Would A Track/race Gtr Be Faster With No 4Wd?

[bigmikespec]

Oh man, first time someone has given me a proper forum insult "umad"... brilliant; cheers for the quote though champ.

Thanks Brad was waiting for you to chime in... oh and mate can you email me still keen for that sump!!!!! Getting drawing of my custom designed pump, will send through details for your interest.

Was the reason the Japanese GT cars went with RWD platform for their GTR's to do with rules or for the reliability, weight improvements?

Edited November 11, 2011 by bigmikespec

[Victory]

I am approaching this from the opposite direction R33 GTS-T to GTR running gear.

At this point I have a GTR dash, seats and trim installed.

I am currently building a full GTR cradle and diff to drop in with Bilstein PSS9 shocks for the December track day.

I have modified GTR Bilstein PSS9's to fit the GTS-T front suspension and retain the correct ride height and adjustability.

I also have all of the GTR additional braces for the floor, behind the motor and inside the boot to stiffen up the chassis.

Next on the list is a full set of GTR Brembo brakes to complete the running gear.

If I really start to get serious I also have a full GTR front (guards, bonnet, front bar, reo, grille etc) that I had painted to match the car when it was resprayed packed away in the shed.

I hope to have the handling and performance of a GTR, with the running costs of a GTS-T and lap times somewhere between the two.

[R-PWR]

^isn't it easier to just buy a gtr considering how damn cheap they are.

[bigmikespec]

Hey Charles, I have the PSS9's coilovers too they are a good thing.

[mad082]

Oh man, first time someone has given me a proper forum insult "umad"... brilliant; cheers for the quote though champ.

Thanks Brad was waiting for you to chime in... oh and mate can you email me still keen for that sump!!!!! Getting drawing of my custom designed pump, will send through details for your interest.

Was the reason the Japanese GT cars went with RWD platform for their GTR's to do with rules or for the reliability, weight improvements?

japanese GT cars have set specifications, like pretty much every other racing category. that is why some of the GTRs were rwd. it is also the same reason the R35 GTR's run in rwd and are powered by a 3.4L V8

[NISMO]

^yup

R32 GTR's were always run in awd and spanked everything which is why the series moved to rwd, to even out the playing field. I'd say though that the spanking at the time of the 32's was more to do with the fact that the cars were so far advanced in all aspects compared to the rest of the field, and not just cause they had awd.

It's actually pretty intersting though that most categories make awd cars convert to rwd to even things up?? Maybe your answer is right there

[zebra]

japanese GT cars have set specifications, like pretty much every other racing category. that is why some of the GTRs were rwd. it is also the same reason the R35 GTR's run in rwd and are powered by a 5.6L V8

fyp

[Risking]

R32's raced under group A regulations nothing even remotely similar to the current GT categories.......

What current categories (defining most not just one or two) actually require RWD converted cars.

[zebra]

What current categories (defining most not just one or two) actually require RWD converted cars.

NASCAR makes Toyota turn a camry from FWD to RWD and run a copy of the Yates 357 Windsor lol

[zebra]

Been here done most of that......

My old R32 GTR which was raced not just tracked had a terrible issue smashing front diffs off the grid.

I'd get the first race down and the rest of the weekend would be spent with a crownwheel floating around in the front diff.

The car would be very difficult to drive when the front diff would first let go. After some chassis work to make livable I would end up leaving the front diff broken for the rest of the weekends

Nothing else would change just no front diff.

Perfect example of why brad should keep using front diff's

white GTR front row of the grid

[NISMO]

R32's raced under group A regulations nothing even remotely similar to the current GT categories.......

What current categories (defining most not just one or two) actually require RWD converted cars.

Obviously not categories for us here, but the ones i was thinking of - GT1, Super GT, JGTC (not sure 33's, but 34's were rwd) DTM, Sport Sedans (i think)

[ydr030]

Perfect example of why brad should keep using front diff's

white GTR front row of the grid

seen that launch allot better, that gtr won powercruise of street drag racing not to long ago, also does mad 4 wheel hellis

[Risking]

seen that launch allot better, that gtr won powercruise of street drag racing not to long ago, also does mad 4 wheel hellis

I've actually launched that car alot better I'd agree.

As for winning some drag race I doubt it. The car was retired after that race meeting and hasn't turned a wheel since.

Infact I built the car and it never even seen a drag strip during my ownership.

4wd hellis from that car I highly doubt too, it ran a 330 slick front and rear that cost more than most peoples rims and tires put together.

Edited November 14, 2011 by Risking

[r33_racer]

330 wide dunlops?? They are very fricken exxy!

[MBS206]

330 wide dunlops?? They are very fricken exxy!

Even more expensive when they're probably the cause of exploding front diffs... Just saying Brad...

[Risking]

Diff explosions were more caused by the transfer case experiments.

We could make a diff survive during qualifying due to the rolling starts, the shock loading put onto the tiny diff from the transfer was doing the damage. The failures were almost always stripped crown wheel teeth.

It didn't matter if the car had small AO48's or dunlop's michellins etc you had to slowly feed the power to the front from a standing start.

Factory transfer case problem fixed but car slower.....

[r33_racer]

It seems that a GTR in rwd form, purpose built that way would more then likely be better then a straight gtst. Purely due to the car having a better all round setup from factory. Slightly wider track, provision to run bigger wheels/tires which is quite important. This is severely limiting in a gtst. The most obvious one being the stance of the gtr makes it looks a hell of alot tougher then a gtst!

But in the end, if you have enough money you can make any car quick or quicker then your competitors, then you just need the skill to drive it. So eitherway is achieveable, Comes down more so to whats going to give more benefits for the least amount spent on it.

[Risking]

I'm currently building myself a RWD R34.

Might as well see how it goes.

[bigmikespec]

It seems that a GTR in rwd form, purpose built that way would more then likely be better then a straight gtst. Purely due to the car having a better all round setup from factory. Slightly wider track, provision to run bigger wheels/tires which is quite important. This is severely limiting in a gtst. The most obvious one being the stance of the gtr makes it looks a hell of alot tougher then a gtst!

But in the end, if you have enough money you can make any car quick or quicker then your competitors, then you just need the skill to drive it. So eitherway is achieveable, Comes down more so to whats going to give more benefits for the least amount spent on it.

That is what I am thinking Mike.

It is a lot of weight and cost (from an initial stand point and also ongoing maintenance) to remove the front diff and transfer case and all associated components. Will make the dry sump pan easy too.

Also, instead of spending $10k on a PPG dog box you could spend a touch more and get yourself a refreshed used Holinger.

You know "guys like us" dont have enough money to make any car quicker than competitors

[zebra]

you would have to weigh up...whether it is worth buying a GTR for over 20k prob 25k then spending all the coin working on it to be rwd.

or buy a 33 gtst for 4k, with a cage say 7k, GTR front guards for a few hundred, fiberglass rear guards, chuck a RB25/30 in it + your hollinger

and you have a car that will be so close to what you want to do you would have to be Michael Shumacher to tell the difference is chassis rigidity

and it wouldnt cost much more than buying a Standard 33 R to begin with. then spend the 20k saved on not buying a GTR on some of Brads trick suspension bits and a dry sump setup.

its what I would do given the coin