1st slide

Super Rally Car (SRC) regulation

Any inquiries or questions regarding this regulations should be sent to tech@super-rally.net

1) Eligibility

A car under the following regulations is authorised to participate in the Japan Super Rally Series as Super Rally Car(SRC).

2) Legality

SRC must be legal on Japanese public roads. A temporary car imported to Japan must
satisfy the road traffic regulations in the countries the car is registered.

3) SRC must be recognised by Japan Motorsports Association(JMA)

3.1 Each car/parts a constructor intends to use on SRC must be homologated by JMS thus the constructor must start discussion on the parts with JMS three months (car) or a month (parts) prior to the rally that constuctor intendis to run the car/parts.

3.2 The parts need to be homologated are shown in BOLD

3.2 The homologation parts can be used individually in 2017.
(total kit including all the parts concept is under discussion for 2018)

4) Body

No matter what production year, any four wheel vehicle with no limitation of the number of
the seats can be used on the base car.
4.1 Dimensions
Length: must be the same or less than the car homologation at FIA or manufactures’ official documents.
Width: 1910mm max.
The body design must be submitted to JMA in case of changing the length/width
from the original.

4.2 Body Reinforcement including box structure is authorised.

4.3 Cross members, suspension mounting, engine mounting, drive train mounting and type of suspension are free.

4.4 Only body/parts protections under the floor are authorized. Aero dynamic effect
device or body shell modification under the floor is prohibited.

4.5 One spare wheel at least. The location is free.

4.6 Fuel Tank
Original fuel tank or FIA safety fuel cell are authorised. The location is free for FIA fuel cell.
However, fireproof and liquid‐proof bulkhead must separate the cockpit from the fuel cell in
case of n case of fuel tank installed in the boot or and the rear seats removed.

5) Panels

5.1 Doors for crew
Doors for crew must be original. Polycarbonate windows are authorised. The door bar must retain as the originally fitted except FIA composite safety device that is authorised to replace the door bars.

5.2 Other doors
Rear doors or Hatch can be replaced by GFRP or CFRP. However, all the doors must be operational and the original grass area must be original grass or made from Polycarbonate.

5.3 Engine food and boot (must be submitted to JMA in case of changes)
Engine food and boot are to be replaced by GFRP or CFRP with extra openings.

5.4 Front wings/fenders (must be submitted to JMA in case of changes)
The material and design are free. However, no hole is allowed in front part of the circumference of the fender / extension. The rear part of circumference is free to hole or to cut away.

5.5 Rear wings/fenders (must be submitted to JMA in case of changes)
The material and design are free. However, no hole is allowed in front part of the circumference of the fender / extension. The rear part of circumference is free to hole or to cut away.

6) Bumpers and aero dynamics devices

6.1 Front bumper (must be submitted to JMA in case of changes)
The material and design are free. However any sharp protuberance (i.e., canard wing) is not allowed for safety reasons. Bolt on air splitter under the bumper is not authorised.

6.2 Rear bumper (must be submitted to JMA in case of changes)
The material and design are free. However any shapes / constructions creating aero dynamics effect including diffusers are not authorised on / inside bumper structures.

6.3 Rear wing /air spoiler (must be submitted to JMA in case of changes)
The material and design are free except sharp protuberances. The rear wing must not exceed the roof line and the body width.

6.4 Side sill
Side sills are free as long as the sills are within the body width.

6.5 Air intake for the cockpit
Air intake for the cockpit is free.

7) Safety

7.1 Roll cages
Roll cages must be homologated by FIA / ASN.
Roll cages made to FIA appendix J with no homologations must be submitted to JMA.

7.2 Kill switch / ignition switch
Recommendable in 2017 and compulsory in 2018

7.3 Automatic fire extinguisher
Recommendable in 2018 and compulsory in 2019

7.4 Handheld fire extinguisher
Any competing car must be equipped with FIA homologated fire extinguisher.

7.5 Side protection door bars
Originally fitted side protection door bars are compulsory except the door bars can be replaced with composite side protection panels made to FIA appendix J 254 and the drawing 255-14

7.6 Other safety equipment
Seats, Seat belts, Crash helmets, FDR devices (such as HANS) and all the driver’s clothing must be homologated by FIA

8) Engine

Any engines from production cars or from market (race engines) can be used.
The engine location is free.
The price cap for the engines from the market with manifolds, turbo, air restrictors, sensors, surge tank and all the necessary equipment to run the engine except ECU must be less than JPY3,000,000 without tax.

Any modifications on both production engines and engines from the market are free.
However, JMA reserves the rights to give handicaps by the size of air restrictor or the weight of car.

An entrant intending to use an engine from the market or to modify a production engine must submit JMA for the authorisation.

9) Engine accessories

9.1 Turbo is free

9.2 Air restrictors
For super charged engines, air restrictor diameter is
Engine capacity less than 1700cc: 35mm
Engine capacity equal or over 1700cc up to 2100cc: 34nn
Engine capacity equal or over 2100cc: 33mm

For naturally aspirated engines, no restrictors is required up to 2800cc.
JMA will detrmine the size of restrictor individually for the bigger engine.

All the restrictors must be made to and be fitted as the manner as FIA appendix J.

9.3 Maximum boost for super charged engines
For super charged engines, the maximum boost is 2.5bar.
Scrutineers have the rights to check the logging data of competing cars.

9.4 Type of Intercooler, air/water pipes and intake manifolds are free

9.5 Radiators and water pipe, water pumps are free.

9.6 Sensors to run the engine and ECU are free.

9.7 Exhaust and catalyzer
Exhaust and catalyzer are free as long as road legal. The maximum noise level is 105db at 3 metres form the tail pipe.
JMA deserves the rights to reduce the noise level with six weeks advance notice.

10) Drive trains

10.1 Gear box
Gear box must have mechanical shift either direct or by rods/wires.
Casings, number of gears and gear box location are free.

10.2 Differentials
Front and rear diff must be original or friction plate LSDs.
Electronic controlled centre diff with any differential manner is authorised.

11) Minimum weight

The following minimum weight is applied (coefficient for supercharged engine is 1.7)
For 4WD less than 2900cc: 1250kg
For 4WD equal or over 2900cc up to 3600cc: 1300kg
For 4WD equal or over 3600cc: 1350kg

For 2WD less than 1700cc: 1000kg
For 2WD equal or over 1700cc up to 2900cc: 1050kg
For 2WD equal or over 2900cc: 1100kg

JMA deserves the rights to give exceptions individually.

12) Wheels

Rims and tyres are free for 2017 and 2018.
From 2019, wheel regulations will be the same as FIA R5 regulations,
The present R5 regulations is
Tarmac: The maximum width for combination of rim and tyre is 9”. Only 18” x 8” is authorised. The minimum weight for a rim is 8.9kg.
Snow: Maximum 5.5” x 16 is authorised, if quoted on the supplementary regulations.

13) Brakes

Carbon brake discs are not authorised.

14) SRC2

JAF registered or FIA homologated 4WD supercharged vehicles with roll cages under old regulations and with 32mm air restrictor may compete in JSR if JMA authorises after studying the submission from the competitors.
The competitors may be required to modify/add the roll cages bars.

For SRC2, The safety regulations 7.2 to 7.6 are applied.

The submission must be presented six weeks prior to the rally with documents/drawings/pictures required.
The presence of the car to the JMA designate location may be required.