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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain.


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Old 11-24-2015, 10:19 PM   #71
kodyo
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Originally Posted by mcbrawr View Post
Does anyone have a link to the part # for the pinion bearings?
90366-35087
90366-30067

I believe those are the two for the pinion bearings.
90366-50001 is the one for the axle bearings I'm pretty sure.

I'd double check with a common parts diagram online, but those are the ones I ordered for my IS300 pumpkin, which should theoretically be the same ones in the stock diff.

EDIT

This is where I normally order from (has parts diagram):
http://www.toyotaonlineparts.com/aut...ferential-scat

This diagram is saying 90366-35170 & 90366-30108 in lieu of the above. I strongly suspect they might be identical. But if you are rebuilding an FRS pumpkin and not an IS300 pumpkin, probably not worth risking.
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Old 06-02-2016, 01:47 PM   #72
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Thank you so much for this thread!
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Old 10-19-2016, 04:08 PM   #73
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Thanks for the information!

Would you know the Toyota part number for the 4.875 final drive? Will it fit the standard 2017 carrier?
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Old 10-31-2016, 12:20 AM   #74
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Thanks for the information!

Would you know the Toyota part number for the 4.875 final drive? Will it fit the standard 2017 carrier?
Just use the 4.88 for the Mk3 Supra (1986-1992) from here:
http://weirperformance.com/finaldrivegears.html
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Old 02-10-2017, 03:28 PM   #75
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Most of this talk is about the is300 diff so I want to ask and clarify this .....

I have 2 dedicated drift mk3 supras (both 88s) along with 3 spare diffs. 2 have the lsd and 1 does not. My frs is FI and I want a taller gear. Can I directly swap one of my supra diffs into my frs? Pumpkin for pumpkin?
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Old 03-05-2017, 10:37 AM   #76
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Most of this talk is about the is300 diff so I want to ask and clarify this .....

I have 2 dedicated drift mk3 supras (both 88s) along with 3 spare diffs. 2 have the lsd and 1 does not. My frs is FI and I want a taller gear. Can I directly swap one of my supra diffs into my frs? Pumpkin for pumpkin?
Doubtful, but don't quote me on that. Only Supra part I've heard people use are specific to the ring/pinion gear sets inside the pumpkin.
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Old 04-11-2018, 02:16 AM   #77
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Bit of a necro, but I was watching a Smoking Tire segment where the car being driven was a heavily modified Honda where the final two or three gears were selected from different models of Honda/Acura to improve highway cruising after going with an aggressive final drive.

Has anyone done something similar so that once changing to a 4.56 or 4.88 a non-stock 5th and 6th gear is used so that revs between 60-70 are back at stock or, even better, better than stock? It would be great to be cruising at highway speeds and not hovering around 3K (prior to final drive swap).
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Old 12-14-2018, 12:00 PM   #78
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Resurrecting this thread. Not sure if this has been discussed but it appears we can use Nitro Gears&Axel 29-spline gears with a new flange for more gear ratios.

New Flange (ours is 60x60mm)
https://www.justdifferentials.com/YO...yfitkit-29.htm This also leave the option of using a 66x66 flange for a larger joints.

Gears: 3.90 | 3.73 | 3.58

Last edited by spitsnaugle; 12-14-2018 at 10:57 PM.
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