First Track day with OS Giken LSD and extreme noise

Hotrodz · 05-30-2018, 12:49 PM

If you are going to track your car the three Rs will apply...race, repair and repeat. This is the reality with tracking...because race car!

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Justint5387 · 05-31-2018, 12:30 PM

Did you turn off the TC l when you were tracking?

I had a OSG in the BRZ and they recommend we turn the TC off since you don't want sudden forces to hit the drivetrain.

Rusty · 05-31-2018, 03:19 PM

Quote:

Originally Posted by Hotrodz

If you are going to track your car the three Rs will apply...race, repair and repeat. This is the reality with tracking...because race car!

Sent from my SM-G965U using Tapatalk

CJBinder · 06-02-2018, 05:47 AM

Quote:

Originally Posted by Justint5387

Did you turn off the TC l when you were tracking?

I had a OSG in the BRZ and they recommend we turn the TC off since you don't want sudden forces to hit the drivetrain.

I never have TC on. It is the first thing I turn off when getting into the car!

CJBinder · 06-02-2018, 05:50 AM

So after changing the diff fluid again. Found out the Whiteline bushing has melted that is next to the diff. Talking to company I bought it from, the diff should never get that hot. Definitely an issue with the diff I got.

Martijn_b · 06-02-2018, 06:36 AM

That doesnt sound good, I hope you sort this out with them. Did you do the installation yourself?

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Rusty · 06-02-2018, 01:27 PM

To melt the bushing. It got HOT. I would pull the diff out and inspect it. What did the fluid look like when you changed it?

Elmo370z · 06-02-2018, 02:51 PM

Hot humid day, no way to cool the diff what do you expect. All high performance track cars come with some wAy to cool the diff and other components prone to heAt

DarkJak · 06-03-2018, 12:51 PM

Already ordered an OS Giken lsd and waiting for it to arrive still, but it looks like I’ll ya e to save some more for a diff cooler, if the extra capacity and the Z1 diff cover still didn’t allow the diff fluid to survive one full session.

braydo25 · 06-04-2018, 12:42 AM

I would remove the diff and inspect. I had a pinion on a diff come loose after a rebuild one time and it sounds a lot like what you're talking about. It will just get worse until boom.

2011 Nismo#91 · 06-04-2018, 09:40 AM

<3 Gear diff. Clutch diffs have a lot of setup involved how aggressive is yours set to be, it should be on the less or even least aggressive engagement setting for road courses. How are your stack springs, plates active, etc setup?
Regardless there's no way you should be melting anything with a diff somethings defiantly wrong.

( Click to show/hide )

beauz · 06-05-2018, 06:36 PM

Quote:

Originally Posted by B&W_Evader

Does not sound right to me either. How much glitter is in the oil?

Pics are my 1st differential oil change after OS Giken install.

Mine looked exactly the same after 1st change new 4.08 installed at the same time. Was super grabby (sensitive for lockup) for the first 200kms and clunky/poppy but settled in fine. Only hit 80 degrees C (24 c ambient) on the weekend track outings. I did my first oil change 2000kms after install before I hit the track. I would definitely do the figure 8 break in even though OS giken says it’s not necessary if I had my time again.

Justint5387 · 06-06-2018, 11:27 AM

This sounds more like an install issue than a diff issue. A few clutch plates should not generate that much heat to melt a bushing. Sounds like the gears were working way too hard.

B&W_Evader · 06-06-2018, 01:23 PM

Yep, I did the 10x figure 8 break-in first thing. I figured if it was good for other LSDs it couldn't hurt.

CJBinder · 06-07-2018, 09:14 AM

Quote:

Originally Posted by Martijn_b

That doesnt sound good, I hope you sort this out with them. Did you do the installation yourself?

Verstuurd vanaf mijn SM-G950F met Tapatalk

I bought the Z1 Prebuilt diff. So my mechanic just needed to just install the diff.

05-30-2018, 12:49 PM	#16 (permalink)
Hotrodz A True Z Fanatic Join Date: Aug 2012 Location: NW, AZ Posts: 9,330 Drives: 10 Nissan 370z Nismo Rep Power: 2684385	If you are going to track your car the three Rs will apply...race, repair and repeat. This is the reality with tracking...because race car! Sent from my SM-G965U using Tapatalk cv129, PEPI and Leadfooted like this. __________________ *Fast Intentions TT Installed and Tuned by Seb at SpecialtyZ 610whp 560tq:\|Fast Intentions 3" TT-TDX*\|SpecialtyZ/Fast Intentions 72 Row Oil Cooler\|SZ 6 Puck Clutch & Flywheel\|3GsCustoms\|Z1\|Wavetrac\|Hotchkis\|Whiteline \|Blitz\|Fortune Auto 500\|Fujimura\|SPL\|H&R\|TK\|TWM\|RPM Rollbar\|Sparco\|Next Level Performance\|TrackSpec\|AeroFlow Dynamics\|Pioneer\|

05-31-2018, 12:30 PM	#17 (permalink)
Justint5387 Base Member Join Date: Aug 2014 Location: Bay Area, CA Posts: 188 Drives: 2016 370z Silver 6MT Rep Power: 12	Did you turn off the TC l when you were tracking? I had a OSG in the BRZ and they recommend we turn the TC off since you don't want sudden forces to hit the drivetrain. Rusty and Hotrodz like this.

06-02-2018, 05:50 AM	#20 (permalink)
CJBinder Enthusiast Member Join Date: May 2010 Location: Omaha NE Posts: 272 Drives: 09 370Z PG M6 Rep Power: 25	So after changing the diff fluid again. Found out the Whiteline bushing has melted that is next to the diff. Talking to company I bought it from, the diff should never get that hot. Definitely an issue with the diff I got. __________________ Injen cold air intakes, Ported upper and lower manifolds, OS Giken LSD, F1 Long Tube Headers, Magnaflow CBE. Natural Baby

06-02-2018, 06:36 AM	#21 (permalink)
Martijn_b Enthusiast Member Join Date: Jan 2018 Location: Netherlands Posts: 280 Drives: 2010 370z MB 6MT Rep Power: 3786	That doesnt sound good, I hope you sort this out with them. Did you do the installation yourself? Verstuurd vanaf mijn SM-G950F met Tapatalk pitser73 likes this. __________________ Instagram: Boosted_Fairlady

06-02-2018, 01:27 PM	#22 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 35,221 Drives: 2011 Nismo GM 6M Rep Power: 2684438	To melt the bushing. It got HOT. I would pull the diff out and inspect it. What did the fluid look like when you changed it? cv129 likes this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

06-02-2018, 02:51 PM	#23 (permalink)
Elmo370z A True Z Fanatic Join Date: Apr 2013 Location: st. petersburg Posts: 5,709 Drives: 09 nissan 370z Sp M6 Rep Power: 295378	Hot humid day, no way to cool the diff what do you expect. All high performance track cars come with some wAy to cool the diff and other components prone to heAt

06-03-2018, 12:51 PM	#24 (permalink)
DarkJak A True Z Fanatic Join Date: Jun 2011 Location: Madison, WI Posts: 1,397 Drives: 2009 370Z Rep Power: 16804	Already ordered an OS Giken lsd and waiting for it to arrive still, but it looks like I’ll ya e to save some more for a diff cooler, if the extra capacity and the Z1 diff cover still didn’t allow the diff fluid to survive one full session. __________________ @stupidtoycars \| My track vids 09 7AT\|MCS 2WNR\|Topgunz Rotrex\|Ecutek (Eugene)\|Maxxis RC1\|Titan-7 TS-5\|OSG LSD\|Rear Mount Derale Oil Cooler (WIP)+25 Trans Cooler\|Fismo\|G-LOC R12/R10\|Zeta III L\|NLR Wing and Splitter\|CJM Pan and Fuel Hat\|Radium Surge Tank\|AP Racing CP9668

06-04-2018, 12:42 AM	#25 (permalink)
braydo25 Base Member Join Date: Apr 2012 Location: Tacoma Posts: 67 Drives: Nismo z34 Rep Power: 13	I would remove the diff and inspect. I had a pinion on a diff come loose after a rebuild one time and it sounds a lot like what you're talking about. It will just get worse until boom.

06-04-2018, 09:40 AM	#26 (permalink)
2011 Nismo#91 A True Z Fanatic Join Date: Mar 2011 Location: NJ Posts: 2,402 Drives: slowly Rep Power: 40569	<3 Gear diff. Clutch diffs have a lot of setup involved how aggressive is yours set to be, it should be on the less or even least aggressive engagement setting for road courses. How are your stack springs, plates active, etc setup? Regardless there's no way you should be melting anything with a diff somethings defiantly wrong. ( Click to show/hide ) As for being fed up with the Z, there are very few cars that you can go from the dealer to the track with no more then a fluid change and be a great track car and non of them start at 30k. Suspension mods are one of the easiest mods to make your car worse, which is why I left mine for last. IMO this car only needs cooling, brakes, sticky tires, and a stiff front sway bar to make it a great starting track car. Elmo370z likes this. __________________ GTR TT 493Whp/431lbft, Ecutek, Southbend 6puck,Quaife, RPM RollBar 4Point, R888R, JRZ RSPro F(10R/10C) R(10R/6C) 1000f500r inlbs+150inlbs Tender, SPL everywhere.Full Specs

06-06-2018, 11:27 AM	#28 (permalink)
Justint5387 Base Member Join Date: Aug 2014 Location: Bay Area, CA Posts: 188 Drives: 2016 370z Silver 6MT Rep Power: 12	This sounds more like an install issue than a diff issue. A few clutch plates should not generate that much heat to melt a bushing. Sounds like the gears were working way too hard.

06-06-2018, 01:23 PM	#29 (permalink)
B&W_Evader Track Member Join Date: Aug 2011 Location: CA Posts: 972 Drives: slower than before Rep Power: 387	Yep, I did the 10x figure 8 break-in first thing. I figured if it was good for other LSDs it couldn't hurt. __________________ \|RIP\|6spd-sport\|OSG-LSD\|XP8\|RBF600\|Eibach Sways\|RE-71R\|FI-34Row\|Gen3-CAI\|Yaw P.S.\|

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