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.
Asking price $8,000
