I have '03 G35 Sedan with 6MT having a problem in traction on track day and snow drive. Anyone knows a good way to add LSD to my car? Is G35 coupe or 350z VLSD compatible with G35 sedan? I would appreciate your advice.

 

i have a 03 coupe auto and got mine from a wrecked 03 6mt z.but make sure you do not get 1 from a 05 and up ,it will not work.the companion flanges are different.the pumpkins are interchangeable with no extra parts needed.

 

You have 3 good options. You can swap out your pumpkin for one off a 03-04 6MT Z/G that had the VLSD factory installed. Best bet is to get one from a junkyard, but you might have mixed results in finding one in good condition. Otherwise, look at the Nismo LSD because that includes the axle stubs and all the parts you require for the install. But the clicking / popping of the clutch style LSD might not be what you want in a sedan. So with that in mind, also consider the Quaife, its a drop-in for your open diff rear, but its $1500 for just the unit.

 

Pricey, but sweeeet!

 

So true! Consider the 3 options I listed as increasing price, but also increasing effectiveness. Quaife is hands down the best option for a street-driven vehicle if you want seemless operation but incredible effectiveness. I've got one and I'd never go back to anything else.

 

Where can you find the Quaife one???

 

Got mine from Forged Internals

 

If you're talking about drag racing, then the VLSD won't help. The response time and torque split of the VLSDs is such that they won't help 60 foot times. As for snow driving, it really won't help either and anyways the electronic traction control and stability control should take care of that. I know that my 03 5AT with an open diff doesn't have problems in the white stuff. Yes, it spins a little and tries to slide, but the factory nannies keep the car in line. What is the quality of your tires? Hopefully you're not trying to drive in the snow with summer rated rubber.

The only real advantage of the LSD units is for track racing with slow speed and off-camber turns. That's where the LSD pays off. However, you can get by fine with an open diff if you run track focused rubber.