Chassis spaceframe
The spaceframe consists of approximately 220 laser-cut T45 round tubes in five diameters as per the original classis tube dimensions of the short-tail Porsche 917. The chassis is fully-jigged, with an additional jig for the windscreen hoop, and six suspension mounting jigs. Some 220 laser-cut brackets are manufactured for suspension, anti-roll bar and rack mounts, with an additional 80 to mount ancillaries such as the body, dashboard, fuel tank etc.
Engine and transmission
To customer specification. Designed for any Porsche engine/ transmission, including a flat-12. (Note: The ICON 917K demonstrator features a blue-printed, Porsche 911/964 3.6 litre air-cooled flat-6 and inverted G50 5-speed manual gearbox. Power output at the wheels is 270bhp with a power-weight ratio of 325bhp per tonne.
Oil, fuel and injection systems
The oil cooler is an accurate reproduction of the original, with a 15litre oil tank in the original location, and a wax stat to optimise engine warm-up.
The foam-filled duel tank is 65 litre capacity, mounted behind the bulkhead. Fuel supply is via low- pressure lift pump and high-pressure Bosch pumps. All fuels lines and fittings are race specification Aeroquip.
Fuel supply is via Jenvey throttle bodies, and the latest Bosch injectors to optimise performance emissions and fuel economy. All fuel lines and fittings are race specification Aeroquip. A turbocharged engine option, equipped with a pair of K24 Hybrid 993 GT2 turbochargers, is in development.
Hub, uprights, and suspension systems
Bespoke front & rear hub design. 72mm centre lock with dual race bearings. 100% rose joints with T45 tubes, fully-jigged and Tig welded. Front and rear uprights: 5-axis NC HE30 billets to visually replicate those of original Porsche 917K 001-021.
Wheels and tyres
Magnesium casting, machine and powder-coated wheels to ICON design as an accurate reproduction of the original one-piece 15” diameter Porsche 917 rims. Rim widths are to accept available tyres for road and track.
Road wheels: Front 8.5” x 15”width. Rear 14” x 15” to accept Michelin TB road legal tyres.
Track wheels: Front 10.5” x 15”. Rear 15” x 15” to accept Avon race tyres.
Interior
Accurate design to original race car layout optimised for road use. Anti-glare Alcantara dashboard and binnacle, accurate to original geometry. `Interior can be trimmed to customer specification. Analogue instrumentation: 0-10,000 rpm tachometer, speedometer, oil pressure, oil temperature, fuel, ammeter. All gauges supplied by VDO. Momo reproduction steering wheel.
Driver and passenger seats
Bespoke design for driver & passenger, manufactured by Tillet race seats. Seat back angle, width, and fore-aft position can be revised to optimise customer seating position, Alternative fabric colours are available, with Sabelt matching six-point race harness.
The interior features aluminium sill panels, with white GRP floor and inner wing panels. The bulkhead inner is white GRP, then aluminium with Zircoflex fireproof sheet.
Electrical
Modular design with five separate harnesses, front and rear lighting, dashboard, central cockpit, and engine. Junction boxes, fuse and relay boxes, lambda control, DTA engine management, and Innovate AFR gauges are all mounted in the RHS sill. Additional switch panel on RHS sill panel to package various switches required for UK IVA road legality.
Windscreen wiper and demist
Wiper motor is mounted in original position, with bespoke linkage and anti-lift cantilever design single blade to give improved clearance when compared to twin blade original. And we have dual dash vents with warm air supplied from an axial fan via a heater.
Specification At A Glance
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Icon Engineering
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