GT1 WC and balance of performance

rob21 · 19 Apr 2010, 12:02 (Ref:2675753)

Hey,

Today I was trying to find results of balance of performace of the GT1 cars but I didn´t.
I mean weights of the cars, air restrictors dimmensions and rear wings dimmensions.Can anybody help?
Thanks.

mirkob · 19 Apr 2010, 13:54 (Ref:2675838)

Corvette and Aston Martin have same air restictors: 31,2 mm
(according endurance-info.com)

I read something about the weights on the same site, but I cant find now :-(

Yakuncha · 19 Apr 2010, 14:43 (Ref:2675888)

Quote:

Originally Posted by mirkob

Corvette and Aston Martin have same air restictors: 31,2 mm
(according endurance-info.com)

I read something about the weights on the same site, but I cant find now :-(

R35 - 30kg http://www.sumopowergt.co.uk/latest-news

Read the Corvette and MC12 have 10kg, but the penalty for the Vettes was down to the weights position in the car - didnt stop it from being competitive though, unlike the Nissan

Tim the Grey · 21 Apr 2010, 08:48 (Ref:2677165)

I can see a bit more weight heading Corvette's way, TBH. They FLEW at Yas...
I can see SRO looking at penalising Grosjean in some way. He seems to be 2 or 3 seconds a lap better than just about anyone else...

How do you restrict a driver? Blinkers? Intake restrictors? Lead lined race suit?

duke_toaster · 21 Apr 2010, 21:20 (Ref:2677558)

That is a challenge, they would presumably have to bring in some driver grading system. It would probably result in playing around with the weights.

Purist · 21 Apr 2010, 23:35 (Ref:2677609)

I'd give the V12 cars just a bit more power. The Nissans could use more grunt and less weight, though how much, I'm not sure.

However, we should probably see how Silverstone goes before really coming to a verdict on this stuff, except perhaps for that the Nissans seem slightly off compared to the other cars.

broadrun96 · 22 Apr 2010, 00:39 (Ref:2677632)

What do the GT1 Nissans run under the hood? Race-prepped street engine or the V8 I think I saw they run in Japan?

Fogelhund · 22 Apr 2010, 04:03 (Ref:2677661)

Quote:

Originally Posted by broadrun96

What do the GT1 Nissans run under the hood? Race-prepped street engine or the V8 I think I saw they run in Japan?

They run the V8 that they used to use in Super GT.

Yakuncha · 22 Apr 2010, 08:41 (Ref:2677736)

Quote:

Originally Posted by Fogelhund

They run the V8 that they used to use in Super GT.

No they dont -

GT1 uses a VK56DE, 5.5L production V8 as fitted to the Nissan Titan,Armada,Pathfinder,Infiniti QX and other USA Nissans - http://en.wikipedia.org/wiki/Nissan_VK_engine#VK56DE

Super GT uses a VK45DE, 4.5L production V8 fitted to the Nissan Fuga,President and Infiniti M45 - http://en.wikipedia.org/wiki/Nissan_VK_engine#VK45DE

Tim the Grey · 22 Apr 2010, 08:57 (Ref:2677742)

Someone needs to get out more!

Yakuncha · 22 Apr 2010, 09:09 (Ref:2677750)

Quote:

Originally Posted by Tim the Grey

Someone needs to get out more!

Or just someone likes to show that they are informed and can prove they are not talking rubbish?

Also for 2010 the Super GT GTR uses the Nissan VRH34A, a purpose built racing engine, 3.4L V8

Mopar · 22 Apr 2010, 10:08 (Ref:2677777)

The GT-R was always going to be pegged back more than the other cars as it is the Benchmark for the New rules and raced last season. It would not have made sense to have the car run at it's full potential as it's pretty much the only car that has been purpose built to the new Regulation with factory involvement. The cars will be equalised through out the season which will cause much annoyance as we will never see the real pace of the cars but the racing should be entertaining so its swings and roundabouts.

Fogelhund · 22 Apr 2010, 11:57 (Ref:2677815)

Quote:

Originally Posted by Yakuncha

No they dont -

GT1 uses a VK56DE, 5.5L production V8 as fitted to the Nissan Titan,Armada,Pathfinder,Infiniti QX and other USA Nissans - http://en.wikipedia.org/wiki/Nissan_VK_engine#VK56DE

Super GT uses a VK45DE, 4.5L production V8 fitted to the Nissan Fuga,President and Infiniti M45 - http://en.wikipedia.org/wiki/Nissan_VK_engine#VK45DE

Call it what you want. The guys at NISMO specifically stated it was derived from the Super GT engine. Maybe the NISMO guys don't know what they are talking about?

Yakuncha · 22 Apr 2010, 14:00 (Ref:2677868)

Quote:

Originally Posted by Fogelhund

Call it what you want. The guys at NISMO specifically stated it was derived from the Super GT engine. Maybe the NISMO guys don't know what they are talking about?

Where did they say it then?

Félix · 22 Apr 2010, 15:27 (Ref:2677904)

VK - VK... same basic engine probably. I think they played around with the size of it in Super GT. The heads and all probably benefit from common development.

Fogelhund · 22 Apr 2010, 16:52 (Ref:2677935)

Quote:

Originally Posted by Yakuncha

Where did they say it then?

When I talked to them.

Yakuncha · 23 Apr 2010, 11:18 (Ref:2678366)

Quote:

Originally Posted by Fogelhund

When I talked to them.

Whatever

Anyway it looks like there might be a boycott by Nissan http://www.autosport.com/news/report.php/id/83111

**joeb** · 23 Apr 2010, 14:05 (Ref:2678445)

Quote:

Originally Posted by Yakuncha

Whatever

Anyway it looks like there might be a boycott by Nissan http://www.autosport.com/news/report.php/id/83111

Damn, good for Nissan I guess. Sounds like the equalization could have been done better.

helgi · 23 Apr 2010, 19:30 (Ref:2678658)

It could have been done better without any equalization.

Birddog07 · 24 Apr 2010, 07:45 (Ref:2678869)

Whatever engine Nissan has, it is a V8 and it sounds very out of place. Needs a straight 6.

Mike E · 24 Apr 2010, 09:40 (Ref:2678914)

I had rather hoped it would run with a version of the production engine, ie a twin turbo 3.8 litre V6. Would have meant a bit more variety on the grid and would have been more in keeping with the spirit of a series which is supposedly for production based vehicles.

Birddog07 · 24 Apr 2010, 12:19 (Ref:2678961)

Definatly, IMO, all GT cars should use production engines. They all are production based cars, ya know?

Fogelhund · 24 Apr 2010, 17:57 (Ref:2679043)

Quote:

Originally Posted by Birddog07

Definatly, IMO, all GT cars should use production engines. They all are production based cars, ya know?

Of course, the cars should all be current (real) production cars too... but

ger80 · 24 Apr 2010, 18:30 (Ref:2679052)

... we would have 12 cars in the GT1 WC - and no car build to the new regs

JAG · 24 Apr 2010, 18:57 (Ref:2679061)

Quote:

Originally Posted by Mike E

I had rather hoped it would run with a version of the production engine, ie a twin turbo 3.8 litre V6. Would have meant a bit more variety on the grid and would have been more in keeping with the spirit of a series which is supposedly for production based vehicles.

I don't mind Nissan ditching the 4wd system, but the engine is the heart of the car, running a V8 means it bears no relation to the road car.

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