OS Giken LSD + 4.8 FD. Do they fit together? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Rookie84 · 05-21-2015, 04:27 AM

I'm about to do full bolt-on NA mods, and want to install 4.8 final drive from Revolution. Will it fit together with OS Giken 1.5 way LSD? If not, what is the highest FD ratio that I can go with?

Thanks in advance.

kingkenny · 05-21-2015, 04:44 AM

5.1 FD , Revolution and Auto Factory have it !! BTW , I have 5.1 from auto factory with OEM LSD .

there shouldn't have any issue with the fitment .

Rookie84 · 05-21-2015, 05:59 AM

Quote:

Originally Posted by kingkenny

5.1 FD , Revolution and Auto Factory have it !! BTW , I have 5.1 from auto factory with OEM LSD .

there shouldn't have any issue with the fitment .

How do you like 5.1FD? That is pretty extreme haha. I am worried that my gearing would be too short with lowly 4.8.

BTW, I was asking this since Cusco has separate LSDs for 4.8 and 5.1 FD only, which makes me think that there might be clearance issues with larger final drives.

kingkenny · 05-21-2015, 06:34 AM

I write the mail to auto factory to confirm fitment before purchase the FD . I guess the reason cusco have LSD special for 5.1 is because the gear ratio being so short , LSD need to active lock at higher rpm .
And I was thinking to do the LSD as the same time , but give up because I like it remain street driving friendly , even the car mostly driving on track /autoX / dirft event .

In the tight parking uphill with tight curve ,driving with the same speed experience some unwant OEM LSD activity , this is the only issue . I learn to keep the rpm low(lower speed) to avoid it .Free way driving will be more noise(higher rpm) , but this is no issue for me either .

I love the 5.1 FD , it is much more fun to drive !!

05-21-2015, 04:27 AM	#1
Rookie84 Senior Member Join Date: Mar 2015 Drives: '02 GS300, '12 S80 T5, '15 BRZ 6MT Location: Seoul, South Korea / Jeddah, KSA Posts: 142 Thanks: 81 Thanked 38 Times in 30 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	OS Giken LSD + 4.8 FD. Do they fit together? I'm about to do full bolt-on NA mods, and want to install 4.8 final drive from Revolution. Will it fit together with OS Giken 1.5 way LSD? If not, what is the highest FD ratio that I can go with? Thanks in advance.

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05-21-2015, 04:44 AM	#2
kingkenny Member Join Date: Mar 2015 Drives: 2014 Toyota GT86 Location: Duabi , U.A.E Posts: 64 Thanks: 34 Thanked 23 Times in 18 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	5.1 FD , Revolution and Auto Factory have it !! BTW , I have 5.1 from auto factory with OEM LSD . there shouldn't have any issue with the fitment .

05-21-2015, 06:34 AM	#4
kingkenny Member Join Date: Mar 2015 Drives: 2014 Toyota GT86 Location: Duabi , U.A.E Posts: 64 Thanks: 34 Thanked 23 Times in 18 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I write the mail to auto factory to confirm fitment before purchase the FD . I guess the reason cusco have LSD special for 5.1 is because the gear ratio being so short , LSD need to active lock at higher rpm . And I was thinking to do the LSD as the same time , but give up because I like it remain street driving friendly , even the car mostly driving on track /autoX / dirft event . In the tight parking uphill with tight curve ,driving with the same speed experience some unwant OEM LSD activity , this is the only issue . I learn to keep the rpm low(lower speed) to avoid it .Free way driving will be more noise(higher rpm) , but this is no issue for me either . I love the 5.1 FD , it is much more fun to drive !!

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