Racecar
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General
The Rallybolide is a converted Opel Astra F CC 2.0 Gsi 16v built in 1996. It drove in 22 rallies and hill climbs in Croatia from 2005 to 2019 and has earned a reputation as a result.
In March 2020 he was acquired by Geppler Motorsport. As expected, when examining the car it was discovered that the entire car would have to be rebuilt from scratch. For now, basic things such as bearings, seals and screws were replaced. It was then decided that the car should compete in Group F of the DMSB.
After the rules had been studied, the new construction of the Opel could begin. First, however, many different measurements were carried out to calculate an optimal design of the chassis and the weight and braking force distribution. The calculated values were then used to select and install the most suitable dampers, springs, tires, brake cylinders, brake pads, etc. Furthermore, all components such as seats, belts and extinguishing systems were replaced in order to comply with the regulations. After the racing approval from Dekra and the special approval from the TÜV, it was time to test the car.
The setup was accordingly tailored to the mixing conditions of asphalt and gravel. In addition, particular attention was paid to which components last for how long. All of this was documented. Accordingly, certain components were removed and replaced with better ones. Once the car was satisfactory, a few more test drives were completed with a co-pilot in order to be ready to take part in competitions.
Now it is winter 2022 and the car with pilot and co-pilot are ready to race for the coming season.
Technical Data
All changes (until 08/2023)
Changes Before Purchase:
Everything inside was removed except:
- Trunk lid trim
- Spare tire bracket
- Door panels for driver and co-driver
- Electric motors for window lifters
- Handbrake
- Speedometer unit
- All switches for lights, indicators, and wipers
- Wiring harness except for the repositioning of control units
- Front axle strut brace
- Rear axle strut brace
- Kill switch with cable pull
- Fire extinguishing system with cable pull
- Brackets and switches for rally lights
- Manual switch for radiator fan
- Skid plate with welded mounting points
- Handheld fire extinguisher
- Sparco roll cage with welded reinforcement plates
- Reinforced front and rear strut towers
- Welded and bolted seat bracket mounts
- Front axle stabilizer
- Rear axle stabilizer
- Side indicators removed
- Changed X-brake line layout to H-layout
- Steel braided brake lines
- Hydraulic handbrake
- Regulating valve for the rear brake circuit
- Steel braided fuel lines
- All lines and cables routed inside
- Group A exhaust without a catalytic converter
- Reinforced front strut mounts
- Reinforced rear strut mounts
- Ferrari MOMO Motorsport steel rims
- Reinforced wheel arches
- Intercom for rallies
- Socket connections for co-driver
- ABS removed
- Fog lights removed
- Racing battery
- Quick-release hood latches
- Sports air filter
- Helmet net
- OMP seats with seat brackets (expired)
- Sparco 4-point harnesses (expired)
Changes After Purchase:
- Shoulder belt mounts according to FIA regulations
- Beltenick seat brackets
- Beltenick seats
- Beltenick 6-point harnesses
- All belt mounts
- AFFF fire extinguisher
- OMP fire extinguisher holder (slightly modified)
- Interior primed and painted red
- Sparco roll cage painted blue (not in driver's line of sight)
- Front and rear strut towers, inner hood, cabin ventilation, strut brace, belt cover, and cylinder head cover painted blue
- All interior trim removed
- New side mirror mount
- New driver's side mirror
- Rear fog light
- Reverse light
- Front tow hook
- Rear tow hook
- OEM exhaust
- OEM catalytic converter
- Header modified to fit the catalytic converter
- Fuel lines relocated and secured according to FIA regulations
- Hydraulic parking brake
- Standard parking brake installed
- Hydraulic handbrake relocated to place hydraulic parking brake
- Horn switch (one for the driver, one foot switch for the co-driver)
- Footrest for the co-driver
- Brake disc temperature sensors (easily removable)
- MOMO steering wheel hub
- MOMO steering wheel
- All seals (doors, engine, transmission, etc.) renewed
- Shatterproof film on windows
- Underbody and wheel arch protection
- Car completely sanded, filled, and wrapped, thanks to our sponsor SL-Baggerarbeiten GmbH
- All front suspension bushings
- All rear suspension bushings
- Brake lines secured and rerouted
- Bilstein rear shocks
- Bilstein rear springs
- KW front shocks
- KW coilovers
- H&R front springs, notably, the springs are frequently changed (specifications may vary):
- Fuel filter
- Front control arms
- Tie rods
- Tie rod ends
- Driveshafts
- Rear brake discs and pads
- Front brake discs and pads
- 5 mm wheel spacers front and rear
- Tire sets
- Rim sets
- Rims painted white
- Front bumper painted white
- External kill switch cable pull
- External fire extinguishing system cable pull
- Internal fire extinguishing system cable pull
- Fire extinguishing system (relocated from the rear)
- Battery
- Battery mounts according to FIA regulations
- Coolant system reservoir and hoses
- Oil pan
- Oil circulation hoses
- Spark plugs
- Cylinder head bolts with two thread inserts
- Ignition coil
- Ignition coil housing
- Belts
- Oil filter
- Wiring harness rerouted in the engine bay
- Relay for fuel pump
- Air filter box with steel mesh air filter
- Original camber, toe, and caster on the first test day
- Welded wheel studs
- FIA-required stickers
- 9-axis gyroscope
- Intercom with adapters
- Pedal position modified
- Light for the co-driver
- Door panels with storage, belt holders, etc.
- Protection in the wheel arches
- Protection of lines on the car exterior
- Car made dustproof
- Setup completely adjusted through test driving
- Rear brake pads with lower friction coefficient
- Internal fire extinguishing system cable pull rerouted
- Safety vests, first aid kit, and warning triangle
- Improved strut mounts
- Screw markings
- 4 car stands in the sill
- Brighter main headlight bulbs
- Rear splash guard removed due to jammed stones
- Camera mount inside and outside
- Various charging cables
- Stabilizer bushings
- Driveshafts and shaft seals
- Front axle brake cooling
- Rear axle brake cooling
- Setup changes calculated through measurements at the Nürburgring-Nordschleife
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