2.8L 12v - CIH 

Moving from four cylinders to six changes the whole picture within the CIH family. The 2.8-litre twelve-valve lines up six cylinders, with the natural balance and smoothness a straight six brings, but also a longer crankshaft and inertia loads that spread differently. The rotating assembly becomes the thing to watch as soon as revs or load go up. We cover this Vauxhall/Opel block with JE PISTONS forged pistons, made to take combustion pressures the standard part was never asked to handle. One reference, but the one that matters.