engines were designed to use identical castings for each bank, left and right. A rare exception was the Lancia 22½° narrow-angle V12 of 1919, which used a single block casting combining both banks. The Ford flathead V8introduced in 1932represented a significant development in the production of affordable V engines. It was the first V8 engine with a single engine block casting, putting a V8 into an affordable car for the first time. The communal water jacket of monobloc designs permitted closer spacing between cylinders. The monobloc design approach also improved the torsional rigidity of engines, as cylinder numbers, engine lengths, and power ratings increased. Integrated cylinder block and crankcase Most engine blocks today, except some unusual V or radial engines and large marine engines, use a monobloc design with one block for all cylinders, plus an integrated crankcase. In such cases, the skirts of the cylinder banks form a crankcase area of sorts, which is still often called a crankcase despite no longer being a discrete part. Use of steel cylinder liners and bearing shells minimizes the effect of the relative softness of aluminium. Some engine designs use plasma transferred wire arc thermal spraying, instead of cylinder sleeves, to further reduce weight. These types of engines can also be made of compacted graphite iron, such as in some diesel engines. Integrated cylinder block and head Some modern consumer-grade small engines use a monobloc design where the cylinder head, block, and half of the crankcase share the same casting. One reason for this, apart from cost, is to produce an overall lower engine height. The primary disadvantage can be that repairs become more time-consuming and perhaps impractical. An example of engines with integrated cylinder heads are the Honda GC-series and GXV-series engines, which are sometimes called "Uniblock" by Honda. Integrated crankcase and transmission Several cars with transverse engines, have used an engine block consisting of an integrated transmission and crankcase. Cars that have used this arrangement include the 1966-1973 Lamborghini Miura and cars using the BMC A-series and E-series engines. This design often results in the engine and transmission sharing the same oil. Motorcycles such as the Honda CB750 use a similar layout, with the cylinder block and crankcase integrated with part of the transmission. Many farm tractor designs have the cylinder block, crankcase, transmission, and rear axle integrated into a single unit. An early example is the Fordson tractor. See