Quote:
Originally Posted by helgi
Waiting for more tech info. Thanks a lot in advance!
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Starting with the prototypes, in 2019 there were 4 classes, with the following limitations:
P1: this is the premier prototype class, for cars with engines limited to 7.000 cm³ if naturally aspirated, or 4.200 cm³ if forced induction. The regulation for this class is as follow (minimum weight / maximum fuel tank capacity):
LMP3 / Ginetta G57 P2: 940 kg / 105 lt
other cars with NA engines:
6.001 cm³ to 7.000 cm³: 900 kg / 115 lt
5.001 cm³ to 6.000 cm³: 860 kg / 115 lt
3.801 cm³ to 5.000 cm³: 820 kg / 115 lt
2.501 cm³ to 3.800 cm³: 730 kg / 115 lt
Up to 2.500 cm³: 680 kg / 115 lt
other cars with Forced Induction Engines:
2.401 cm³ to 4.200 cm³: 900 kg / 115 lt
2.001 cm³ to 2.400 cm³: 800 kg / 115 lt
Up to 2.000 cm³ (more than 2 valve per cylinder): 760 kg / 115 lt
Up to 2.100 cm³ (2 valve per cylinder): 700 kg / 115 lt
Up to 1.350 cm³ (bike engines): 520 kg / 80 lt
Other than that, the following engines are prohibited:
Judd Power: HK V8 LMP2, JUDD KV (ZYTEC) V8 F3000, JUDD DB3.0, JUDD DB3.4, JUDD DB4.0, JUDD GV 4.0, JUDD GV 4.2, JUDD GV 5.0, JUDD GV 5.5;
Zytec;
Acura HPD AR35TT;
Gibson Technology: GK428 LM P2, GL458 LM P1;
AER: SR20, P03, P07, P14, P25, P32, P41, P60B, P63, P65, P91 e P91P;
Mecachrome V634P1 LM P1;
Toyota TS050 Hybrid LM P1;
Chevrolet Ilmor.
Forced Induction engines over 4200 cm3
There is also a limit of tires per qualy session + race: 10 tires for 3-hour races or 14 tires for 4-hour races. Both the engine and tire limitations are in place to avoid cost escalating, or one team over expending the others in order to achieve an advantage.
In addition, the cars must comply FIA Annex J safety recommendations. And that’s it as far as regulations go, so there is not limiting stuff like aero, engines, transmissions, suspensions or any other technical aspect of the cars, pretty much making for a modern day Can-Am or Interserie.
For 2020, there is talks to forbid the use of carbon brakes (very expensive in Brazil, due to exchange rates and import taxes) and to use restrictors on the larger engines to avoid the same hp race that killed Can-Am.