Jump to content
SAU Community

Differential Upgrade?

V35DRIVER
 Share

Recommended Posts

scathing Grand Master

scathing

Posted
Posted

I just installed a Tomei Technical Trax 2-Way with a 3.9:1 final drive.

I like the final drive. I'm not so sure about the high yaw clunking of the LSD itself, since my goal with the car was a streetable car that could be tracked.

I'd really like a Quaife, but it's well out of my price range.

V35DRIVER Enthusiast

V35DRIVER

Posted
  • Author
Posted (edited)

is your car auto or manual?

Mine is auto..... most people would tell not to bother... but i want exactly what you are after a streetable car that i can also take on the track....

Apart from the clunking... did you get the extra downforce power?

Edited by V35DRIVER
scathing Grand Master

scathing

Posted
Posted (edited)

Manual.

The rest of my car works for my goal. The only change I make for track days are the rims/tyres. Its not too noisy, its not crazy stiff, I've got a stock interior, the pads don't need heat to work.

As for the LSD, I haven't noticed much of a difference yet as I've not really opened the car up. When the rear breaks away its lost a lot of its progressiveness. It gets a lot more sideways a lot quicker, which was a bit interesting the first time it happened.

When I gave the throttle a prod around a roundabout in the wet on Tuesday it didn't break traction where it would have with the OEM VLSD.

I'll give it a couple of months of street driving, and at least 1-2 track days, before I make a final decision on whether I like it or not.

Edited by scathing
V35DRIVER Enthusiast

V35DRIVER

Posted
  • Author
Posted

Thanks for that info...

I think before i go the LSD i am going to go the cheaper option and get set of Selby's sway bars for extra downforce...

The guys down there (superior suspensions) say they have created a system which really makes a difference to the handling of the car......

When your heading out to the track next, let us know....it might be good to get a few vq35's going round...

scathing Grand Master

scathing

Posted
Posted

Sway bars are the single best handling upgrade for the car. I'm not sure about the V35, but on the Z33 the ride/handling compromise for the coilovers is almost spot on for a daily driver that only occasionally gets tracked once you do the bars.

Does your car come with the VLSD? If so, there's plenty to do before you upgrade it. Honestly, I didn't really need a new diff as the old one was still holding up OK. If I tried to slide, both wheels would light up. It was only around the tightest of hairpins that it would single peel.

My next definite track day is Circuit Club's 5th Year Anniversary track day at Wakefield - but it will probably be really busy.

V35DRIVER Enthusiast

V35DRIVER

Posted
  • Author
Posted
  scathing said:
Sway bars are the single best handling upgrade for the car. I'm not sure about the V35, but on the Z33 the ride/handling compromise for the coilovers is almost spot on for a daily driver that only occasionally gets tracked once you do the bars.

Does your car come with the VLSD? If so, there's plenty to do before you upgrade it. Honestly, I didn't really need a new diff as the old one was still holding up OK. If I tried to slide, both wheels would light up. It was only around the tightest of hairpins that it would single peel.

My next definite track day is Circuit Club's 5th Year Anniversary track day at Wakefield - but it will probably be really busy.

yeah it comes with the VLSD... im going to do the sway bars within the next few weeks... just got to get a spare moment.. im always on the go... ive also finally located a full manual 6speed box out of a Z... so also thinking about putting that into my V35... but before i do that - i want to test drive a 6speed v35 ...and see the difference.... if its major im doing it... if not then i will just leave it...

scathing Grand Master

scathing

Posted
Posted

The auto is a 5 speed, right? That means you'll be running a 3.2:1 final drive. If you do a gearbox swap without changing the diff ratio, you still won't see the acceleration of your manual brethren.

I always thought that if I was to go FI I'd run that 3.2:1 FD, but so far I haven't seen too many turbo owners in Australia looking at doing a swap. The only guys I've seen even consider it are in the States, making big power with built engines.

  • 3 months later...
GT350 Enthusiast

GT350

Posted
Posted
  pw350gt said:
Hi Guys sorry to bring up the Old threads.

Does the CPV35 Premium Auto comes with LSD? Some people said no but some people said it does come with VLSD. Kinda confused here. Mine is 2003.

cheers

Yer, I've brought this up before on this forum, I have an 03 prem auto coupe also, the story is all 5 speed autos are ''NOT'' fitted with VLSD's, anyone who has got it must be fitted with an after market Diff! Just jack the rear end up and turn the hoop's to find out. Forgot to mention also, all auto 5/AT 350z's ''ARE'' fitted with VLSD's as STD were the V35's are not, bit strange when both run the same drive train and the same design platform, maybe Nissan has some reason for it, anyone else got some answers.
scathing Grand Master

scathing

Posted
Posted
  GT350 said:
Just jack the rear end up and turn the hoop's to find out.

Does this trick work with VLSDs? I just figured the fluid was so slow to react that a hand-turned wheel couldn't make it harden.

I never tried it with the stock VLSD so I wouldn't know.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • PranK
      Diy - How To Repair R33 Air Mix/blend Actuator

      By PranK · Posted

      I have copied the images in the original post from photobucket to the SAU servers to make sure they stay available.
    • JV7
      Diy - How To Repair R33 Air Mix/blend Actuator

      By JV7 · Posted

      Mate you saved be from dying in the Perth summer. AC wasn't changing direction and just going into diagnostics mode fixed it. You're a legend and I would shout you a beer if I could!
    • Dose Pipe Sutututu
      I need more than help to finish my R33

      By Dose Pipe Sutututu · Posted

      Unfortunately effort gone to waste, you will have substantial issues with how the manifold and wastegate have been integrated. You would be so much better off with a modified stock manifold like this: https://hypergearturbos.com/product/rb25detexgatedmanifold/   OR literally just getting a off the shelf Sinco or 6Boost manifold as myself and others have mentioned.  
    • GTSBoy
      Mistakes were made, my R34 Story

      By GTSBoy · Posted

      Noice. Mostly.
    • Kinkstaah
      Mistakes were made, my R34 Story

      By Kinkstaah · Posted

      Yuck. But it's kinda the same principle, moving timing around to make car run bad but sound good.... I went for a more spirited tuning drive to iron out a few things. Car no longer stalls, and it loved to dip RPM low when you clutch in. After tuning this (and the 4-5 tables that HPTuners/LS1 OEM ECU wants for idle air correction) it's now behaving somewhat normal. All expected because there's a new TB, new Intake manifold and that new TB which is 102mm vs 78... has an entirely different IAC passage which is smaller because ????? Unfortunately at this point I went to make further fine tuning changes to avoid it flaring up, you know... _tuning_ the HPTuners dongle died. Well to be more accurate - The USB cable died in a fashion that anyone who has ever charged a phone will recognize. After the app demanding I resync it 50 or so times (which all 'succeeded' but all failed) the device does not want to sync and I've logged a ticket with support to see if it's fixable. US Support said it was a 'storage issue' but after removing the SD card inside it and formatting it/fixing it the issue does persist. Unfortunately usually the fix is "Turn in your old dongle and pay $700 for the upgraded one" it's cheaper because I get some free licence credits I unfortunately don't need. However I'm 10 minutes down the road from HP Tuners AUS/VCM so at least I won't need to post it, and logged a new ticket for support over here. Definitely drives different. My SOTP dyno believes it's probably making 310-320kw instead of the 280 before.  It scrambles for traction a little now whereas it previously different. It drives like a bigger cam car up top even though the cam is smaller, likely due to the cam not being advanced 6 degrees. The timing is deliberately low and the fuel is very rich so who knows if this will improve on the dyno. It may, imperceptably. Also funny is removing the pineapples definitely makes the car squat more and axle tramp less. So this behavior of having more top end, squatting more, and scrabbling for traction more makes me think = more power. But I could have just been sitting on the threshold of that kind of behavior before. Time will tell if my butt dyno is calibrated right. I need the exhaust leaks fixed before dyno tune for obvious AFR related reasons - I repositioned the pipes but I'm not confident it's fully sealed even if it is better. At least the car does drive around while I cannot tweak/tune it for now. And I have aircon again. medium success!
×
×
  • Create New...