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The Definitive Differential Thread

Thanks for the INFO !!!

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Old 01-02-2018, 11:19 AM   #136 (permalink)
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Thanks for the INFO !!!
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Old 02-07-2018, 02:33 PM   #137 (permalink)
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I just wanted to say thank you.

Every single time I have a question about the new upgrade I'm wanting to do. I can come here and find a sticky or a wealth of information very easily. Thank you to the starter of this thread and also this awesome community in general!
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Old 10-26-2018, 04:16 PM   #138 (permalink)
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Default 200% Agreed! Thank you!

I totally agree! I am going to tackle install of OSG tomorrow on my 2017 Nismo and feel much more confident about the job after reading all the insights from the guys here on the forum. Have a great weekend and THANKS AGAIN!

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I just wanted to say thank you.

Every single time I have a question about the new upgrade I'm wanting to do. I can come here and find a sticky or a wealth of information very easily. Thank you to the starter of this thread and also this awesome community in general!
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Old 10-26-2018, 08:26 PM   #139 (permalink)
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No, they are noise on slow speed tight turns like in parking lot or turning from a stop at a stop light. It's like having a truck in 4 wheel drive and trying to make a tight turn on pavement.

Sent from my SM-N910P using Tapatalk
With the OS Giken gear lube. My OS Giken diff quite. You don't even know it's there until you start to hammer on the loud pedal.
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Old 10-26-2018, 09:40 PM   #140 (permalink)
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With the OS Giken gear lube. My OS Giken diff quite. You don't even know it's there until you start to hammer on the loud pedal.
I can vouch for that. Dang if it ain't quite as a mouse!!!!!!
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Old 01-20-2019, 06:08 AM   #141 (permalink)
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Hey guys,
My Cusco 1.5 way is being build as we speak.
I have 2014 Nismo 370z and needed to order new stub for the diff. I talked with Z1 that told me that the 2014 Nismo have traded stub hols and you can’t find this part even from Nissan. They sent me a 2013 stub with hardware. From my understanding the hols size on the stub is different. I don’t have my car at the shop I just took the diff there, do you know about this issues with Nismo 2014? When I will try to put back the diff I will have an issue with the hols sizes. Any ideas? Do I need to take the other side off the car also and take it to the shop? Pleas help me as this diff change is very bumpy for me (the car is on jack stands over 3 weeks now)
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Old 09-06-2022, 12:31 PM   #142 (permalink)
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Hello all,

Sorry to bring this back from the dead, as it has been necromanced already.

I have ordered the Cusco LSD251 L15 1.5 Way from Cusco directly and am expecting delivery in November.

I have a sport package with the OEM VLSD, was planning to order the short stub axle and the finned nismo cover. For cars with the OEM VLSD, are all the items on page 1 still applicable?

I intend to do spirited driving fortnightly, and a few track days a year. Is the finned cover necessary?

Thanks in advance.
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Old 11-17-2023, 05:02 PM   #143 (permalink)
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Some good info on this thread. Ty all!
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Old 11-17-2023, 05:28 PM   #144 (permalink)
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I want to add one thing. If you order an OS Giken diff you can have it tuned to your liking before it is shipped to you. It is only $150.00 extra to have it done.
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Old 02-15-2024, 05:39 AM   #145 (permalink)
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My car is just used for road racing. Just curious if anyone has feedback
on having Z1 do the swap. I have a manual factory VSLD. From the
comments I'm leaning toward the OSG or the Nismo GT Pro. When people
talk about maintenance, what does that mean? If it means removing the
diff, opening it up and replacing clutch plates, after how many miles or
track hours, will this have to be done.
This seems like a very time consuming swap. My concern is that a shop
will call it "close enough" rather than spend another two hours taking it
apart, adjusting it and re-assembling it. My hope is that Z1 has done a lot
of swaps and the person doing has the patience to it right.
Do guys, have a gear recommendation for a road racing car?
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Old 02-15-2024, 08:35 AM   #146 (permalink)
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Quote:
Originally Posted by Tedmeister View Post
My car is just used for road racing. Just curious if anyone has feedback
on having Z1 do the swap. I have a manual factory VSLD. From the
comments I'm leaning toward the OSG or the Nismo GT Pro. When people
talk about maintenance, what does that mean? If it means removing the
diff, opening it up and replacing clutch plates, after how many miles or
track hours, will this have to be done.
This seems like a very time consuming swap. My concern is that a shop
will call it "close enough" rather than spend another two hours taking it
apart, adjusting it and re-assembling it. My hope is that Z1 has done a lot
of swaps and the person doing has the patience to it right.
Do guys, have a gear recommendation for a road racing car?
Z1 did my car back in 2017 or so. The clutch type diff will require more frequent fluid changes. That's it. You will also benefit greatly by installing a diff cooler. The diff cooler will keep the fluid from being cooked which will require less fluid changes. If you buy the OS Giken, use the OS Giken diff fluid. It eleminates the driveability issues like the clunking and banging on tight turns.
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Old 02-15-2024, 11:30 AM   #147 (permalink)
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I would recommend going with OS Giken. I track the car, take it for drift events and the LSD works incredibly well.

The maintenance boils down to changing the fluid every year or two, depending on mileage and usage. OS Giken plates aren't meant to be maintained.

Gearing is a better topic...depending on if you plan on boosting the car or keeping it stock, you might want to go with a shorter final drive.
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Old 02-15-2024, 12:30 PM   #148 (permalink)
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I would recommend going with OS Giken. I track the car, take it for drift events and the LSD works incredibly well.

The maintenance boils down to changing the fluid every year or two, depending on mileage and usage. OS Giken plates aren't meant to be maintained.

Gearing is a better topic...depending on if you plan on boosting the car or keeping it stock, you might want to go with a shorter final drive.
For a NA track car to most people run 18in wheels on that would not be wise. For a boosted car with 18's, they go to 3.33's.
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Old 02-15-2024, 04:25 PM   #149 (permalink)
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For a NA track car to most people run 18in wheels on that would not be wise. For a boosted car with 18's, they go to 3.33's.
Agreed. There are other variations though...I have a street/track car, with 19s, so shorter gearing is very nice. Boosted definitely requires longer gearing, especially on 18s, as you said...
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