Robbing parts of 2011 ISF
07-14-11, 08:52 PM
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Robbing parts of 2011 ISF
Ok, its known for a new ISF to lap Fuji in 2 seconds faster than a previous model. So the question is what parts are interchangeable to make an older model handle better? If you guys know what are exact changes and possibly part numbers then post it up here and I will compile it all in this post. Thanks!
So far I did some research and it turns out that shocks have the same part number according to local lexus dealer so no changes there.
Sway bar is allegedly thicker on the back and could be a better alternative to the F sport they make for the 250/350 cars.
Bracing? not sure what is changed in that department.
* "Torsen" OEM limited Slip differential p/n: (41110-53290)
* Stiffer rear subframe bushings p/n: (52271-53041, 52277-53050, 52278-53031)
So far I did some research and it turns out that shocks have the same part number according to local lexus dealer so no changes there.
Sway bar is allegedly thicker on the back and could be a better alternative to the F sport they make for the 250/350 cars.
Bracing? not sure what is changed in that department.
* "Torsen" OEM limited Slip differential p/n: (41110-53290)
* Stiffer rear subframe bushings p/n: (52271-53041, 52277-53050, 52278-53031)
Last edited by Bpower; 07-17-11 at 08:04 AM.
07-16-11, 04:57 AM
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07-16-11, 11:02 PM
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this has been discussed a few times in the past, but never really took off probably because it's not a cost effective way to improve the car. According to some car mags, the control arms are different and the suspension geometry is different. if the shocks are the same, then the spring rate are probably slightly softer in the '11's. the power steering was also tuned differently in the '11's, probably just a new ECU.
The cost of an older model to the new OEM suspension is probably going to be expensive and not cost effective. a good set of coilovers probably can give you great result at much lower cost. it probably would be a good idea to upgrade to the new sway bars though.
The cost of an older model to the new OEM suspension is probably going to be expensive and not cost effective. a good set of coilovers probably can give you great result at much lower cost. it probably would be a good idea to upgrade to the new sway bars though.
07-17-11, 12:02 AM
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Start here. You'll also need to add the rear differential (41110-53290), and the rear subframe to chassis bushings (52271-53041, 52277-53050, 52278-53031). Everything else appears to be unchanged. There is a part number update for the rear suspension subframe, but this covers all 2IS and 3GS models. It's not unique to the IS-F at all. The new part number is 51206-30101, the old part number is 51206-30100.
Last edited by lobuxracer; 07-17-11 at 12:19 AM.
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07-17-11, 07:59 AM
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Start here. You'll also need to add the rear differential (41110-53290), and the rear subframe to chassis bushings (52271-53041, 52277-53050, 52278-53031). Everything else appears to be unchanged. There is a part number update for the rear suspension subframe, but this covers all 2IS and 3GS models. It's not unique to the IS-F at all. The new part number is 51206-30101, the old part number is 51206-30100.
Last edited by Bpower; 07-17-11 at 08:18 AM.
07-17-11, 09:42 PM
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I have no evidence the sway bars are different from the parts lists I've seen.
08-02-11, 09:40 AM
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08-02-11, 09:42 AM
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If it's just shocks and springs, you're missing a lot. I'm pretty sure someone selling the OEM shocks and springs wouldn't be too hard to find since so many want to lower their cars, but getting the rest of it will require a junkyard donor or a pretty hefty pile of cash.
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