So what's powering this beast? Well it's the new, improved version of the 2.4L RCD stroker kit, which Clive ran in his last Evo, only this latest engine is fitted with CP pistons and is topped off with an Evo IX MIVEC head to allow the company to do some development work on the new head. Feeding enough air into the engine to produce the extreme power levels--currently 750 bhp with the ability to make at least 900 bhp--is a monster Garrett GT42R turbo which pumps air through a GReddy R-SPL intercooler (apparently no longer in production, but they asked GReddy very nicely). Notice the lack of silicone hoses? Custom-fabricated hard piping is the secret; this car will not be blowing hoses. To ensure the engine doesn't run lean at high revs, Clive is using eight 560cc injectors and the entire set-up is all under the watchful eye of an AEM UEGO engine management system.
So far the car has run on the drag strip twice, still in its Time Attack spec and running road tires. "We don't get peak power until 5,500 rpm," said Clive. " We launch at 6,200 rpm, and it's all sorted by the launch control so I always leave the line at the same power; I change up at 8,500 rpm." Times? So far a 9.9-second run at 145 mph is the best result, and it's a very promising benchmark. Bear in mind the terminal speed for the older car was 150 mph and this `07 car is currently running with at least 200 bhp less. The potential is obvious. With plans to turn up the power and get a professional race driver to help fine-tune the handling on the track, this car is just going to get better and better. Bring it on.
FAST FACTS
Mitsubishi Evo VI RS
OWNER Clive seddon
HOME TOWN Warrington, United Kingdom
DAILY GRIND Mitsubishi Evo guru @ RC Developments
UNDER THE HOOD RC Developments 2374cc stroker kit; custom front mounted oil cooler; custom rear mounted radiator with two Kenlow 10-inch fans; Unorthodox Racing exhaust-cam pulley; TiAL 60mm dump valve; Cusco oil breather catch can; Crower 102mm stroke crank; Manley I-beam rods/bolts; CP 86mm pistons; RC-spec Piper cams; ported MIVEC head; Supertech oversize inlet/exhaust stainless valves; Ferrea duel valve springs/titanium retainers; Metal Mesh air filter; custom stainless steel/aluminium intercooler pipes; custom intake plenum with a Nissan Q45 80mm throttle body; Garrett GT42R turbo; HKS GTII racing wastegate; modified Greddy R-SPL front intercooler kit; eight 560cc injectors; custom fuel tanks; Weldon fuel pump; 60mm stainless steel exhaust manifold; four inch exhaust with Invo Auto titanium silencer
POWER est. 750-900 bhp; 9.9 seconds at 145 mph
BRAINS AEM UEGO engine management
DRIVETRAIN Evo RS gearcase; Holinger gearset; Tilton twin-plate carbon fiber clutch; Evo IX transfer box with viscous centre differential; custom 9-inch rear differential in Hewland case; custom driveshafts/propshaft
STIFF STUFF multipoint custom rollcage; Evo IX front cross-member; TEIN Super Racing multi adjustable coilovers with adjustable top mounts; custom rear suspension mounting cage; Powerflex black bushes; Ralliart rose-jointed bushings
STOPPERS Front: AP Racing 6-pot calipers; 352mm vented discs; Mintex F4R race pads; Rear: AP Racing 4-pot calipers; original vented discs; Mintex 166 pads; Goodridge braided hoses; ATE Super Blue racing brake fluid
ROLLERS 18-inch Volk Racing CE28 wheels; R888 245/45x18 tires
OUTSIDE Monster Sport carbon-fiber bonnet/boot; DAMD front bumper; KS Autos side skirts/rear bumper; C-West rear wing; RC headlights; Lexan side/rear windows; Mitsubishi heated front windscreen
INSIDE Corbeau Revolution seats; Sabelt 5-point harnesses; AIM Pista instrument panel; AEM programmable gauges; Sparco steering wheel; Proshift gear paddles; Flocked dash; Rallytech carbon-fiber door cards/rear seat base; Ikeya sequential gear selector
THANKS Everyone art RC Developments: Andy, Danny, Russell, Simon, Will. Colin Kitchen for help with the planning. Neil Well, Tom Faran for help with the wiring.