GTA announced requirements (Balance of Performance (BoP), etc.,) for each car to be applied for the SUZUKA GT 350km RACE, Round 5 of the 2024 AUTOBACS SUPER GT series. These requirements will be announced in a bulletin before each round of the series and competitors will have to prepare their cars accordingly.
Please note that the contents from the bulletin below are excerpts selected for ease of understanding and they should not be taken as the actual contents in the officially released bulletin. In case of a need for a precise interpretation, be sure to check the original bulletin.
(Blue underlines: Changes from the 2024 Round 4 at Fuji)
■GT500 Class
The fuel flow restrictor must be fitted in accordance with the SUPER GT Sporting Regulations Art. 23. Success Ballast System. The re-fueling device flow restrictor (internal diameter: 25.0 mm) is also applied. Refer to the end of the section for the mounting positions etc.
■GT300 Class
The BoP regulations for the GT300 class FIA-GT3 cars have been decide based on consultations between GTA and SRO (organizers of IGTC, GTWC, etc.).
○GT300
Car | Minimum Weight | Air Restrictor | BoP Weight | Additional Weight (speed control measure) |
Car weight | Notes |
---|---|---|---|---|---|---|
SUBARU BRZ | 1200kg | None | +76kg | +36kg | 1312kg | *3 See attached chart for boost pressure |
LEXUS LC500h | 1250kg | 29.67mm ×2 | +92kg (Including HYBRID weight) |
+38kg | 1380kg | *4 |
TOYOTA SUPRA | 1250kg | 29.67mm ×2 | +60kg | +38kg | 1348kg | *4 |
TOYOTA GR86 | 1250kg | 29.67mm ×2 | +64kg | +38kg | 1352kg | *4 |
NISSAN FAIRLADY Z | 1250kg | None | +50kg | +50kg | 1350kg | *4 See attached chart for boost pressure |
*A fuel supply restrictor device (internal diameter: 33.0mm) will be adopted in accordance with the 2024 JAF National Competition Vehicle Technical Regulations Chapter 3, Art. 10 10.3.2.
*Minimum ground clearance: a 15mm spacer shall be fitted between the reference plane and the skid block with a thickness of 10 mm (±2 mm).
*3 A re-fueling device supply hose restrictor (internal diameter: 31.2 mm) must be adopted.
*4 A re-fueling device supply hose restrictor (internal diameter: 27.5 mm) must be adopted.
○GT300 Mother Chassis
Car | Minimum Weight | Air Restrictor | BoP Weight | Additional Weight (speed control measure) |
Car weight | Notes | |
---|---|---|---|---|---|---|---|
TOYOTA 86 MC | 1100kg | 40.00mm x1 | 28.29mm x2 | +72kg | +33kg | 1205kg |
*A fuel supply restrictor device (internal diameter: 33.0mm) will be adopted in accordance with the 2024 JAF National Competition Vehicle Technical Regulations Chapter 3, Art. 10 10.3.2.
*Minimum ground clearance: a 15mm spacer shall be fitted between the reference plane and the skid block with a thickness of 10 mm (±2 mm).
*A re-fueling device supply hose restrictor (internal diameter: 27.5 mm) must be adopted.
* The fuel capacity carried on-board is limited to 110 liters.
○FIA-GT3
Car | Minimum Weight | BoP Weight | Additional Weight (speed control measure) |
Car weight | Air Restrictor | Notes |
---|---|---|---|---|---|---|
HONDA NSX GT3 2022 | 1260kg | +50kg | +51kg | 1361 | None | |
Aston Martin AMR Vantage GT3 EVO | 1265kg | +50kg | +51kg | 1366 | None | |
BMW M4 GT3 | 1265kg | +40kg | +51kg | 1356 | None | |
Ferrari 296 GT3 | 1275kg | +40kg | +51kg | 1366 | None | |
Lamborghini HURACAN GT3 EVO2 | 1250kg | +65kg | +38kg | 1353 | 51mm x1 | |
Lexus RC F GT3 | 1300kg | +0kg | +39kg | 1339 | 38mm x2 | |
Mercedes AMG GT3 2020 | 1285kg | +40kg | +39kg | 1364 | 34.5mm x2 | Lambda Min 0.91 |
Nissan GT-R NISMO GT3 | 1285kg | +35kg | +52kg | 1372 | None |
○Maximum boost pressure
GT300 | FIA-GT3 | ||||||||
---|---|---|---|---|---|---|---|---|---|
SUBARU BRZ | Nissan FAIRLADY Z |
HONDA NSX GT3 |
NISSAN GT-R NISMO GT3 |
BMW M4 GT3 | Aston Martin Vantage GT3 EVO |
Ferrari 296 GT3 |
|||
Engine rpm
[rpm] |
Boost pressure ratio @Lambda | ||||||||
4000 | 1.88 @0.88 | 1.87 @0.88 | 1.90 @0.88 | 2.33 @1.10 | 1.54 @0.91 | 1.78 @0.90 | |||
4250 | 2.38 @1.10 | 1.91 @0.90 | |||||||
4500 | 1.85 @0.88 | 1.91 @0.88 | 1.85 @0.88 | 2.44 @1.10 | 1.70 @0.91 | 2.05 @0.90 | |||
4750 | 3.95 @0.92 | 2.47 @1.10 | 2.22 @0.90 | ||||||
5000 | 3.88 @0.92 | 1.81 @0.88 | 1.93 @0.88 | 1.81 @0.88 | 2.50 @1.10 | 1.77 @0.91 | 2.48 @0.90 | ||
5250 | 3.70 @0.92 | 2.54 @1.10 | 2.45 @0.90 | ||||||
5500 | 3.49 @0.92 | 1.73 @0.88 | 1.95 @0.88 | 1.75 @0.88 | 2.58 @1.10 | 1.80 @0.91 | 2.42 @0.90 | ||
5750 | 3.31 @0.92 | 2.62 @1.10 | 2.40 @0.90 | ||||||
6000 | 3.15 @0.92 | 1.70 @0.87 | 1.97 @0.88 | 1.72 @0.88 | 2.65 @1.10 | 1.80 @0.91 | 2.38 @0.90 | ||
6250 | 2.99 @0.92 | 2.68 @1.10 | 2.36 @0.90 | ||||||
6500 | 2.86 @0.92 | 1.67 @0.84 | 1.99 @0.88 | 1.69 @0.88 | 2.53 @1.10 | 1.76 @0.91 | 2.34 @0.90 | ||
6750 | 2.79 @0.92 | 2.43 @1.10 | 1.73 @0.91 | 2.32 @0.90 | |||||
6900 | 1.63 @0.83 | 1.66 @0.88 | |||||||
>/ 7000 | 2.64 @0.92 | 1.51 @0.88 | 1.97 @0.88 | 1.51 @0.88 | 2.33 @1.10 | 1.70 @0.91 | 2.30 @0.90 | ||
>/ 7250 | 2.48 @0.92 | 2.23 @1.10 | 1.37 @0.91 | 2.28 @0.90 | |||||
>/ 7500 | 2.32 @0.92 | 1.95 @0.88 | 2.10 @1.10 | 2.24 @0.90 | |||||
8000 | 1.50 @0.88 | 2.12 @0.90 | |||||||
8100 | 1.00 @0.90 |
The maximum boost pressure level is calculated by applying the above boost pressure ratio to the standard air pressure announced by GTA.
At each race event, the teams must adjust the maximum boost pressure in accordance with the local air pressure announced by GTA.
4/13-14 | Round1 OKAYAMA | |
5/03-04 | Round2 FUJI | |
6/01-02 | Round3 SUZUKA | |
8/03-04 | Round4 FUJI | |
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8/31-9/01 | Round5 SUZUKA |
9/21-22 | Round6 SUGO | |
10/19-20 | Round7 AUTOPOLIS | |
11/02-03 | Round8 MOTEGI |