Fitting Injectors
Page 54
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THIS week's prizewinner is Mr. W. G. Piper, of East Sheen, London SWI4. He says that if injectors are fitted to clean seatings in the cylinder heads there should be no trouble with leaks and sheared studs.
A wire brush can be made that will reach tbese seatings. Six bunches of wires, 11 in. long extracted from a new wire brush, are fitted axially in the end of 12 in. of 1 in.diameter broomstick. A sliding tube covers the wires to guide them into the cylinder head. A shoulder on the tube retracts it from the wires and a slot and peg locates it during withdrawal.
A 9 mm.-diameter rod in the centre of the brush fills the nozzle hole and concentrates the wires on the seating. It has a shoulder to prevent it being left in the nozzle hole. The rod can be pushed inwards when the wires are trued up on a grinding wheel. A jet of air is useful to remove oil from the seating and to clean the brush.