Nissan 370Z Forum
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Nissan 370Z Forum (http://www.the370z.com/)
-   Engine & Drivetrain (http://www.the370z.com/engine-drivetrain/)
-   -   Forged Performance/ OS Giken LSD Review (pics) (http://www.the370z.com/engine-drivetrain/34681-forged-performance-os-giken-lsd-review-pics.html)

ChipsWithDips 04-23-2011 07:30 PM
Quote:
Originally Posted by Sharif@Forged (Post 1066742)
Just to clarify with respect to the installation issues. We're very familiar with Nissan's habit of using different length and shaped stub axles in the various trims of 350Z. With the 370Z, the base model includes traction control but still an open differential. In the process they also elected to use a revised set of stub axles as well. So with 6 different stub axle choices even OS Giken wasn't entirely sure what ones to use. We ordered one short and one long axle in preparation for the installation. Upon inspection of the OEM parts we discovered that we need two SHORT stub axles NON TAPER with snap ring grooves/snap rings. Instead of sending Chris home and ordering a second short stub axle we machined and modified his existing axle to precisely the same measurements and tolerances of the OEM part which including machining a new snap ring groove. This is a substantial amount of extra time, but we didn't charge the customer of any of this and our objective was to complete the job as promised and get him on the road safely. Under normal circumstances no modifications are needed during install. Mission accomplished. :tiphat:
So if I have a base model, I can order 2 short stub shafts from OS Giken and they will fit without modification?

SPOHN 04-23-2011 08:41 PM
Quote:
Originally Posted by ChipsWithDips (Post 1070310)
So if I have a base model, I can order 2 short stub shafts from OS Giken and they will fit without modification?
You have to order them from Nissan.

Sharif@Forged 04-23-2011 09:07 PM
Quote:
Originally Posted by ChipsWithDips (Post 1070310)
So if I have a base model, I can order 2 short stub shafts from OS Giken and they will fit without modification?
The stub axles are a Nissan oem part. You can order them from Ryan or myself and we will make sure you have what you need. It goes without saying you also need two new side bearings.

Belsavis 05-09-2011 01:46 PM
Did you replace the side bearings? If so, do you have the part number?
Thanks

SPOHN 05-09-2011 01:55 PM
We were planning on it. But being my car had only 2000 miles on it they were in great shape. But with some milage on them it's best to go ahead and replace along with the seals. I'd also look into the Nismo differential cover with the cooling fins. I should of picked one up before I had this installed.

Here's a link for the part number. Which can be had at any dealer. Just confirm with Nissan this is the right part though.

BEARING-DIFFERENTIAL SIDE - 370Z (Z34) 2009+ :: Nissan Parts, NISMO and Nissan Accessories - Courtesyparts.com

Sharif@Forged 05-09-2011 05:29 PM
Quote:
Originally Posted by Belsavis (Post 1098727)
Did you replace the side bearings? If so, do you have the part number?
Thanks
Chris is mistaken. We replaced the side bearings as it's not possible to remove them from the old diff without likely damage. We did NOT replace the side seals because they looked perfectly new and had very low miles on them. No reason to change them out. :)

SPOHN 05-09-2011 05:57 PM
Quote:
Originally Posted by Sharif@Forged (Post 1099368)
Chris is mistaken. We replaced the side bearings as it's not possible to remove them from the old diff without likely damage. We did NOT replace the side seals because they looked perfectly new and had very low miles on them. No reason to change them out. :)
Guess I had it backwards then.:shakes head:

Belsavis 05-10-2011 09:05 AM
Quote:
Originally Posted by Sharif@Forged (Post 1099368)
Chris is mistaken. We replaced the side bearings as it's not possible to remove them from the old diff without likely damage. We did NOT replace the side seals because they looked perfectly new and had very low miles on them. No reason to change them out. :)
Thanks guys! Definitely the part I thought it was. I also heard they were pretty tough to get on there.

Ryan@Forged 05-10-2011 09:45 AM
Quote:
Originally Posted by Belsavis (Post 1100531)
Thanks guys! Definitely the part I thought it was. I also heard they were pretty tough to get on there.
Also keep in mind with the OS LSD you will need 2 of the Right Side stub axles, NOT 1 L and 1 R. Oh and yes, they can sometimes be a huge pain to get in there :)

Belsavis 05-10-2011 10:19 AM
Quote:
Originally Posted by Ryan@Forged (Post 1100683)
Also keep in mind with the OS LSD you will need 2 of the Right Side stub axles, NOT 1 L and 1 R. Oh and yes, they can sometimes be a huge pain to get in there :)
Right. I'm actually putting a Quaife into my base open diff and it shouldn't require any axle stubs.

cavemancan 08-20-2012 09:34 AM
Ok...so let's say you have a Sport model with the factory LSD. Would the OS Giken LSD be a good idea? Would it make that much if a difference? And in that case what parts would I need?

I read everything but it appears the discussion was geared (LOL) towards the no LSD base models.

:tiphat:

SPOHN 08-20-2012 09:56 AM
Yes it's good to swap to a true LSD over the stock VLSD which isn't great for the true enthusiast who will push the car more beyond DD like lots of spirited driving and defiantly track and auto cross. The stock unit will heat up and basically will act as a open diff like the base model.

The OSG will fit in any model just the base requires different axle stubs.

cavemancan 08-20-2012 10:20 AM
Quote:
Originally Posted by SPOHN (Post 1877733)

The OSG will fit in any model just the base requires different axle stubs.
So I wouldn't need any additional parts like you did? I assume I would need seals etc?

To bad Forged is in GA...too far :/

hughdogz 02-27-2013 11:21 AM
SPHON,

I just had the OS Giken super lock installed in my 09 base model.

Did you have any issues with the ABLS (Active Brake Limited Slip) still on? i.e. does it interfere with the clutch LSD operation?

I don't think there is a setting to disable it via UpRev...

dP3NGU1N 02-27-2013 12:21 PM
I apologize in advance for my ignorance and since the conversation is already going I thought it appropriate to ask here:

On OSG's website they list the z33/z34 together when you sort them by manufacturer and it mentions it's for the AT only. I have a sport package z34 with MT, is this going to be a problem to install? Am I missing something here? See link below:

Product

Another thing is that I had planned to get some KW v3's with my tax return money, however, I know I'm eventually going to need a proper LSD for the track as well. Which one do you guys think would be the better early buy? I think our stock shocks seem pretty good with sways but I'd like to have more experienced opinions.

Thanks and sorry for the slight thread jack!


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