Who has had to change their pinion bearings with final drive mod?? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

kev60625 · 06-02-2016, 02:54 PM

Hello,

I am trying to change my final drive gear to a 4.556 and am wondering who has had to change their pinion bearings? I see it can be re-used and wondering if I should just go that route. My car is a 2013 with 24k miles if that matters, Thanks!

The price difference with getting the pinion bearing is huge, it would add $120 to the total

Icecreamtruk · 06-02-2016, 03:43 PM

Well, I can see we dont have the same idea of what huge means (120 huge? really?). I had to get mine changed for a 4.88 final drive. I know someone with the 4.65 from MFactory who didnt. So there`s that, I guess it depens on who installed it and what kind of final drive you are using.

Gear_One_Performance · 06-02-2016, 04:07 PM

Sometimes the pinion bearing comes off just fine but we typically replace them anyway mostly for peace of mind. It's a lot of work and money to go back through there and replace it again if you find out shortly after break in that it's failing.

mrk1 · 06-02-2016, 10:25 PM

Its a "replace while your in there" item

kev60625 · 06-03-2016, 12:38 AM

Got it guys. I was just under the impression it wasn't always necessary if it comes off fine, only from reading the final drive threads on this site. I will for sure get a new oem set to go with it. Thank you all

mrk1 · 06-03-2016, 02:12 PM

Quote:

Originally Posted by kev60625

only from reading the final drive threads on this site.

There is your problem, the DIY is a pretty shade tree mechanic way to go about it. Does it work, maybe. Is there a more professional way to do it, yes. Its very important to note that not all brand's and ratio's install the same, primarily when it comes to setting pinion height.

06-02-2016, 02:54 PM	#1
kev60625 Senior Member Join Date: Sep 2015 Drives: 2013 WRB Subaru BRZ Location: Chicago Posts: 220 Thanks: 41 Thanked 45 Times in 33 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Who has had to change their pinion bearings with final drive mod?? Hello, I am trying to change my final drive gear to a 4.556 and am wondering who has had to change their pinion bearings? I see it can be re-used and wondering if I should just go that route. My car is a 2013 with 24k miles if that matters, Thanks! The price difference with getting the pinion bearing is huge, it would add $120 to the total

06-02-2016, 10:25 PM	#4
mrk1 Senior Member Join Date: Mar 2013 Drives: Sterling BRZ Ltd Location: New England Posts: 1,702 Thanks: 403 Thanked 1,389 Times in 671 Posts Mentioned: 21 Post(s) Tagged: 2 Thread(s)	Its a "replace while your in there" item __________________ The Build Thread GT28RS - eBoost2 - 3.91 Final Drive - Supra LSD

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06-02-2016, 03:43 PM	#2
Icecreamtruk Senior Member Join Date: Dec 2015 Drives: Track preped NA FRS Location: Montreal, Canada Posts: 987 Thanks: 1,056 Thanked 681 Times in 405 Posts Mentioned: 12 Post(s) Tagged: 0 Thread(s)	Well, I can see we dont have the same idea of what huge means (120 huge? really?). I had to get mine changed for a 4.88 final drive. I know someone with the 4.65 from MFactory who didnt. So there`s that, I guess it depens on who installed it and what kind of final drive you are using.

06-02-2016, 04:07 PM	#3
Gear_One_Performance Senior Member Join Date: Mar 2015 Drives: 2014 BRZ SCCA STU endurance car Location: West Chester, Pennsylvania Posts: 199 Thanks: 2 Thanked 142 Times in 82 Posts Mentioned: 1 Post(s) Tagged: 1 Thread(s)	Sometimes the pinion bearing comes off just fine but we typically replace them anyway mostly for peace of mind. It's a lot of work and money to go back through there and replace it again if you find out shortly after break in that it's failing.

06-03-2016, 12:38 AM	#5
kev60625 Senior Member Join Date: Sep 2015 Drives: 2013 WRB Subaru BRZ Location: Chicago Posts: 220 Thanks: 41 Thanked 45 Times in 33 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Got it guys. I was just under the impression it wasn't always necessary if it comes off fine, only from reading the final drive threads on this site. I will for sure get a new oem set to go with it. Thank you all

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