52.0.3 Valve cover and crankcase ventilation

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52.0.3 Valve cover and crankcase ventilation

The early road-draft crankcase vent system was used from start of production thru February, 1943. After this, positive crankcase ventilation was introduced, which resulted in changes to the oil filler tube, carburetor to air cleaner crossover tube, intake manifold and the addition of a PCV valve and plumbing.

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