looking for an LSD

B.A.Q · 03-06-2011, 02:21 PM

I'm looking for an LSD ( Limited Slip Differential )

I noticed a lot of the track guy changed their stock LSD

anyone of you guys thinking of selling it !?

I'm phoenix

but i'm gonna spend my spring break in Denver if anyone over there has an LSD

spearfish25 · 03-06-2011, 04:22 PM

Given the work required to install the thing, you might as well buy a much better aftermarket one. While the stock sport LSD is OK for most people, the real track guys think they're $hit. If you're just daily driving, then one could argue you don't need a LSD at all. And if you need one, you're better off installing a good one. Go big or go home!

B.A.Q · 03-06-2011, 07:41 PM

Quote:

Originally Posted by spearfish25

Given the work required to install the thing, you might as well buy a much better aftermarket one. While the stock sport LSD is OK for most people, the real track guys think they're $hit. If you're just daily driving, then one could argue you don't need a LSD at all. And if you need one, you're better off installing a good one. Go big or go home!

is there a difference in torque or handling !?

Mike · 03-06-2011, 07:41 PM

but I also think I have heard its easier to put an aftermarket into a base unit, so a complete swap might be beneficial for him and the new recipient, as it would just be a bolt in for him.

Its on my list, but not just yet.

christian370z · 03-07-2011, 12:02 AM

All the aftermarket limited slip diffs are designed to bolt right into the pumpkin of the base open differential without needing anything else. That is part of the reason I chose not to get the sport package LSD as I have my eyes on Quaife personally for performance, durability, and drivability.

spearfish25 · 03-07-2011, 11:46 AM

So it's not a clean swap for an aftermarket option if you already have the sport LSD? What more does it entail then?

ChrisSlicks · 03-07-2011, 12:28 PM

Quote:

Originally Posted by spearfish25

So it's not a clean swap for an aftermarket option if you already have the sport LSD? What more does it entail then?

It is a clean swap - depending on what you get. You want to buy a aftermarket diff that has been designed as a replacement for the stock sport LSD. The Quaife unit was designed for the base model LSD and so to use that unit you would need the stub shafts from the base diff. Alex, since you are a track guy I would with the Carbonetics which will be a straight swap for the stock LSD.

B.A.Q · 03-07-2011, 02:43 PM

So are you all saying I should get the aftermarket LSD rather than the SportPKG LSD ??

I'm planing on going to the track to, so is there a big difference !? until now I couldn't find someone talking about the difference in the two differentials

Erik@RTTuning · 03-07-2011, 02:54 PM

I guess the decision would come down to the going rate of second hand sport differentials when compared to something nice that is better suited to track duty. For the labor involved you might be better off choosing a diff that is an upgrade over OEM.

ChrisSlicks · 03-07-2011, 03:12 PM

The sport model LSD is viscous, it is a design that is very durable on the street but becomes less effective (or ineffective) as the diff fluid temperatures rise which make it not very popular on track. It is also going to cost extra in parts thanks to requiring different stub shafts.

A unit like the Quaife is a mechanical torque sensing differential, it is going to direct torque bias to the axle that has the most grip up to the limit of the torque bias ratio. It is a straight swap for the base diff and still has great street manners and in also good on track provided you like to keep all your wheels on the ground

The other aftermarket differential option is a clutch type differential (like the Carbonetics). These units have clutches that come together under acceleration (power), and depending on configuration also potentially under deceleration (coast). The amount of lock up is dictated by the number of clutches inside the core. The pro's can rebuild the units to alter the amount of lockup they need for a given car or even a given track. The clutches will also stay locked if you go over a curb bump that gets one wheel airborne (provided you were on the power of course).

Bottom line is the Quaife is the best all around upgrade for the base. For the sport model the Carbonetics is probably your best bet.

ChrisSlicks · 03-07-2011, 03:14 PM

Quote:

Originally Posted by Erik@RTTuning

I guess the decision would come down to the going rate of second hand sport differentials when compared to something nice that is better suited to track duty. For the labor involved you might be better off choosing a diff that is an upgrade over OEM.

I'd agree. Although an option might be to swap the whole pumpkin with a sport owner that wants the base pumpkin to upgrade.

chuckd05 · 03-07-2011, 10:25 PM

sending you a PM

B.A.Q · 03-09-2011, 02:41 AM

up up up

03-06-2011, 02:21 PM	#1 (permalink)
B.A.Q Enthusiast Member Join Date: Feb 2011 Location: Phoenix,Az Posts: 302 Drives: Touring 370z Rep Power: 14	looking for an LSD I'm looking for an LSD ( Limited Slip Differential ) I noticed a lot of the track guy changed their stock LSD anyone of you guys thinking of selling it !? I'm phoenix but i'm gonna spend my spring break in Denver if anyone over there has an LSD Last edited by B.A.Q; 03-06-2011 at 02:30 PM.

03-06-2011, 04:22 PM	#2 (permalink)
spearfish25 A True Z Fanatic Join Date: Mar 2009 Location: Naples, FL Posts: 4,117 Drives: to work Rep Power: 1856	Given the work required to install the thing, you might as well buy a much better aftermarket one. While the stock sport LSD is OK for most people, the real track guys think they're $hit. If you're just daily driving, then one could argue you don't need a LSD at all. And if you need one, you're better off installing a good one. Go big or go home! __________________ 2013 Cadillac V-Wagon, RIP Z

03-06-2011, 07:41 PM	#4 (permalink)
Mike The370Z.com Sponsor Join Date: Jun 2009 Location: Loganville, GA Posts: 5,944 Drives: 370z Rep Power: 2185	but I also think I have heard its easier to put an aftermarket into a base unit, so a complete swap might be beneficial for him and the new recipient, as it would just be a bolt in for him. Its on my list, but not just yet. __________________ NISSAN: 75 280Z / 86 300ZX GLL /87 Sentra SE / 03 350Z / 23 Z Porsche: 93 968 / 23 Macan GTS / 93 968

03-07-2011, 12:02 AM	#5 (permalink)
christian370z A True Z Fanatic Join Date: Jul 2010 Location: Newport Beach Posts: 3,900 Drives: 2010 370Z/Saab 900se Rep Power: 431	All the aftermarket limited slip diffs are designed to bolt right into the pumpkin of the base open differential without needing anything else. That is part of the reason I chose not to get the sport package LSD as I have my eyes on Quaife personally for performance, durability, and drivability. __________________ -320whp / 259wftlbs- SP Rays -- RE-11s -- SpecialtyZ Tune -- Swift Springs -- Stillen 25R Oil Cooler -- Stillen G3 Intakes -- Berk HFCs -- F.I. 12" CBE -- Stillen Sway Bars -- Es14 Spring -- INGS+1 lip -- CF Spoiler -- GTR Start Button -- VLED Parking Lights -- PWJDM V2 shift knob

03-07-2011, 11:46 AM	#6 (permalink)
spearfish25 A True Z Fanatic Join Date: Mar 2009 Location: Naples, FL Posts: 4,117 Drives: to work Rep Power: 1856	So it's not a clean swap for an aftermarket option if you already have the sport LSD? What more does it entail then? __________________ 2013 Cadillac V-Wagon, RIP Z

03-07-2011, 02:43 PM	#8 (permalink)
B.A.Q Enthusiast Member Join Date: Feb 2011 Location: Phoenix,Az Posts: 302 Drives: Touring 370z Rep Power: 14	So are you all saying I should get the aftermarket LSD rather than the SportPKG LSD ?? I'm planing on going to the track to, so is there a big difference !? until now I couldn't find someone talking about the difference in the two differentials

03-07-2011, 02:54 PM	#9 (permalink)
Erik@RTTuning Base Member Join Date: Mar 2011 Location: Lansdale Posts: 236 Drives: 2000 MR2 Spyder Rep Power: 14	I guess the decision would come down to the going rate of second hand sport differentials when compared to something nice that is better suited to track duty. For the labor involved you might be better off choosing a diff that is an upgrade over OEM.

03-07-2011, 03:12 PM	#10 (permalink)
ChrisSlicks A True Z Fanatic Join Date: Mar 2009 Location: North East Posts: 6,203 Drives: 09 370Z Sport M6 Rep Power: 653	The sport model LSD is viscous, it is a design that is very durable on the street but becomes less effective (or ineffective) as the diff fluid temperatures rise which make it not very popular on track. It is also going to cost extra in parts thanks to requiring different stub shafts. A unit like the Quaife is a mechanical torque sensing differential, it is going to direct torque bias to the axle that has the most grip up to the limit of the torque bias ratio. It is a straight swap for the base diff and still has great street manners and in also good on track provided you like to keep all your wheels on the ground The other aftermarket differential option is a clutch type differential (like the Carbonetics). These units have clutches that come together under acceleration (power), and depending on configuration also potentially under deceleration (coast). The amount of lock up is dictated by the number of clutches inside the core. The pro's can rebuild the units to alter the amount of lockup they need for a given car or even a given track. The clutches will also stay locked if you go over a curb bump that gets one wheel airborne (provided you were on the power of course). Bottom line is the Quaife is the best all around upgrade for the base. For the sport model the Carbonetics is probably your best bet. __________________ Hotchkis ARB \| Stillen CAI \| Art Pipes \| Berk CBE \| Stillen AP Racing Brakes \| AE Performance Oil Cooler \| BC Racing ER Coilovers \| Doran Control Arms

03-07-2011, 10:25 PM	#12 (permalink)
chuckd05 A True Z Fanatic Join Date: Oct 2009 Location: NY Posts: 2,391 Drives: No longer a Z Rep Power: 19	sending you a PM __________________ 09 370Z 6M PW - FBO Best 1/4 mile = 12.926 @ 109 SOLD -- 08 BMW 135i - FBO 12.1@120mph SOLD -- white 09 e92 335 Coupe Mtech - 11.9 @ 119 :-)

03-09-2011, 02:41 AM	#13 (permalink)
B.A.Q Enthusiast Member Join Date: Feb 2011 Location: Phoenix,Az Posts: 302 Drives: Touring 370z Rep Power: 14	up up up