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


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Old 03-29-2016, 11:55 AM   #1
sixthree
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Final Drive Part Specs

Hello,

Just wondering if anyone knows what size/specs final drive we need for the brz/frs. Alot of people recommend Mfactory, cusco and weir performance for final drives, but does anyone know of any other reputable company?

I've tried emailing Weir but they haven't answered back in weeks and don't want to spend $800+ with mfactory/cusco since both don't offer 4.88s. I've noticed a few on ebay that are made for "toyota" 4runners/etc. Will these fit??

Thanks
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Old 03-29-2016, 11:58 AM   #2
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Eager to know about this one. Also if there's someone in the GTA who would be able to install this
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Old 03-29-2016, 12:25 PM   #3
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Supposedly you can swap an Lexus IS300 differential over which will give you either a 3.7 or 3.5 final drive, but that would only be good if you're pushing more HP than stock with a turbo or supercharger.
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Old 03-29-2016, 12:29 PM   #4
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Try calling Weir, they are busy guys
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Old 03-29-2016, 01:27 PM   #5
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Which weir final drive did you guys get??? or do they not list the BRZ/FRS ones on their website?

http://www.weirperformance.com/finaldrivegears.html
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Old 03-29-2016, 02:38 PM   #6
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Eager to know about this one. Also if there's someone in the GTA who would be able to install this
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Which weir final drive did you guys get??? or do they not list the BRZ/FRS ones on their website?

http://www.weirperformance.com/finaldrivegears.html
Am I smelling a possible group buy/group install haha
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Old 03-29-2016, 02:51 PM   #7
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Am I smelling a possible group buy/group install haha
You just put stars in my eyes
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Old 03-29-2016, 03:10 PM   #8
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Yes, call wier.


I just finished my 4.56.

The brz is not listed, but uses the same parts as a mark3 supra. IIRC.
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Old 03-29-2016, 04:23 PM   #9
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I'll join group buy, but we probably need like at least 10 people for any discount. :p
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Old 03-29-2016, 04:30 PM   #10
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Yes, call wier.


I just finished my 4.56.

The brz is not listed, but uses the same parts as a mark3 supra. IIRC.
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Which weir final drive did you guys get??? or do they not list the BRZ/FRS ones on their website?

http://www.weirperformance.com/finaldrivegears.html
Quote:
Originally Posted by sixthree View Post
Hello,

Just wondering if anyone knows what size/specs final drive we need for the brz/frs. Alot of people recommend Mfactory, cusco and weir performance for final drives, but does anyone know of any other reputable company?

I've tried emailing Weir but they haven't answered back in weeks and don't want to spend $800+ with mfactory/cusco since both don't offer 4.88s. I've noticed a few on ebay that are made for "toyota" 4runners/etc. Will these fit??

Thanks

Weir is the best quality and most affordable on the market you're going to want to call them and ask for this:




But tell them it's going to be installed into a BRZ/FRS rear differential. You're staying N/A and have an auto I here the 4.88 is a really good choice, if your Manual N/A or auto supercharged go 4.56
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Old 03-29-2016, 05:29 PM   #11
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Eager to know about this one. Also if there's someone in the GTA who would be able to install this
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Originally Posted by Mr.Impreza View Post
Am I smelling a possible group buy/group install haha
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I'll join group buy, but we probably need like at least 10 people for any discount. :p
So umm, does any of you have a telephone line that can call long distance to the states?!?! If no groupbuy, maybe we can save on shipping?!!?
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Old 03-29-2016, 05:32 PM   #12
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In for group buy on a 4.88 FD gear set
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This thread got de-railed quick now it's just about Penis guitars
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Old 03-29-2016, 06:28 PM   #13
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sorry to thread hijack guy but I'd do a 4.88 group buy as well
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Old 03-29-2016, 06:49 PM   #14
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I am doing 4.556. I got it from Toyota NZ and couldn't be any happier. Some of the MK3 Supra bearing fit in no problems. I think Spencer fabrication has a diff upgrade program. Spencer fella is a bundle of knowledge too!
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