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R34 Gtr Or R34 Gtr Vspec

r0bstr

By r0bstr,
in R Series (R30, R31, R32, R33, R34)

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r0bstr Rookie

r0bstr

Posted
Posted

Hi All,

I'm quite new to this scene and now in the market for a R34 GTR. I've found the perfect GTR but unfortunately it's not a V-Spec...

Due to this vehicle being highly modified, the only thing left that matters is it has the standard mechanical LSD.

Should I steer away from this particular R34 GTR due to this fact?

FYI - It has approximately 700hp@engine and 550awhp.

Would like some opinions if it matters, if having the active LSD makes handling better, what the advantages/disadvantages are, etc..

Many thanks!

Rob.

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https://www.sau.com.au/forums/topic/379872-r34-gtr-or-r34-gtr-vspec/
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Count Grantleyish Grand Master

Count Grantleyish

Posted
Posted

Having standard mechanical LSD already in the car makes it easier to maintain over active LSD(extra fluids, sensors etc)

If you really want extra grip, whack in 1.5 or 2 way diff - if having non V-Spec means installation is as simple as taking the centre diff out and swap over with aftermarket item - with A-LSD you'll need to find non A-LSD diff cover anyway.

So you shouldn't walk away from this car just cause of LSD as you have said it's modified (non V-Spec and V-Spec makes no difference whilst modified really).

All the best with the purchase, hope it's all good with the car.

CrimsonLey Rising Star

CrimsonLey

Posted
Posted

Count is correct. stock vs stock. I would take the V-spec.

Modified cars are different. If the modified car suits you then purchase it. You'll more likely save money that way.

You can always sell the modified parts and revert it to stock or even purchase the V spec parts and have a sort of stock GTR with V spec upgrades, lol.

r0bstr Rookie

r0bstr

Posted
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Posted

Thanks for the advice fellas.

I was under the impression with active LSD it has the ability to transfer power to the back wheels/front wheels from side to side as opposed to the mechanical LSD which can transfer from back to front only.

Any other advice based on this comment? :)

Cheers again!

(OO)SKYLINE(OO) Grand Master

(OO)SKYLINE(OO)

Posted
Posted

Thanks for the advice fellas.

I was under the impression with active LSD it has the ability to transfer power to the back wheels/front wheels from side to side as opposed to the mechanical LSD which can transfer from back to front only.

Any other advice based on this comment? :)

Cheers again!

What is an A-LSD?

The diff is controlled via an ECU in the boot next to the HICAS ECU.

The ECU triggers a hydraulic pump that pumps a hydraulic fluid into the diff to lock it up when required.

It does this by observing the behaviour of the wheels and when it detects that one wheel has broken traction it will send power to the other wheel to compensate and keep maximum traction.

So in theory it is ment to behave like an open wheeled diff all the time and behave like a locked diff when needed.

In theory this is great however it doesn't always go according to plan.

The problem is the response time.

When a wheel starts losing traction the diff should instantly recognise it and go into action instantly without you even noticing. This would give perfect traction. The thing is, this doesn't happen.

The single wheel will break loose and in certain situations the diff will take ages to send power to the other wheel - sometimes not at all.

This causes very unpredictable "tank slaps" (Speed Wobble) when trying to go straight or when trying to slide.

- http://www.skylinesa...sd-information/

This might have been the case for the R33 GTR and Nissan might have improved it with the R34 GTR or could have stayed the same.

The theory still stands but in reality, it's different story.

GDZ-14R Rising Star

GDZ-14R

Posted
Posted

I own a non V-Spec 34 with 340awkw (no idea what that equates to in hp), and the extreme amount of traction actually makes it a lil boring... Wait till you push it a lil and you will find how grippy these mofo's are. The helical diff in the non V-Spec is actually a huge improvement over the viscous units, they promote better traction and keep the rear a lot straighter whilst wheelspinning. I had mine in rwd mode for a couple of weeks after a dyno run, even with 275's you really begin to appreciate what the 4wd system does

I have a later model (01-02), which means that i get the sexy black interior, better coloured brush aluminium console, alloy pedals, and white dials. The 2nd gen R34 GTR is definitely preferable to the 1st (arguably the 1st gen vspec too). You will eventually seek your own stiffer suspension, bigger rear brakes, and diffusers that you miss out on. VSpec II's are still very expensive in Aus.

R31Nismoid Grand Master

R31Nismoid

Posted
Posted

455rwhp you mean. :merli:

Not sure if the R34 is Vspec is the same - but i know it's a problem on the R33 Vspec.

What i mean by that is you cannot rebuild the A-LSD easily.

I need a rear LSD for my R33 Vspec as the A-LSD is shagged/playing up, from what I've found out i need basically a R33 GTR NON-Vspec housing and then put the Nismo diff (1.5) centre into that as the shafts or something is a different size between the A-LSD and LSD versions.

Not saying A-LSD is bad, it's taken a hiding in my car without a doubt. It's just a problem when it needs replacement.

So if the R34 is the same as the R33, then this will be a problem SHOULD the A-LSD fail. Otherwise it might well be fine for 5 years :)

GTR-N1 Grand Master

GTR-N1

Posted
Posted

I've owned both ...

* Non V-Spec R34 GT-R and a...

* V-Spec II R34 GT-R

...Rob.

And I wouldn't be put off one bit by the mechanical LSD.

Here we are - and currently F/S...

http://www.skylinesaustralia.com/forums/topic/379812-matt-and-terrys-black-r34-gt-r-for-sale/

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