LSD from a Scion FRS into IS250 RWD automatic

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03-28-14, 01:35 PM

#76

Jeff Lange

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That's a Supra clutch LSD, not an IS300 LSD.

Jeff

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03-28-14, 06:10 PM

#77

Gville350

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^Oops, didn't read the entire listing there. LOL!

Will that thing work in an IS250 though? If not the housing, will the LSD in the 250 diff?

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03-28-14, 10:27 PM

#78

Jeff Lange

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The LSD will fit in an IS250 housing. The Supra housing won't fit the IS250.

Jeff

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04-05-14, 09:24 AM

#79

DarthLex

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Ok so my question is are you using the FRS/BRZ pumpkin or just the LSD? Would that matter at all. Also the ones who have add the LSD do you have any other suspension mods?

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04-05-14, 11:36 AM

#80

Jeff Lange

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You can use the entire assembly or just the LSD, either way would work fine.

Swapping the entire thing gives you 4.10:1 gearing.

Jeff

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04-05-14, 06:16 PM

#81

DarthLex

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Quote:

Originally Posted by Jeff Lange

You can use the entire assembly or just the LSD, either way would work fine.

Swapping the entire thing gives you 4.10:1 gearing.

Jeff

Thanks for the info will have to see if I can find something in Texas.

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07-28-14, 07:46 AM

#82

Shanksmoon

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I would assume that the rear Diff pumpkin from an FRS MT. Will also fit in a is250 MT

Can someone confirm I am about to make a purchase.

Thank you

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07-28-14, 08:20 AM

#83

Jeff Lange

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Yes.

Jeff

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07-28-14, 08:34 AM

#84

Shanksmoon

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Thanks Jeff,

I appreciate the super quick reply. I will let you guys know how the upgrade goes. I am going to try out the 4.10 gear ratio for a while but I will keep my old diff if I want to go back to 3.9

Cheers,
Eric

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07-28-14, 10:30 AM

#85

Jeff Lange

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If you have an MT, your original diff would have been 3.73, only the AT uses 3.91.

Jeff

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08-03-14, 11:38 AM

#86

JETLEX

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Finished swapping in a 2013 BRZ rear differential into my 2007 IS250 this weekend - axles slide in just fine.
I pulled the diff cover, inspected & cleaned everything, then filled it with Motul Gear 300 75w90 once in place.

Pulling the axles is easy with an SST type tool as shown in the repair manual - it is OTC tool # 6541 / 519375 - can be used with regular slide hammer.

Thank you to Mike @FIGS, as well as Jeff Lange for all their help!

Haven't had a chance to drive it too much yet, but so far my impressions are that it is a little more planted in the corners.

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