Weight difference GT3 vs Cup car
Weight difference GT3 vs Cup car
Author
Discussion

boxerTen

Original Poster:

508 posts

234 months

Sunday 15th April 2007
quotequote all
Does anyone know where the 250kg difference in weight between the GT3 Cup and vanilla GT3 comes from? Obviously the Cup cars are missing interior trim, a passenger seat, etc, but surely that isn't 250kg worth? Is it?

Robin C

89 posts

312 months

Sunday 15th April 2007
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Plus doors, plastic windows, wheels, exhaust, rear deck, steering wheel, airbags, cooling fan, wheel liners...

Robin C

nbetts

1,455 posts

259 months

Sunday 15th April 2007
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Electric Power Steering, not hydraulic... saves a few kilos as well.

herfer

84 posts

304 months

Sunday 15th April 2007
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aircon, heater box. all the crap under the front bonnet, small battery?, radio.......

stockholm996tt

11 posts

234 months

Monday 16th April 2007
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Hi,

I am new to this forum, and thought that I would share some insight.

The 997 Cup is not 250 kg heavier than the 997 GT3! You have to take into account that the weight of the street car 997 GT3 includes all fluids and a full 64 l tank (not 90 l). The weight of the 997 Cup is a dry weight without any fluids, gas etc. When I did the calculation together with a Porsche official the correct difference between a GT3 RS (in its lowest possible weight configuration without AC and with PCCBs) and a Cup is about 80 kg, which is pretty amazing!

steve rance

5,453 posts

261 months

Monday 16th April 2007
quotequote all
boxerTen said:
Does anyone know where the 250kg difference in weight between the GT3 Cup and vanilla GT3 comes from? Obviously the Cup cars are missing interior trim, a passenger seat, etc, but surely that isn't 250kg worth? Is it?



My 996 cup is 1315KG with Driver,race suit, helmet feul and 35kg of balast (to meet porsche open regs). I weigh in at 95kg in race gear so the car is 1185KG with all lubricants and coolants and approx 1/4 tank of feul. This is approximately 200kg lighter than a 996GT3RS with aircon and front cage fitted. I would be stunned if the differential between a 2007 cup car and 997GT3RS was not very similar especially as the 997 cup car has electric power steering which saves 30kg on the standard system

Steve R

DanH

12,287 posts

290 months

Monday 16th April 2007
quotequote all
steve rance said:
I weigh in at 95kg in race gear


Oh do you now Mr 'lives in a glass house'?!?!?!

stockholm996tt

11 posts

234 months

Monday 16th April 2007
quotequote all
Let's see if we can solve this:

The offically stated dry weight of the 997 Cup is 1140 kg (with steel brakes)

The offically stated weight of the 997 GT3 RS is 1375 kg (in its lowest possible spec with no AC, PCCB brakes).

The difference between the offical weights are 235 kg.

Now lets try see if we can compare "apples with apples":

The RS weight includes:
- 64 l of fuel (not 90 l!)
- cooling fluid 25 litres (?)
- brake fluid ?
- other fluids ?
- what else have I missed? tools etc?

Hmmm... How much could these non-comparables sum up to? 100 kg? In that case the difference seems to be more in the region of 135 kg between the two cars.

steve rance

5,453 posts

261 months

Tuesday 17th April 2007
quotequote all
DanH said:
steve rance said:
I weigh in at 95kg in race gear


Oh do you now Mr 'lives in a glass house'?!?!?!




And i'm 6ft 2 and Train at the gym 5 times a week

Lardy boy...

DanH

12,287 posts

290 months

Tuesday 17th April 2007
quotequote all
steve rance said:
DanH said:
steve rance said:
I weigh in at 95kg in race gear


Oh do you now Mr 'lives in a glass house'?!?!?!




And i'm 6ft 2 and Train at the gym 5 times a week

Lardy boy...



Not sure you realise this, but training at the gym doesn't involve sitting at the juice bar eating all the pastries...

Talk to me when you've lost 10kg!




Edited by DanH on Tuesday 17th April 13:39

steve rance

5,453 posts

261 months

Tuesday 17th April 2007
quotequote all
DanH said:
steve rance said:
DanH said:
steve rance said:
I weigh in at 95kg in race gear


Oh do you now Mr 'lives in a glass house'?!?!?!




And i'm 6ft 2 and Train at the gym 5 times a week

Lardy boy...



Not sure you realise this, but training at the gym doesn't involve sitting at the juice bar eating all the pastries...

Talk to me when you've lost 10kg!




Edited by DanH on Tuesday 17th April 13:39


Nope, it involves 10k runs, and lots of free weights. I played Rugby for Eastern Counties before I raced cars but i've I kept training ever since.

See you at the gym some time lardy Boy, I'll buy you a pie..

Steve R

935

250 posts

251 months

Tuesday 17th April 2007
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I aspire to the Pete Morris training school. Pies, beer, beer , more beer and pies. The only "Jim" we use is in Dublin!!!!
Only half joking really!!

Cheers,

Richard.

Ninemeister

1,146 posts

288 months

Tuesday 17th April 2007
quotequote all
PM: "Another pie & pint anyone?"

RC: "Yeah, why not, we can always turn the boost up....."

CB: "It's alright for you with two turbos to play with, I'm on a diet. So that's three pints, two pies and a bag of crisps then Pete."

boxerTen

Original Poster:

508 posts

234 months

Tuesday 17th April 2007
quotequote all
Thanks for your replies chaps ... the next question has to be ... how much of the lightweight cup car bits can be applied to the road car? (If the electric power steering is 30kg lighter why on earth hasn't the road car got it by default? - is it made of gold or something?)