Differential Temperature - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

fika84 · 04-04-2018, 11:57 AM

Thought I'd post this up as informational. I was curious as to the temperature that my diff was reaching, mainly because I've put in the MFactory mechanical LSD and want to make sure I'm not going to toast it on the track.. The fluid that I use is Torco RTF and the viscosity of that fluid goes down quite a bit after 220F.

Anyway, I installed a new cover and added a temp gauge and so far under both normal and canyon driving I've hardly been over 140F..

I'll update this thread once I get back out on the track as I KNOW I'm harder on the car there than the canyons.. to paranoid in canyons..

8RZ · 04-04-2018, 11:57 AM

Good info, thanks for sharing.

Roadcone · 04-04-2018, 12:31 PM

which cover did you install?

mkivsoopra · 04-04-2018, 01:22 PM

FWIW, I overheated my OS Giken at the track... this is with the Cusco diff cover. My setup is a bit extreme though: 5.29:1 final drive, 11k engine RPM. This was before adding an external cooler and temp probe.

Roadcone · 04-04-2018, 01:45 PM

Quote:

Originally Posted by mkivsoopra

FWIW, I overheated my OS Giken at the track... this is with the GReddy diff cover. My setup is a bit extreme though: 5.29:1 final drive, 11k engine RPM. This was before adding an external cooler and temp probe.

what engine was turning 11k?!

mkivsoopra · 04-04-2018, 01:53 PM

Quote:

Originally Posted by Roadcone

what engine was turning 11k?!

3.0L Synergy V8

fika84 · 04-04-2018, 06:28 PM

Quote:

Originally Posted by Roadcone

which cover did you install?

I tried this one out. I had to notch some of the fins off to clear the Perrin exhaust.

https://www.ebay.com/itm/SICKSPEED-P...FWgXlJ&vxp=mtr

fika84 · 04-04-2018, 06:30 PM

Quote:

Originally Posted by mkivsoopra

FWIW, I overheated my OS Giken at the track... this is with the GReddy diff cover. My setup is a bit extreme though: 5.29:1 final drive, 11k engine RPM. This was before adding an external cooler and temp probe.

I love your build!

I'm rocking a 4.88 FD... and no v8... and no 11k... but what cooler and pump did you install?

mkivsoopra · 04-04-2018, 07:10 PM

Quote:

Originally Posted by fika84

I love your build!

I'm rocking a 4.88 FD... and no v8... and no 11k... but what cooler and pump did you install?

Tilton oil pump and Setrab 1-13. We'll see how it fares!

sw20kosh · 04-04-2018, 07:40 PM

@mkivsoopra can now pass miata's with ease!

mkivsoopra · 04-04-2018, 08:30 PM

Quote:

Originally Posted by sw20kosh

@mkivsoopra can now pass miata's with ease!

woohoo!

fika84 · 04-04-2018, 10:01 PM

Quote:

Originally Posted by mkivsoopra

FWIW, I overheated my OS Giken at the track... this is with the Cusco diff cover. My setup is a bit extreme though: 5.29:1 final drive, 11k engine RPM. This was before adding an external cooler and temp probe.

Another question, what temp were you seeing when it overheated, do you know?

mkivsoopra · 04-05-2018, 04:27 AM

Quote:

Originally Posted by fika84

Another question, what temp were you seeing when it overheated, do you know?

Unfortunately, no, I don't know. My LSD was stuck locked while on track. When it cooled down, it seemed ok again, but it permanently became an open diff after that.

lutfy · 04-05-2018, 09:48 AM

Quote:

Originally Posted by mkivsoopra

Unfortunately, no, I don't know. My LSD was stuck locked while on track. When it cooled down, it seemed ok again, but it permanently became an open diff after that.

This is not good

has anyone with stock gearing/stage 2 motor experienced this or its because of 'power' and speedier ratio?

Cheers,

Lutfy

04-04-2018, 12:31 PM	#3
Roadcone StreetKart Join Date: Jul 2013 Drives: 2014 Scion FR-S Monogram Location: Upstate, SC Posts: 477 Thanks: 43 Thanked 180 Times in 111 Posts Mentioned: 10 Post(s) Tagged: 1 Thread(s)	which cover did you install? __________________ TRD\|Verus Engineering\|Titan7\|DEZOD Motorsports\|JDL Auto Design

04-04-2018, 01:22 PM	#4
mkivsoopra Senior Member Join Date: Dec 2012 Drives: BRZ Location: CA Posts: 805 Thanks: 939 Thanked 950 Times in 412 Posts Mentioned: 161 Post(s) Tagged: 1 Thread(s)	FWIW, I overheated my OS Giken at the track... this is with the Cusco diff cover. My setup is a bit extreme though: 5.29:1 final drive, 11k engine RPM. This was before adding an external cooler and temp probe. Last edited by mkivsoopra; 04-04-2018 at 08:50 PM. Reason: Cusco diff cover, not GReddy

04-04-2018, 07:40 PM	#10
sw20kosh Senior Member Join Date: Jul 2012 Drives: 2013 Black FR-S Location: SF Posts: 3,030 Thanks: 881 Thanked 2,014 Times in 990 Posts Mentioned: 153 Post(s) Tagged: 1 Thread(s)	@mkivsoopra can now pass miata's with ease! __________________ 86DRIVE Challenge

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