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John Cooper Works (JCW) is a British car marque now owned by BMW and it is an in-house tuning, development, and international automotive racing division for Mini vehicles. It was founded in 2002 by Michael Cooper, son of John Cooper, the racing car maker and tuner responsible for the original Mini Cooper.
The ZZ632's iron block shares a mold with Chevrolet Performance's ZZ572 crate engines, but the castings are machined to accommodate the huge 632 cubic-inch displacement. The bore grows by 0.040 in (1.0 mm), compared to the 572-cubic-inch V8s, with most of the displacement gain coming from a stroke that is 0.375 in (9.5 mm) longer.
The BMW versions of the Prince engine are known as the N13 and the Mini versions are N12 (Double VANOS, Valvetronic 88 kW (118 hp) at 6000 rpm) in 2007–2010 Cooper; N14 (Single VANOS, Turbocharged 128 kW (171 hp) at 5500 rpm) in 2007–2010 Cooper-S; N14 (Single VANOS, Turbocharged 155 kW (208 hp) at 6000 rpm) in 2009–2013 JCW Cooper; N16 ...
A 2006 Mini Cooper S Checkmate Interior (pre-facelift) The Mk I Mini One, Cooper and Cooper S all used variants of the Brazilian-built Tritec engine, co-developed by US-based Chrysler and BMW; the Mini One D used a Toyota 1ND-TV diesel engine. In August 2006, BMW announced that future engines would be built in Great Britain, making the car ...
The largest A-series engine displaced 1.3 L; 77.8 cu in (1,275 cc). It used the 70.6 mm (2.78 in) bore from the Mini Cooper S versions but the 81.4 mm (3.20 in) stroke from the plain Mini Cooper. It was produced from 1964 until 1980, when it was replaced by an A-Plus version. The bore size was around the maximum possible in the block, with very ...
At idle, with almost closed throttle, the manifold vacuum is high, which would draw in a large quantity of crankcase gases, causing the engine to run too lean. The PCV valve closes when the manifold vacuum is high, restricting the quantity of crankcase gases entering the intake system. [12]