Bored and stroked EJ207 1303
Posted: Fri Jun 24, 2022 8:57 pm
Steve Carters Orange Beetle SC 201
Previous owner used the car for hill climbs and circuit racing, it first used a 2180 cc air cooled VW motor, later it was fitted with a Mazda 12A rotary from a Group C touring car, and the car achieved many FTDs during its career. In 1983 the car was stripped of all the go fast bits and stored in a garage at Cowan north of Sydney. I was given the car as just about a bare shell in 2002 when the owner moved to the Gold Coast in Queensland but I didn’t start building the car until 2004. The car was given a body off resto in 2009.
Body:
1973 L model 1600 Beetle or 1303 which is the official VW model designation. The spare wheel well has been removed to allow the Porsche 944 radiator to fit. The behind the seat luggage area has been replaced with a sealed box that is open to the engine bay, this box contains water to air intercooler, an ice box and the fluid pump for the intercooler are mounted inside the car. Mudguards are fibreglass and are sold by Vintage Vee Dub Supplies and are called Aero Look and were designed by Richard Holzl, they feature early Beetle headlight buckets so 911 headlights drop in. Paint colour is blood orange a Porsche colour. A gold Bee Sting radio antenna is fitted at the rear of the roof.
Chassis:
Chassis is from a 1972 Superbug, the chassis was changed to take advantage of more favourable NSW RMS laws for pre 73 model cars. To get better weight distribution the transmission has been moved forward 4 inches. This required the torsion bar housing to be removed; it has been replaced with substantial reinforcing using 1 1/2 roll cage tubing. The brakes master cylinder has been moved sideways to allow room a hydraulic clutch master cylinder to be fitted next to it.
Transmission:
A Porsche G50 5speed transmission from a 1987 Porsche Carrera, a Quaife differential is fitted. CVs are from a Porsche 930 turbo with Swayaway axles. It uses the standard VW mounting point with a Subaru Gears cross member and WRX engine mounts, in the centre of the transmission is a Berg style mount using rubber mountings from a Kombi transmission mounting. At the front of the transmission the original Porsche G50 cross mounting is used. Clutch is a 240 mm aluminium made by Kennedy with a NPC clutch plate. Adaptor plate and flywheel also made by Kennedy.
Engine:
The motor is a EJ207 (2 litre) from a 2003 Subaru WRX STI and had only travelled 13,000 klms when fitted, it has been bored and stroked using a 2.5 Subaru crank, Argo rods and Manley pistons, etc making it 2165cc, it uses Adaptronic Modular engine management, a GM flex fuel sensor is fitted allowing the motor run on any mixture of 98 or E85 via ID2000 injectors. An in tank Walbro 460 feeds another Walbro 460 in a surge tank. Factory headers have been ported and Grimmspeed cross pipe and up pipe are used. The 3 inch exhaust system was built by Westside mufflers, the GTX30/76 has been lifted up higher in the engine bay. Turbo and draws air via hole in the right rear mudguard. Tomei Pon Cams have been fitted as well. A 6x10 PWR water to air intercooler is used and a PWR intercooler radiator is fitted at the front of the car along with its own cooling fan, fluid is pumped to the intercooler radiator with a 12 volt pump, it also has provision to put ice into the system to combat heat soak via a Frozen Boost reservoir, at a recent ½ mile racing event I was leaving the line with 38 degrees C temps out of the turbo and 18 degrees C going into the motor, after returning to the pits there was still ice in the system, turbo outlet temp was 90 degrees C and 22 degrees C going into the motor at end of the ½ mile. It is producing 382 rwkW with more to come @ the wheels on 31 psi on United pump E85.
Rear suspension:
The rear suspension is from a 1986 944 Porsche, it uses similar trailing arms to a Beetle but they are aluminium instead of steel, when used in conjunction with Porsche 944 spring plates they have adjustable height, toe and camber. The mounting points are the same on a Beetle as they are on the Porsche 944. The rear shocks are Bilstein. Short 40 hp style 30 mm Sway Away Torsion bar are used
Front suspension:
The front 3 bolt McPherson struts have been modified to feature adjustable lower spring platforms, and smaller diameter 150 pound springs allow the front wheels to have sufficient clearance, Koni Sport shocks from a series 1 RX7 are fitted. Rack and pinion steering from a 1975 1303 Beetle has been fitted.
Brakes:
Brakes are 4 spot Monoblock Brembos from a Porsche Boxster. On the front they attach to the factory VW calliper mounting via a 6061-T651 aluminium square block adaptor and use a Boxster rotors mounted on 944 alloy hubs. The rear brakes use Porsche 944 rotors with the stock internal Porsche drum emergency brake. The rear callipers attach to the factory Porsche calliper mounting via a 6061-T651 aluminium square block adaptor. The brake master cylinder was moved 25 mm to the right side of the car to allow the clutch master cylinder room to fit beside it. A larger 20.6 master cylinder is fitted, no power assistance is required.
Wheels:
Wheels can vary, 15x6 inch Porsche Cookie cutters for drag racing with 205/50x15 Mickey Thompson ET streets and 195/55x15 Goodyears or ½ mile racing, 18 inch Boxster wheels for the street, I also own 18 inch Porsche Hollow Spoke twists and 18 inch Simmons OM wheels. At the moment I’m running Nitto Invo tyres on the street, 225/40 x 18 and 265/35 x 18, very happy with them.
Interior:
Factory dash with some extra gauges, a Spa combined tacho and speedo, the rest of the gauges are VDO coolant temp gauge, oil temp gauge, oil pressure and fuel level. A Turbosmart Eboost 2 controls boost with settings for wet weather etc. Steering wheel is Momo, seats are vintage Recaro Concords. A 6 point IHRA cage is fitted made by Ministry of Fabrication, waiting on final tech inspection.
Performance:
Best ET was 11.803 and best MPH 124.2912.199. MPH suggest that I should get into the 10s, I was having lots of wheel hop issues and ended up breaking a modified Porsche 944 stub axle. The car has competed in the Snowy Mountains 1000 at Cooma Airport in the past and won its class. it won its class with a time of 22.3247 @ 236.7 kph over the standing 1000 metres and finished 50th out 135 cars. I recently ran a ½ mile event at Gunnedah Airport, I won my class and finished 37th out of 80 cars in a time of 19.5 seconds at 231kph with a slipping clutch. Motor is now making 382 rwkW (512 hp) and I’ve run out of turbo, I will leave it alone for a while, maybe.
Body:
1973 L model 1600 Beetle or 1303 which is the official VW model designation. The spare wheel well has been removed to allow the Porsche 944 radiator to fit. The behind the seat luggage area has been replaced with a sealed box that is open to the engine bay, this box contains water to air intercooler, an ice box and the fluid pump for the intercooler are mounted inside the car. Mudguards are fibreglass and are sold by Vintage Vee Dub Supplies and are called Aero Look and were designed by Richard Holzl, they feature early Beetle headlight buckets so 911 headlights drop in. Paint colour is blood orange a Porsche colour. A gold Bee Sting radio antenna is fitted at the rear of the roof.
Chassis:
Chassis is from a 1972 Superbug, the chassis was changed to take advantage of more favourable NSW RMS laws for pre 73 model cars. To get better weight distribution the transmission has been moved forward 4 inches. This required the torsion bar housing to be removed; it has been replaced with substantial reinforcing using 1 1/2 roll cage tubing. The brakes master cylinder has been moved sideways to allow room a hydraulic clutch master cylinder to be fitted next to it.
Transmission:
A Porsche G50 5speed transmission from a 1987 Porsche Carrera, a Quaife differential is fitted. CVs are from a Porsche 930 turbo with Swayaway axles. It uses the standard VW mounting point with a Subaru Gears cross member and WRX engine mounts, in the centre of the transmission is a Berg style mount using rubber mountings from a Kombi transmission mounting. At the front of the transmission the original Porsche G50 cross mounting is used. Clutch is a 240 mm aluminium made by Kennedy with a NPC clutch plate. Adaptor plate and flywheel also made by Kennedy.
Engine:
The motor is a EJ207 (2 litre) from a 2003 Subaru WRX STI and had only travelled 13,000 klms when fitted, it has been bored and stroked using a 2.5 Subaru crank, Argo rods and Manley pistons, etc making it 2165cc, it uses Adaptronic Modular engine management, a GM flex fuel sensor is fitted allowing the motor run on any mixture of 98 or E85 via ID2000 injectors. An in tank Walbro 460 feeds another Walbro 460 in a surge tank. Factory headers have been ported and Grimmspeed cross pipe and up pipe are used. The 3 inch exhaust system was built by Westside mufflers, the GTX30/76 has been lifted up higher in the engine bay. Turbo and draws air via hole in the right rear mudguard. Tomei Pon Cams have been fitted as well. A 6x10 PWR water to air intercooler is used and a PWR intercooler radiator is fitted at the front of the car along with its own cooling fan, fluid is pumped to the intercooler radiator with a 12 volt pump, it also has provision to put ice into the system to combat heat soak via a Frozen Boost reservoir, at a recent ½ mile racing event I was leaving the line with 38 degrees C temps out of the turbo and 18 degrees C going into the motor, after returning to the pits there was still ice in the system, turbo outlet temp was 90 degrees C and 22 degrees C going into the motor at end of the ½ mile. It is producing 382 rwkW with more to come @ the wheels on 31 psi on United pump E85.
Rear suspension:
The rear suspension is from a 1986 944 Porsche, it uses similar trailing arms to a Beetle but they are aluminium instead of steel, when used in conjunction with Porsche 944 spring plates they have adjustable height, toe and camber. The mounting points are the same on a Beetle as they are on the Porsche 944. The rear shocks are Bilstein. Short 40 hp style 30 mm Sway Away Torsion bar are used
Front suspension:
The front 3 bolt McPherson struts have been modified to feature adjustable lower spring platforms, and smaller diameter 150 pound springs allow the front wheels to have sufficient clearance, Koni Sport shocks from a series 1 RX7 are fitted. Rack and pinion steering from a 1975 1303 Beetle has been fitted.
Brakes:
Brakes are 4 spot Monoblock Brembos from a Porsche Boxster. On the front they attach to the factory VW calliper mounting via a 6061-T651 aluminium square block adaptor and use a Boxster rotors mounted on 944 alloy hubs. The rear brakes use Porsche 944 rotors with the stock internal Porsche drum emergency brake. The rear callipers attach to the factory Porsche calliper mounting via a 6061-T651 aluminium square block adaptor. The brake master cylinder was moved 25 mm to the right side of the car to allow the clutch master cylinder room to fit beside it. A larger 20.6 master cylinder is fitted, no power assistance is required.
Wheels:
Wheels can vary, 15x6 inch Porsche Cookie cutters for drag racing with 205/50x15 Mickey Thompson ET streets and 195/55x15 Goodyears or ½ mile racing, 18 inch Boxster wheels for the street, I also own 18 inch Porsche Hollow Spoke twists and 18 inch Simmons OM wheels. At the moment I’m running Nitto Invo tyres on the street, 225/40 x 18 and 265/35 x 18, very happy with them.
Interior:
Factory dash with some extra gauges, a Spa combined tacho and speedo, the rest of the gauges are VDO coolant temp gauge, oil temp gauge, oil pressure and fuel level. A Turbosmart Eboost 2 controls boost with settings for wet weather etc. Steering wheel is Momo, seats are vintage Recaro Concords. A 6 point IHRA cage is fitted made by Ministry of Fabrication, waiting on final tech inspection.
Performance:
Best ET was 11.803 and best MPH 124.2912.199. MPH suggest that I should get into the 10s, I was having lots of wheel hop issues and ended up breaking a modified Porsche 944 stub axle. The car has competed in the Snowy Mountains 1000 at Cooma Airport in the past and won its class. it won its class with a time of 22.3247 @ 236.7 kph over the standing 1000 metres and finished 50th out 135 cars. I recently ran a ½ mile event at Gunnedah Airport, I won my class and finished 37th out of 80 cars in a time of 19.5 seconds at 231kph with a slipping clutch. Motor is now making 382 rwkW (512 hp) and I’ve run out of turbo, I will leave it alone for a while, maybe.
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