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#11
02-08-13, 02:24
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Darrin, the normal sump vent on a car is sucked clear by the draft of air going under the car. This doesn't happen in a carrier because the engine is fully enclosed. The positive crank case ventilation is activated in a high manifold vacuum situation drawing the "blow by" fumes in the crank case into the inlet manifold. Clean air is drawn through the breather at the rear to replace the scavenged fumes. I imagine it was the poor filtration of this breather, as much as the air cleaner that caused such early engine wear in carriers in the north african desert campaign. Nigel Watsons book mentioned that The life of an engine was as low as 2 to 3 thousand miles. Trucks were probably not much better.
Thanks for the pictures.
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Bluebell Carrier Armoured O.P. No1 Mk3 W. T84991 Carrier Bren No2.Mk.I. NewZealand Railways. NZR.6. Dodge WC55. 37mm Gun Motor Carriage M6 Jeep Mb #135668 So many questions.... Last edited by Lynn Eades; 02-08-13 at 02:58. 
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