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Clio Williams Maxi

Renault Clio Williams MAXI
Renault Clio Williams Maxi Kit car.jpg
Overview
Manufacturer Renault Sport
Production 1995-1996 with later evolutions
Body and chassis
Class Rally car
Body style 3-door hatchback
Related Renault Mégane Maxi
Peugeot 306 Maxi
Peugeot 106 Maxi
Citroen ZX Maxi
Seat Ibiza Kit car
Fiat Punto Kit car
Powertrain
Engine 2.0 L Naturally aspirated I4
Transmission 6-speed manual or 6-speed sequential (7-speed sequential from Megane Maxi can be retrofitted)

Clio Williams Maxi was a factory evolution of Clio Williams Gr.A rally car introduced in early 1995 under kit-car rules (Gr.A7K). It was used to represent the brand in various national championships as in France Rally Championship in the hands of Philippe Bugalski and Jean Ragnotti and in Belgium with Bernard Munster. Most notable exterior differences are wider wheel arches to accommodate bigger wheels and wider track, different front and rear bumpers and carbon fibre rear wing.

Other exterior differences are another bonnet vent for dissipating heat from the engine bay and fuel cap in different location. Most commonly used rims were Speedline 2012 "Acropoli Due" and Speedline 2010 (used mostly on the front wheels). Rims were made from magnesium and were 16″ or 15″ for gravel and 17″ for tarmac stages.

Suspension (3-way adjustable) was made by Proflex and track was widened to 1590 mm. Maxi had much thicker anti-roll bars (up to 35 mm for tarmac stages). Hubs were made of aluminium and were bespoke items. Rear beam was also modified with thicker ARB and allowed different camber and toe settings.

Brakes were made by Alcon. Front discs were on aluminium bells and were 332 mm in diameter with 4 pot Alcon calipers. Rear discs were 266 mm in diameter with 2 pot Alcon calipers.

Cage and shell reinforcement were done by Matter France.

F7R engine was tuned by Sodemo and produced around 250 hp in early evolutions (around 275 hp for last evolutions with destroked engine). Main difference to the Gr.A car was the use of individual throttle bodies and even wilder cams. Other differences include modified head for improved gas flow and modified block for better cooling. Extremely wild cams with maximum lift up to 15 mm required the use of solid lifters and titanium valves, springs and retainers. Pistons and rods were made by Pankl. Pistons were a forged "slipper" design and rods were forged H section with custom 150 mm length to compensate for different piston compression height. Compression ratio was 12.5:1 and ran on special racing fuel. Exhaust manifold was a 4-2-1 design and was made from Inconel alloy. Clutch was made by AP Racing.


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