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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
answers on a postcard please...................
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<blockquote data-quote="Comet" data-source="post: 43714" data-attributes="member: 137"><p>I need some help and advice please.</p><p></p><p>The Comet outfit was suffering on it's way back from the Dutch rally. A large amount of oil was being lost out of the breather. We thought it must have been a piston ring causing crankcase pressure. Today Dave and I stripped it down and the rings all seem okay. The bore seems to be okay as well. Valves seemingly are good. The bike was doing well for power but lost about 1 pint of oil in approx. 60 miles. We had by-passed the timed breather and instead just ran a breather from the top pushrod cap to a catch tank.</p><p>So ladies and gents. Any ideas as to what may be causing the problem. It seems to be some sort of crankcase pressure. The bike is not really burning much oil at all.</p><p></p><p>thank you in advance.</p><p></p><p>John</p></blockquote><p></p>
[QUOTE="Comet, post: 43714, member: 137"] I need some help and advice please. The Comet outfit was suffering on it's way back from the Dutch rally. A large amount of oil was being lost out of the breather. We thought it must have been a piston ring causing crankcase pressure. Today Dave and I stripped it down and the rings all seem okay. The bore seems to be okay as well. Valves seemingly are good. The bike was doing well for power but lost about 1 pint of oil in approx. 60 miles. We had by-passed the timed breather and instead just ran a breather from the top pushrod cap to a catch tank. So ladies and gents. Any ideas as to what may be causing the problem. It seems to be some sort of crankcase pressure. The bike is not really burning much oil at all. thank you in advance. John [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
answers on a postcard please...................
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