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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Push rod tubes
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<blockquote data-quote="Cyborg" data-source="post: 130544" data-attributes="member: 3426"><p>Try tossing the PCV valve and install a reed valve. You should be able to source one from from the local junk yard. The upside to the junkyard ( or rather motorcycle breaker) is you get to see what different manufacturers are using and could buy the accompanying puke tank which might simplify separating and returning oil. Or maybe order one of the aftermarket ones for a Ducati. If it moves enough air for a big twin, the should be more than enough for the Comet. Maybe it’s time to explore the world of vacuum pumps. Lots of challenges for a M/C. You could also try what some of the old school drag racers (and current aircraft folk) did and plumb the breather into the exhaust. The vacuum created pulls air out of the engine. The drag racers originally did it to reduce oil escaping, but subsequently discovered it created a little extra HP as well. Just not sure if it would upset whatever pipe/meg you are using. Plus you would still have to separate the oil or risk becoming unpopular. If you are running any sort of silencer, then it won’t work. Again... the old school drag racers discovered that when the noise restriction folk moved in. Once they were muffled, the vacuum pumps started to evolve.</p></blockquote><p></p>
[QUOTE="Cyborg, post: 130544, member: 3426"] Try tossing the PCV valve and install a reed valve. You should be able to source one from from the local junk yard. The upside to the junkyard ( or rather motorcycle breaker) is you get to see what different manufacturers are using and could buy the accompanying puke tank which might simplify separating and returning oil. Or maybe order one of the aftermarket ones for a Ducati. If it moves enough air for a big twin, the should be more than enough for the Comet. Maybe it’s time to explore the world of vacuum pumps. Lots of challenges for a M/C. You could also try what some of the old school drag racers (and current aircraft folk) did and plumb the breather into the exhaust. The vacuum created pulls air out of the engine. The drag racers originally did it to reduce oil escaping, but subsequently discovered it created a little extra HP as well. Just not sure if it would upset whatever pipe/meg you are using. Plus you would still have to separate the oil or risk becoming unpopular. If you are running any sort of silencer, then it won’t work. Again... the old school drag racers discovered that when the noise restriction folk moved in. Once they were muffled, the vacuum pumps started to evolve. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Push rod tubes
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