Gts -T Race Car Build - Ideas For Weight Reduction

[PM-R33]

Ahh very nice. Looks very aggressive!

[Risking]

I've corner weighed plenty of skylines.

Every one of them varies but on average an r33 gtst's come in around 58%front heavy

R33 GTR's are typically 62-65% front heavy.

Comparably a 32 gtst is 56-60% front and a GTR 58-62%.

Most of the cars I've done vary in trim level, cages, body mods etc so it's pretty hard to get an accurate average.

[PM-R33]

Cheers for that

So going off that 58%, say a R33 GTST weighed 1400kg, it would take moving around 112kg from the front to the rear of the vehicle to get close to a 50/50 weight distribution.

Or removing 224kg from the front to get close to a 50/50 weight distribution.

Or obviously a mixture of moving and removing.

Crazy. Makes you really see how front heavy they are.

[bigmikespec]

I've corner weighed plenty of skylines.

Every one of them varies but on average an r33 gtst's come in around 58%front heavy

R33 GTR's are typically 62-65% front heavy.

Comparably a 32 gtst is 56-60% front and a GTR 58-62%.

Most of the cars I've done vary in trim level, cages, body mods etc so it's pretty hard to get an accurate average.

Fairly standard R33 GTR Vspec

FR: 430kg

FL: 447kg

RR: 360.5kg

RL: 331kg

Total 1568.5kg

[Nee-san]

Cheers for that

So going off that 58%, say a R33 GTST weighed 1400kg, it would take moving around 112kg from the front to the rear of the vehicle to get close to a 50/50 weight distribution.

Or removing 224kg from the front to get close to a 50/50 weight distribution.

Or obviously a mixture of moving and removing.

Crazy. Makes you really see how front heavy they are.

Remounting stuff goes a long way to helping without actually removing that much weight from the car.

[Risking]

Moving weight around on a set if good scales has the greatest benifit.

Typically if building a car from scatch it will permanently be sitting on scales.

I have been doing an s15 recently which has always been on the scales so things can be located once and properly.

The height various components are mounted is just as important as their location if your worried about a front to rear center of gravity height and roll axis as well.

Corner weighting via ride heights with a purpose built race car should be done after the car is statically balanced with weight.

[Risking]

Mike was your car weighed with driver and full fluids?

Just curious

[BOZ22N]

Just for your info my r33 gtst stripped out and caged weighed in at 1374kg on the scales at EC. That is with a full tank of fuel and all factory body panels. I am very keen to get it down to the mid 1200's.

[Noddy]

height of components, this is a good start then?

[Nee-san]

Moving weight around on a set if good scales has the greatest benifit.

Typically if building a car from scatch it will permanently be sitting on scales.

I have been doing an s15 recently which has always been on the scales so things can be located once and properly.

The height various components are mounted is just as important as their location if your worried about a front to rear center of gravity height and roll axis as well.

Corner weighting via ride heights with a purpose built race car should be done after the car is statically balanced with weight.

[badhairdave]

height of components, this is a good start then?

As long as the counterweights don't hit the steering rack you're on a winner.

[Risking]

Ryan is that weight with the booster, pedals and everything else still in it or have you done a pedal box conversion

[BOZ22N]

Ryan is that weight with the booster, pedals and everything else still in it or have you done a pedal box conversion

Yep all factory booster and pedals etc

[bigmikespec]

Mike was your car weighed with driver and full fluids?

Just curious

Full fluids with 3/4 tank of fuel. No driver... would have been a lot worse we me in the driver seat, you have seen the state of me Brad, lol. I think if you could get at least 100-150kg of weight out of the R33 GTR in the front half of it it would make a lot of difference.

Good to chat with you Fineline, cheers mate.

[Noddy]

Just put mine on a set of corner weights. Striped interior and of stock loom. Driftek 17/9.5 GTR off with 235/45 Kumho V70A glass bonnet all other pannels std (Drivers door has no insides at all though) And 1/2 tank of fuel.

Cross 613kg 50.3%

Left 613 kg 50.3%

rear 511 kg 41.9%

LF 353kg RF 353kg

LR 260kg RR 251kg

Total 1217

I need to re do it with me in it yet, but is a starting Point.

I have 10kg to come out of the pas door and a set of light kevlar Guards to go on..... looking for 1280 full of fuel and with me on board.

Edited June 12, 2011 by Noddy

[Bourbon Boy]

I am also trying to put my car through the Jenny Craig program and this threads been great but this will be a silly question to most of you but where would I go to weigh my car? lol How much will it cost?

Also would taking out the side rear air bags be illegal for a road registered car?

Edited June 14, 2011 by Bourbon Boy

[PM-R33]

Taking out any factory airbags is illegal in most states (most likely all). Also as far as I am aware, disconnecting just one airbag in a vehicle with multiple airbags makes the rest not work.

[Risking]

Any good workshop that sets up race cars should have calibrated corner weight scales.

If you just want an overall weight a public weigh bridge will do. I took my truck over one today was $22.00

If your in Sydney and want to know individual weights I can help you with that.

[Bourbon Boy]

Brad, I just weighed my car... 840 (F) & 740 ® for a total of: 1580kg. What a fat ass... lol

I PM'd you by the way.

[75coupe]

weight your car at a garbage tip for free, if you are near a tip that uses weight to charge for rubbish, drive in turn around and come out...no weight change no cost... lol...