Why you need a LSD if you like cornering! - Page 24 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

GT86_PRAGUE · 08-13-2015, 01:53 AM

Quote:

Originally Posted by CSG David

Generally "helical" means "Torsen". Clutch-types are more predictable and consistent. If you would like a more custom setup, please let us know.

I would like to have your dif, but it is not gonna happen due to expensive delivery and huge import fees. In reality I would pay double what guys in US pay and thats not worth it but thanks for your offer.
I can buy only Mfactory things because they are in Europe or pay big extra.

CSG David · 08-13-2015, 04:06 AM

Quote:

Originally Posted by GT86_PRAGUE

I would like to have your dif, but it is not gonna happen due to expensive delivery and huge import fees. In reality I would pay double what guys in US pay and thats not worth it but thanks for your offer.
I can buy only Mfactory things because they are in Europe or pay big extra.

The shock loading is what damages the Torsens/Helical LSDs. Suspension wise, you may need to dial that in to reduce that type of issue.

Sleepless · 08-13-2015, 08:21 PM

What is shock loading and how is it managed with suspension tweaks?

CSG Mike · 08-13-2015, 09:00 PM

Quote:

Originally Posted by Sleepless

What is shock loading and how is it managed with suspension tweaks?

In short, dial in the suspension to prevent dramatic changes in load, e.g. going from full load, to no load, to full load. An example is to prevent lifting a wheel, if possible (this isn't always possible depending on conditions).

Another example is to not drive with TCS/VSA on. If VSA activates, it's grabbing the brakes at a rear wheel, which is a large shock load to the diff, which is already working to try to prevent wheel spin. This can result in differential failure.

GirlRepellent · 08-14-2015, 12:12 PM

Thinking I should do diff and shorter ring gear next!

CSG Mike · 08-14-2015, 12:19 PM

Quote:

Originally Posted by GirlRepellent

Thinking I should do diff and shorter ring gear next!

Let us know when you're ready!

Sleepless · 08-14-2015, 12:32 PM

Quote:

Originally Posted by GirlRepellent

Thinking I should do diff and shorter ring gear next!

Then there is that slippery slope of contemplating an LSD "while you are there"

That's my dilemma. Stay NA and do 4.56 rear gears or go JRSC which will make me want an LSD! Either way, I'm touching the diff! Pulls hair out

ultra · 08-14-2015, 05:04 PM

Seems like a final drive gear swap would be a great thing to do along with a diff.

Boy oh boy CSG...you guys sure know how to scare the beejeezus out of my wallet.

drewbot · 08-14-2015, 05:14 PM

I wanna see someone do a 5.1 in the AT. JUST DO IT

Sent from my A0001 using Tapatalk

CSG Mike · 08-14-2015, 07:34 PM

Quote:

Originally Posted by drewbot

I wanna see someone do a 5.1 in the AT. JUST DO IT

Sent from my A0001 using Tapatalk

It's been done, and I've driven it.

It makes 3rd gear almost like a MT's 3rd gear. 1st and 2nd are super short, but the gears are actually useable on track!

wizzo · 12-19-2015, 02:41 PM

Hey Mike.. I have been running into issues in the rear in the last couple of track days and on the street, wondering what you think/suggest.

It seems like I am spinning the rear inside tire under acceleration. When exiting the apex and unwinding the steering wheel while beginning to apply power i get this feeling of traction then all of a sudden i feel the RPMs jump up and what feels like the inside tire spinning even though i dont feel the car lift/tripod.

It seems to happy mainly on the tigher lower speed stuff top of 2nd beginning of 3rd. Specially through a tight chicane on our local track while accelerating through it.. I have made some adjustments to the compression in the front and increased rebound alightly upfront. I have tried to reduce rebound in the rear incase the rear shock is not opening fast enough on transitions causing this issue but no hope.

What changes do u suggest front/rear..

P.S a few track days ago I had done 35 mins of hot laps.. untill i felt the rear diff acting up.. when i entered the pits it was really really clunks and making loud bangs.. as usual i change rear diff fluid every 2-3 track days and run motul which helps it feel normal again. Could i have caused damage to oem torsen?

n0thing · 01-17-2018, 10:23 AM

bumping old thread

for those using os giken or cusco 1.5 way, did you just install straight into the diff or had it disassembled to adjust the clamping force? i've read that over-the-shelf setting is usually tuned for drifting and so adjustment is needed for grip driving.

CSG Mike · 01-17-2018, 03:37 PM

Quote:

Originally Posted by n0thing

bumping old thread

for those using os giken or cusco 1.5 way, did you just install straight into the diff or had it disassembled to adjust the clamping force? i've read that over-the-shelf setting is usually tuned for drifting and so adjustment is needed for grip driving.

LSDs ordered from CSG are typically custom configured to suit each driver.

n0thing · 01-18-2018, 08:48 AM

With regards to OS Giken Superlock, I've found two part# "TY421-HA" and "D-TC1FA20-S". How do they differ, if any?

08-13-2015, 08:21 PM	#325
Sleepless Senior Member Join Date: Apr 2014 Drives: 2014 BRZ Location: Redmond, WA Posts: 639 Thanks: 299 Thanked 392 Times in 229 Posts Mentioned: 8 Post(s) Tagged: 0 Thread(s)	What is shock loading and how is it managed with suspension tweaks? __________________ Pete 14 Track BRZ (Build Thread) cmslaptimer.com

08-14-2015, 05:04 PM	#330
ultra Curious cat. Join Date: May 2012 Drives: 86 GT base M/T - Red Location: Dubai Posts: 775 Thanks: 840 Thanked 383 Times in 191 Posts Mentioned: 31 Post(s) Tagged: 0 Thread(s)	Seems like a final drive gear swap would be a great thing to do along with a diff. Boy oh boy CSG...you guys sure know how to scare the beejeezus out of my wallet. __________________ 2013 Toyota 86 GT M/T 2009 Renault Clio Sport R27 Team F1 Edition (sold) 1991 Mazda MX5 Miata (sold) 2007 Mitsubishi Evo 9 RS (sold) 2006 VW Golf R32 (sold)

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08-14-2015, 12:12 PM	#327
GirlRepellent Senior Member Join Date: Jul 2013 Drives: Evo X FE/FRS 10 Series Location: Philadelphia Posts: 122 Thanks: 56 Thanked 93 Times in 45 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Thinking I should do diff and shorter ring gear next!

08-14-2015, 05:14 PM	#331
drewbot ( ͡° ͜ʖ ͡°) Join Date: Sep 2013 Drives: '13 Whiteout FR-S A/T Location: Mississauga, ON Posts: 1,996 Thanks: 1,985 Thanked 1,452 Times in 752 Posts Mentioned: 36 Post(s) Tagged: 1 Thread(s)	I wanna see someone do a 5.1 in the AT. JUST DO IT Sent from my A0001 using Tapatalk

12-19-2015, 02:41 PM	#333
wizzo Member Join Date: Jun 2014 Drives: 2014 Toyota 86 Location: Dubai, UAE Posts: 84 Thanks: 2 Thanked 17 Times in 14 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Hey Mike.. I have been running into issues in the rear in the last couple of track days and on the street, wondering what you think/suggest. It seems like I am spinning the rear inside tire under acceleration. When exiting the apex and unwinding the steering wheel while beginning to apply power i get this feeling of traction then all of a sudden i feel the RPMs jump up and what feels like the inside tire spinning even though i dont feel the car lift/tripod. It seems to happy mainly on the tigher lower speed stuff top of 2nd beginning of 3rd. Specially through a tight chicane on our local track while accelerating through it.. I have made some adjustments to the compression in the front and increased rebound alightly upfront. I have tried to reduce rebound in the rear incase the rear shock is not opening fast enough on transitions causing this issue but no hope. What changes do u suggest front/rear.. P.S a few track days ago I had done 35 mins of hot laps.. untill i felt the rear diff acting up.. when i entered the pits it was really really clunks and making loud bangs.. as usual i change rear diff fluid every 2-3 track days and run motul which helps it feel normal again. Could i have caused damage to oem torsen?

01-17-2018, 10:23 AM	#334
n0thing Senior Member Join Date: Jan 2014 Drives: Subaru BRZ Location: Markham Posts: 394 Thanks: 48 Thanked 90 Times in 53 Posts Mentioned: 6 Post(s) Tagged: 0 Thread(s)	bumping old thread for those using os giken or cusco 1.5 way, did you just install straight into the diff or had it disassembled to adjust the clamping force? i've read that over-the-shelf setting is usually tuned for drifting and so adjustment is needed for grip driving.

01-18-2018, 08:48 AM	#336
n0thing Senior Member Join Date: Jan 2014 Drives: Subaru BRZ Location: Markham Posts: 394 Thanks: 48 Thanked 90 Times in 53 Posts Mentioned: 6 Post(s) Tagged: 0 Thread(s)	With regards to OS Giken Superlock, I've found two part# "TY421-HA" and "D-TC1FA20-S". How do they differ, if any?

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