[243Racing]

Originally Posted by M2guru

Better picture.

This is absolutely brilliant

[M2guru]

Added swaybar weights: M2 Racing Front Swaybar: 17.8 pounds (stock is 7.8). Gained 10 pounds!!!

[Robbyjai]

Originally Posted by TargaM2

Couple of new weights of items I have fitted for the list (wasn't able to edit as it was in 'read only' format)...
Aluminium GTS hood : 9.9 kg
Cobra Nogaro seats: 10.2 kg each (Carbon version are 5.3 kg each).
Lithiumax battery: 3.3 kg.

i purchased the lithiumax battery.. the ultra lightweight one.. it advertised it as 4.2kg... but when i recieved it bloody thing was 5.6kg

for everyone else...

having said that.. the OEM battery is 26kg .. so it is. massive saving..

ALSO a massive saving can be had switching out the rotors and calipers for AP Racing Pro 5000R ... i saved 10kg per corner and also went to 18 inch rims.. which were 3.2kg lighter PER corner... so rotational mass i was able to take off

20kg for brakes
12.8kg for wheels total of 32kg rotational mass.. that type of weight saving is massive for track purposes

[kart driver]

Originally Posted by Robbyjai

i purchased the lithiumax battery.. the ultra lightweight one.. it advertised it as 4.2kg... but when i recieved it bloody thing was 5.6kg

for everyone else...

having said that.. the OEM battery is 26kg .. so it is. massive saving..

ALSO a massive saving can be had switching out the rotors and calipers for AP Racing Pro 5000R ... i saved 10kg per corner and also went to 18 inch rims.. which were 3.2kg lighter PER corner... so rotational mass i was able to take off

20kg for brakes
12.8kg for wheels total of 32kg rotational mass.. that type of weight saving is massive for track purposes

How’s the balance of the car?
If you shave 20 kilograms off the battery, which is in the rear part then the front engine car, which originally tends to be tail-happy, becomes even more tail-happy.


I took off the rear seats but at the same time I installed the bucket seats. So the balance is the same.


Reducing weight on rims and brakes is excellent idea!

[Robbyjai]

just recorner balanced the car and its fine. it seems to be behaving as expected. i have a few track days coming up so will be interested to see how it goes

also yeh,...reducing weight on rims and brakes.... forget about placebo effect.. you can REALLY feel the weight reduction and the nimbleness of the car and responsiveness and braking response. it really stops on a dime. less rotating mass to stop!! its brilliant!

[kart driver]

Originally Posted by Robbyjai

just recorner balanced the car and its fine. it seems to be behaving as expected. i have a few track days coming up so will be interested to see how it goes

also yeh,...reducing weight on rims and brakes.... forget about placebo effect.. you can REALLY feel the weight reduction and the nimbleness of the car and responsiveness and braking response. it really stops on a dime. less rotating mass to stop!! its brilliant!

How much did the BBK cost?
Why exactly the AP Racing Pro 5000R?

[Robbyjai]

Originally Posted by kart driver

How much did the BBK cost?
Why exactly the AP Racing Pro 5000R?

- in Australia about $8500 AUD (Front Rotor, Brackets, Calipers, Lines and Pads only)
- Why AP Racing Pro 5000R? Because I track a lot. I wanted something that is proven and the PRO 5000R are preferred by Semi professional racers/ Club Racers because of its light weight design, durability, reduced size for a 6 Pot Caliper to be able to fit 18 inch rims on.

20kg Weight reduction changing over the brake and rotors only is a massive weight saving in terms of rotational mass. You will feel that.

Reduced stopping distances, faster acceleration, more responsive steering, better suspension control and damping through reduced unsprung mass

all the benefits of a track car.

the equivalent Brembo Kit is the GT/R Series Calipers... which is slightly larger and heavier than the AP Equivalent. Also the Caliper design of the AP Racing means i have a massive range of Racing brake pads i can chose from as its a standard design.

There are other good kits out there eg the Alcon 6 Pots etc ... but once again they are bigger and heavier than the AP Racing design.

[kart driver]

Originally Posted by Robbyjai

- in Australia about $8500 AUD (Front Rotor, Brackets, Calipers, Lines and Pads only)
- Why AP Racing Pro 5000R? Because I track a lot. I wanted something that is proven and the PRO 5000R are preferred by Semi professional racers/ Club Racers because of its light weight design, durability, reduced size for a 6 Pot Caliper to be able to fit 18 inch rims on.

20kg Weight reduction changing over the brake and rotors only is a massive weight saving in terms of rotational mass. You will feel that.

Reduced stopping distances, faster acceleration, more responsive steering, better suspension control and damping through reduced unsprung mass

all the benefits of a track car.

the equivalent Brembo Kit is the GT/R Series Calipers... which is slightly larger and heavier than the AP Equivalent. Also the Caliper design of the AP Racing means i have a massive range of Racing brake pads i can chose from as its a standard design.

There are other good kits out there eg the Alcon 6 Pots etc ... but once again they are bigger and heavier than the AP Racing design.

I have the CCBs at the M2CS. M2CS is going to stay with me.
And the M2C is very likely to go next year.

Would AP Racing Pro 5000R be seriously lighter than OEM CCBs?
What was the weight difference between OEM calipers vs AP racing?

[Robbyjai]

Originally Posted by kart driver

I have the CCBs at the M2CS. M2CS is going to stay with me.
And the M2C is very likely to go next year.

Would AP Racing Pro 5000R be seriously lighter than OEM CCBs?
What was the weight difference between OEM calipers vs AP racing?

the AP Racing Rotors and Calipers is 9.4kg PER corner lighter than OEM 2NH

The 2NH Caliper is HEAVY. its the same caliper used in the CCB.

The AP Racing Caliper is 2.7kg and the OEM caliper is 7.5kg.

The AP is significantly lighter. CCB for regular track use becomes prohibitively expensive if you track regularly.

The Rear Rotors and Calipers works out about 4.8kg lighter per corner over OEM

So all up if you change all the brakes over

that is

9.4kg x 2 = 18.8
&
4.8kg x 2 = 9.6

= 28.4kg saving rotational mass

I also paired this with ultra light weight rims and went Volk Racing which is 8kg per corner.

OEM Rims is 11.5kg new wheel weight is 8kg = 3.5kg

So 4 rims = 14kg

So overall i save 28.4 + 14 = 42kg (92.5lb)

That is a pretty hefty weight saving rotational mass

[m4forum]

how much the car weights today, full talk and no driver?

[Robbyjai]

Originally Posted by m4forum

how much the car weights today, full talk and no driver?

havent had a chance to weigh it yet. once i have re weighed it i will post.

i am doing some more changes so dont want to weigh until everything is done

[m4forum]

tks for the reply. appreciate sharing information.