Dodge and Seddon to Fit New Perkins 5-litre Engine
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T the Scottish Motor Show in Glasgow from November 13-21, a new oil engine manufactured by :kins Engines, Ltd., Peterborough, I be displayed on the Dodge and 'don stands. The engine, a 5-litre 5 Cu. in.) unit known as the Six i, will be fitted to a forward-control ,dge 6-tonner and shown as a arate exhibit by Seddon. It is to be ;tandard option for both forwardI normal-control Dodge 5and onners and for the Seddon 7-ton ige.
e unit is basically similar to the 5 engine which has been fitted in ner 4-, 5and 6-ton forward-control Is and in the Karrier Gamecock September, 1958. In the Commer Karrier applications it is laid on its it an angle of 24 degrees from the ontal for underseat mounting. The 05 is a vertical unit.
s similar in design and construction long-established Perkins P6, having linders of 5-in, stroke and ineorporthe Perkins combustion system gives a compromise between dircct indirect injection. However, the ler-bore size is increased from . to 3.6 in. to raise the capacity from to 5 litres, and chromium-plated vall cylinder liners are fitted as ard to improve the life of the bores. flange-mounted C.A.V. distributor type injection pump is used for the Six 305 and the fuel lift-pump is driven by a cam gear interposed between the exhauster and the injection pump, which are in tandem. The lubrication system provides positive force-feed oiling for the engine auxiliaries, and the water-pump impeller design is improved to prevent cavitation of the coolant at high engine speeds—the Six 305 runs at up to 2.600 r.p.m. A. C.A.V. Thermostart cold starting aid is fitted 4 in the induction manifold.
Less starter and flywheel, but complete with all other engine auxiliaries. the Six 305 weighs 700 lb. In overall
size it does not differ greatly from the P6 and normally can be incorporated in any chassis which will accept the lowerpowered engine. It is 2 ft. 911 in. long from the front of the fan to the rear of the crankshaft flange, 1 ft. 111 in. wide and 2 ft. 8',11 in. high.
Gross output for the Six 305 is 89 b.h.p. at 2,600 r.p.m. With the exhauster, dynamo (on charge) and 17-in.-diameter six-bladed fan being driven, the net output is 83 b.h.p. at the same speed. Maximum torque is developed at engine speeds between 1,250-1,500 r.p.m. and is 218 lb. ft. gross and 210 lb, ft. net.