BMW M3 Sport Evolution | Shift 2 Unleashed | Cockpit View
0Uniquely, the Sport Evolution was the only E30 not to use a 2302cc version of the fabled inline four cylinder S14 engine. Instead, this final iteration featured a power unit taken out to 2467cc (a gain of 165cc).
Each cylinder bore was enlarged from 93.4mm to 95mm. Meanwhile, stroke was lengthened from 84mm to 97mm which necessitated the installation of a unique long throw crankshaft. Special nozzles were also installed that sprayed oil under the pistons to keep them cool.
Other new equipment included more aggressive camshafts, larger inlet and exhaust valves (the latter now sodium-cooled) and a big bore exhaust manifold.
Unlike the Evolution 2 motor which featured a white M-striped cam cover and intake plenum, the Sport Evolution’s engine returned to a conventional black finish albeit with distinctive new red-capped spark plug leads.
The compression ratio was reduced from 11.0:1 to 10.2:1 and every engine was equipped with a catalytic converter regardless of the car’s final destination.
Peak output was 238bhp at 7000rpm and 177lb-ft at 4750rpm. And the rest of the Sport Evolution’s engine characteristics were largely unchanged; it ran the M10-derived cast-iron block with a shortened four valve light alloy DOHC head developed from the six cylinder M88 and S38 motors. Individual throttle plates were installed for each cylinder along with siamesed pistons and mechanical instead of hydraulic lifters. An oil cooler was located behind the front spoiler.
Transmission was as per the Evolution 2: a Getrag 265 close-ratio five-speed gearbox (with dogleg first), a hydraulic clutch, limited-slip differential with 25% locking factor and 3.15:1 final drive ratio.
A special M3-specific Bosch ABS system was fitted and the brake discs were bigger than on normal E30s: 280mm at the front (ventilated) and 282mm at the rear (solid). Reinforced single piston calipers were sourced from the E28 5-series along with the stub axles.
The power-assisted quick ratio steering rack was unique to the M3. Red needled VDO instrumentation was as per every other M3. It comprised a special 160mph (260kmh) speedometer and 8000rpm rev counter. These two large dials were split by a BMW Motorsport logo and an oil temperature gauge which replaced the economy meter fitted to the rest of the E30 range.
The BMW M3 Sport Evolution is the standard car featured in Shift 2 Unleashed.
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