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Roger Clark Motorsport Time Attack Imprezza


Chris Wilson

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Gobstopper Specs:

 

Power = 850 bhp

Weight = 1120 kgs

Intended use: street/track/hill climbs/drag strip/time attack

 

Body

 

WRC steel arches WRC front and rear bumpers

WRC carbon rear spoiler

FIA T45 multi point welded in roll cage

STi alloy bonnet with RCMS heat extraction vents and gas struts

Heated front screen

WRC non heated lightweight rear screen

 

Engine

 

2.0Litre closed deck subaru block

RCMS extreme arrow rods

RCMS 75mm steel crankshaft

RCMS omega flat top pistons (coated) compression ratio 9.5:1

V4 STi cylinder heads with WRC/RCMS O-ring head gaskets and gas rings

One piece Nimonic exhaust valves

One piece stainless inlet valves

RCMS uprated valve springs

Plasma nitrided titanium spring caps

WRC main and big end bearings

WRC R-Profile high wrap cam belt system

RCMS modified oil pump to suit R-Profile belt

WRC S10 inlet manifold

RCMS eight injector kit

RCMS 72mm throttle body

RCMS 5.5 litre alloy sump

WRC short runner exhaust manifold

Garret GT 35-40 turbo with speed sensor

K&N air filter with RCMS 100mm inlet trumpet

RCMS high flow intercooler with twin tube core

70mm stainless steel intercooler pipe work

 

Electronics

 

M800 Motec ECU with traction control,nitrous control,anti-lag

paddle shift control,and full engine management control and data login

Motec dash with data login

Defi gauges for turbo,oil,fuel pressure

 

Interior

 

FIA carbon kevlar Recaro seats

FIA Sabelt 6-point harness

 

Transmission

 

R180 STi rear axle 3.9:1 cwp and plated Modena LSD differential

GKN rally drive shafts front and rear

Torque line carbon fibre propshaft

Six speed subaru gearbox casing modified for sequential housing

Six speed Modena gear kit

Subaru 3.9:1 front cwp

RCMS sequential system

RCMS paddle shift system

Plated centre diff with 1:1 uprated output Modena gears

Plated front Modena differential

 

Fuel System

 

FIA spec 26 litre rubber/kevlar bag tank in aluminium cover

Twin Bosch fuel pumps (200 litre per pump)

-8 Goodrich fuel feed pipe

-6 Goodrich fuel return pipe

-6 fuel cooler with cooling fan on return

RCMS 8 injector distribution block

2x SX fuel regulators running at 4 bar static pressure

 

Suspension

 

WRC spec EXE-TC fully adjustable dampers

High and low speed bump + rebound adjustment

STi Rose jointed rear lateral links

STi Rose jointed rear trailing links

EXE-TC bottom rose jointed upright bushes

STi alloy front arms (polished)

STi quick-steer steering rack

 

Other

 

WRC roller bearing single piece steering column

Momo suede steering wheel

Nitrous

NX full wet system

121bs carbon bottle with heater jacket

High flow shark nozzle

Motec auto control or driver manual system

Adjustable from +35bhp to +400bhp

 

Clutch

 

RCMS spec triple plate alloy cover OS Giken clutch and flywheel

RCMS hydraulic light pressure system

Quick release dry brake fluid connection

 

Brakes

 

AP 355mm six pot front (track and road use)

AP 304mm four pot front (drag strip use)

AP 290mm four pot rear with floating discs

RCMS hydraulic carbon handbrake

-3 stainless steel goodrich pipe work and fittings

 

Wheels

 

Road/Track use 19x8 forged alloy 1 piece rims

Drag strip use 15x8 spun alloy 3 piece rims

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Guest Nicholas

RCM are located half a mile from my house, amazing tuners when it comes to impreza's and I believe the build did come to the £250,000 mark.

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It also has to be one of the cleanest demo cars out there. I had a really good look allover it last time it came to Elvington, and there wasn't anything to fault it on visually. Even the underside of the thing is completely polished/powdercoated.

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Is the guy a millionare or lottery winner - I was like wtf(in a good way) when I seen them arriving in their big trucks and pro trailers

 

He had the full attention of Dave Rowe all day and they just seemed very professional for a time attack team(not dissing any of the others) - is there any money in the sport?

 

p.s what a car - keeping up was an understatement, I cant remember what it ran, 52's??

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Just checked what it did last year at TOTB. 9.59 @148 1/4 mile, 194.1mph top speed (standing mile I think) and 36.66 on the handling.

 

It battered pretty much everything.

 

I have some photo's of the suspension and brakes etc. I will root them out.

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Those are some impressive figures (and pictures), that air filter is MASSIVE :D

 

Oh & I notice that he uses a Samco hose as an airfilter pipe, I asked (in another thread) if that would be OK & it was an uncertain result, I was worried about the pipe caving in under extreeme boost pressures, I guess it's OK

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Those are some impressive figures (and pictures), that air filter is MASSIVE :D

 

Yeah the 1/4 mile time is pretty awesome, considering it was on the crappy surface at elvington.

 

The only other cars that day that hooked up as well, where Keith Cowies and Tim Websters Skylines. But obviously they're full on drag cars.

 

It was also very impressive at Oulton Park in the time attack last week.

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  • 4 weeks later...

It's a very balanced package, a proper, reliable engine and well balanced supporting mods to the suspension, transmission and brakes, driven by a pro driver with pro support. As such it takes Time Attack to a level way beyond the amateur Garagiste, unless they are very well funded and decide that such costs are justified to promote their business, or are mad enough to think Ron Dennis may be driver scouting at a Time Attack day. Lovely machine though and sets the levels for others to try and aspire to, although I doubt many will, on costings alone.

 

Thanks for the pics!

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