OS Giken Super Lock LSD Install - Page 3 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

wparsons · 01-18-2019, 04:02 PM

Quote:

Originally Posted by Bodalenko

Also; does the Giken negate the need to use Whiteline style diff inserts to stiffen the mounts? Now that I think about it I think I saw you had them in fitted in your car during the Giken install. Is the NVH any worse with the Giken and Diff mount inserts?

Nope. You still need to stiffen up the diff mounts to lessen how much it moves under load.

justinco · 01-18-2019, 05:53 PM

Quote:

Originally Posted by xwd

Hey Justin, did you have to change the side bearing shims at all? I'm assuming not by the video.

I did not.

Quote:

Originally Posted by Bodalenko

Everything I read including other install articles for the Giken show and mention that backlash is checked and may need adjustment yet you installed yours without, apparently, checking backlash whatsoever. Is there any whine or noise, apart from chatter when cornering, at all? Is it as silent as the OEM? Tossing up between the Giken and the Cusco but if the Giken is a DIY v Cusco being a pro instal job, I could spend the extra the on buying Giken and instal myself.

Also; does the Giken negate the need to use Whiteline style diff inserts to stiffen the mounts? Now that I think about it I think I saw you had them in fitted in your car during the Giken install. Is the NVH any worse with the Giken and Diff mount inserts?

So keep in mind my install might not apply to absolutely everyone. If it seems out of wack, you should probably go through the full process to be sure.

My OS Giken contact (who is also a friend, and is also on these forums) instructed me to drop it right in. I have other friends (also on the forum) who have swapped the OSG diff in and out multiple times and did not have to do anything other than pull and replace. YMMV.

My diff is quiet, there might be a little whine when slowing but that's about it. It clunked A LOT with the Motul fluid in there, nice and quiet once switched to the proper OS 250R.

The NVH did not change after the OSG diff was installed. I still recommend the diff inserts regardless of what diff you have in there, it makes a big difference.

Breadman · 01-18-2019, 08:39 PM

really fucking dumb question, how beneficial would this be in winter weather? took my car to an empty lot to play around in the snow today and was thinking on the way home good thing i didnt get stuck. saw this thread and wondered.

justinco · 01-18-2019, 08:46 PM

Quote:

Originally Posted by Breadman

really fucking dumb question, how beneficial would this be in winter weather? took my car to an empty lot to play around in the snow today and was thinking on the way home good thing i didnt get stuck. saw this thread and wondered.

Your stock Torsen is just fine.

Breadman · 01-18-2019, 09:06 PM

Quote:

Originally Posted by justinco

Your stock Torsen is just fine.

luckily im not dumb enough to put that to the test tomorrow

Bodalenko · 01-19-2019, 07:32 AM

Quote:

Originally Posted by justinco

I still recommend the diff inserts regardless of what diff you have in there, it makes a big difference.

I had them in and took them out due to NVH thru the drive train but I have the subframe inserts, gearbox inserts, shift springs, and the IRP shifter all adding to it...

Yes they make a huge difference and if you can put up with the mild side effects are well worth doing.

bhmax · 01-19-2019, 10:48 AM

Quote:

Originally Posted by Bodalenko

I had them in and took them out due to NVH thru the drive train but I have the subframe inserts, gearbox inserts, shift springs, and the IRP shifter all adding to it...

Yes they make a huge difference and if you can put up with the mild side effects are well worth doing.

It’s been written elsewhere here, but a lot of us including myself have left out the bushings (of the total Whiteline setup) closest to the head of the vertical diff bolts. It surprisingly removed a lot of the noise for me. Another one for me was the trans insert. It wasn’t WL brand, but noise went down after I replaced it with an STI mount.

GrabTheWheel · 09-24-2019, 05:33 PM

Quote:

Originally Posted by justinco

I show the gasket going on in the video. It is the gasket from DIF/FRsport.

https://frsport.com/dif-10590-differ...asket-fr-s-brz

Now that you mention it, I think I forgot to add that to the video description.

Justin, do you have anything positive or negative to say about this gasket? I ended up ordering one and I haven't heard of anyone else using it.

Joon525 · 09-24-2019, 08:01 PM

Quote:

Originally Posted by GrabTheWheel

Justin, do you have anything positive or negative to say about this gasket? I ended up ordering one and I haven't heard of anyone else using it.

I'm currently rebuilding a dif for friends who have a local shop to me and the previous builder used that gasket and it worked great. I even ordered the same thing for when I'm done with this rebuild.

justinco · 09-24-2019, 10:20 PM

Quote:

Originally Posted by GrabTheWheel

Justin, do you have anything positive or negative to say about this gasket? I ended up ordering one and I haven't heard of anyone else using it.

It worked perfectly fine!

SON1C · 02-17-2020, 12:15 PM

Quote:

Originally Posted by Bodalenko

I had them in and took them out due to NVH thru the drive train but I have the subframe inserts, gearbox inserts, shift springs, and the IRP shifter all adding to it...

Yes they make a huge difference and if you can put up with the mild side effects are well worth doing.

how much NVH do you feel that they added?

So the IRP shifter is STX legal?

Mykii · 01-03-2022, 03:22 PM

Anyone here know how these OS Giken's come straight from the factory? I haven't found much info on it as a 1.5 way or 2 way and there aren't any specs on it. When I contacted OS Giken USA, they told me to send one in to get tuned for my specific application. I'm looking to drift with it. Any info out there or resources you've been able to find?

justinco · 01-03-2022, 10:36 PM

Quote:

Originally Posted by Mykii

Anyone here know how these OS Giken's come straight from the factory? I haven't found much info on it as a 1.5 way or 2 way and there aren't any specs on it. When I contacted OS Giken USA, they told me to send one in to get tuned for my specific application. I'm looking to drift with it. Any info out there or resources you've been able to find?

Give CounterSpace Garage a call. I got mine through them and they had it configured for my application and needs.

RedReplicant · 01-04-2022, 06:24 PM

If someone has a picture of one pre-install looking in at the ramps we could tell you.

I will say that it is totally worth it to send the diff off to Lugod (OSGiken USA in CA) to be retuned, it was night and day on my S2000.

01-03-2022, 03:22 PM	#40
Mykii Noodleking Join Date: May 2019 Drives: 2013 Firestorm FRS Location: Las Vegas Posts: 39 Thanks: 17 Thanked 9 Times in 5 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Anyone here know how these OS Giken's come straight from the factory? I haven't found much info on it as a 1.5 way or 2 way and there aren't any specs on it. When I contacted OS Giken USA, they told me to send one in to get tuned for my specific application. I'm looking to drift with it. Any info out there or resources you've been able to find? __________________ 2013 Firestorm FR-S, Kraftwerks C38 kit, FT-86 UEL Catted Headers, TRD D-Tip cat-back, Vibrant 1140 Resonator, Exedy Stage 1 Normal/smoother clutch that replaced the Stage 2 3-puck clutch, Exedy Lightweight flywheel, DSS carbon fiber driveshaft, TEIN springs on performance package Sachs dampers, Megan Racing Inner tie rods, 17x8 +35 Enkei Silver RPF1's, OS-Giken 1.5-way diff, J-Luth steering wheel and now a GKTech angle kit-- which rubs.

01-04-2022, 06:24 PM	#42
RedReplicant Senior Member Join Date: Aug 2015 Drives: None Location: Arizona Posts: 905 Thanks: 1,459 Thanked 1,209 Times in 515 Posts Mentioned: 10 Post(s) Tagged: 0 Thread(s)	If someone has a picture of one pre-install looking in at the ramps we could tell you. I will say that it is totally worth it to send the diff off to Lugod (OSGiken USA in CA) to be retuned, it was night and day on my S2000. __________________ 2015 Subaru BRZ - TT5 K24 Swap

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