger axle stubs than the open diff, so you'd probably need some custom/magic axles or something to make that work.

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Old 04-25-14, 09:11 PM   #94
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Just looked it up, the fiche lists the same stub axle part number for both open and LSD on the RX300. This does seem a bit weird... would you happen to have any further info?
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Old 04-25-14, 11:40 PM   #95
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No it doesn't.

41309-20020 - 99-00 Non-LSD Stub
41309-20030 - 99-00 LSD Stub
41309-32020 - 01+ Non-LSD Stub

LSD wasn't offered on the RX300 after 2000.

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Old 04-26-14, 05:26 AM   #96
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Yes, you are correct, just found that mistake on my part... that's why I thought it was weird. Thanks for clarifying.
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Old 04-26-14, 05:26 AM
 
 
 
 
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axle, diff, difference, differential, feel, install, is250, is300, lsd, m98, pics, pion, rack, removal, torsen

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