Skyline GTR breaks Sandown Marque Lap Record

[GTRgeoff]

Hmmmm. My mistake. I was going off NDSOC club criteria, which allows a few non-marque cars including GTR's, although GTSt's are all excluded......interesting that all 911's are included though.

Here is the MSCA current competition page for Vic.

http://www.cm510.com/msca/

NRB, while your putting new pads in, make sure you bleed the brake fluid, or even better, just replace it all with something like Motul DOT 5.1. Brake bleeding is not hard.

[Snowman]

SydneyKid - Ben is now using Bridgestone RE55's and he swears by them. He claims they give him at least a second over anything else he's used before.

[Sydneykid]

Hmmmm. My mistake. I was  going off NDSOC club criteria, which allows a few non-marque cars including GTR's, although GTSt's are all excluded......interesting that all 911's are included though.

I have seen that a couple of times Geoff, I think it must be the old "GTR's were sold here" rubbish. After all it was only R32 GTR's, but they seem to ignore that and accept R33 GTR's and R34 GTR's as well. Snobbery keeps the "poor man's" GTST out though. I just enter those sorts of events as;

Make = Nissan

Model = Skyline R32

Don't mention GTR or GTST, they just assume it's a GTR and you are in.

[Sydneykid]

SydneyKid - Ben is now using Bridgestone RE55's and he swears by them. He claims they give him at least a second over anything else he's used before.

Is he still running those slick tyre spring rates, 700 lbs in the front and 500 lbs in the rear?

[Duncan]

SydneyKid - Ben is now using Bridgestone RE55's and he swears by them. He claims they give him at least a second over anything else he's used before.

I definately agree with that....but on the down side they're dead in literally 20 laps. Velllllly soft tyres. We ran em at Dutton Rally last year, took a second off our dunlop formula r times but they were showing canvas after the 20 events

[GTRgeoff]

Yes, even the GTS was listed as a GTR on the timesheets. Made it hard to determine who was doing what lap time.

I was happy enough though to do faster times than one of the 968cs cars on semi comp rubber with Targa spec preparation. the owner was parke 2 bays away and was shocked at the acceleration I had on standard computer. Pity about the limiter though. PFC to the rescue in 2 pay days

Maserati club page for those interested http://www.maserati.org.au/Quick_access.htm

no times yet.

[benjiman74]

Duncan - i believe the re55s comes in two compounds

Sydney - the spring rates are in excess of 700lb fr / 500lb rear. How does this tie in with "the whiteline philosophy", ie dont use greater than 250lb rears even on a race car

[Snowman]

Is he still running those slick tyre spring rates, 700 lbs in the front and 500 lbs in the rear?

I honestly don't know sorry. But I'm guessing you also don't know about the new wing then either Sydneykid. He says this has made a big difference as well!

[Laurence]

I guess in a 4WD you don't really need as much pitch.

Also if you are using the springs to increase the roll stiffness rather than sway bars you will end up with a very stiff setup. Just look at the GTP cars, I am not sure now but previously you weren't allowed to change the sway bars so they were all sprung to the shiznit

[NRB]

It's easy NRB, get the corner speed up and you won't need to use the brakes so much.  We use DBA slotted rotors with Hawke pads in the Blue compound, still able to lock the wheels at the end of a 12 lapper.  Tyres are the limit of our braking not the brakes themselves.

You gotta get out there and get the adrenalin happening, it's good for the soul.

The last track day I ran RB74 fronts and Comp2 rears. Unfortunately I also had crappy "compliance" fluid, DOT4 I think. Since then I've replaced my fluid with Motul DOT5.1 and I've got some Galfer front pads for track days. I found with the crud fluid I could only string together 2 lapsbefore fade set in. I wish R32 brakes were bigger (mine's non VSpec). I'm also running a lot more power since that day!

NRB, while your putting new pads in, make sure you bleed the brake fluid, or even better, just replace it all with something like Motul DOT 5.1. Brake bleeding is not hard.

Already done - see above. Thanks for advice though!

[GTRgeoff]

Looking forward to seeing you out there then :D:D

[NRB]

Looking forward to being out there; my usual track car is my mini. Although I love taking the mini on the track, it doesn't cut it for outright ass-twitching performance

[Sydneykid]

Sydney - the spring rates are in excess of 700lb fr / 500lb rear. How does this tie in with "the whiteline philosophy", ie dont use greater than 250lb rears even on a race car

Hi ben, as Gojira said, GTR's don't need to be as compliant in the rear as GTST's because of the 4wd. We have the same problem with production cars where we can't change the stabiliser bars or the anti dive or anti squat geometry, so we have to run mega spring rates. Plus we can't get enough positive caster under the regs and too much negative camber means it won't stop. For example we have an Integra with 1,700 lbs per inch rear springs. On the Improved Production Civic we run 700 lbs per inch rear springs, because we have changed the stabiliser bars and the suspension geometry plus it runs a lot of caster.

The mega spring rate philosophy is certainly not our preferred option. With similar tyres, the corner speed of the Improved Production car is much higher than the Production car but we have no choice under the regulations. Even the V8Dinosaur runs lower spring rates, despite weighing 30% more, than the Integra.

Hope that clarifies

[sillywet]

makes 1600's on the back of Porsches seem pretty stiff, even if they do have all the weight over the back

[RPMZ]

BTW........ Ben’s GTR did 59.2 at CALDER today in fairly poor conditions, as it rained a bit every hour. It was also one of the quietest cars there.