BMW M3 S14 Engine
This S14B23 inline-four was removed from my 1989 BMW M3 and commissioned a rebuild that included boring the block to 94mm and painting the inside of the block with Glyptal. A replacement crankshaft was ground 0.010? before being installed together with new bearings, forged IE H-beam rods, Carrillo pistons, ARP hardware, and a baffled oil pan. The cylinder head was refinished, and a Cometic cylinder head gasket was fitted. New timing components include the chain, rails, tensioner, and hardware. The exhaust camshaft was replaced by a BMW Motorsports unit, and a new distributor was sourced. Also included in the sale are a wiring harness, airbox, ECU, starter, exhaust manifold, MAF, flywheel, fuel rail, fuel injectors, and more. The 2.3L BMW S14 inline-four features dual-overhead camshafts and two throttle assemblies with two butterfly plates each. The catalyst-equipped S14B23 produced 192 horsepower and 170 lb-ft of torque.