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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Vincent pilgrim pump in comparison
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<blockquote data-quote="ClassicBiker" data-source="post: 111300" data-attributes="member: 1632"><p>I disagree with your assessment. It is not a feed hole for the pump. It is merely a hole that allows splash lubrication to access the worm. It does not feed oil to the return plunger. If it were the return pickup then the oil level in the crankcase would be over the main shafts, definitely a case of wet sumping. There are several threads here on the forum discussing modifying the lubrication system with a Honda pump. The modification is also outlined in the data bases <a href="https://www.vincentownersclub.co.uk/resources/a-new-oil-system-for-vincents.1708/" target="_blank">https://www.vincentownersclub.co.uk/resources/a-new-oil-system-for-vincents.1708/</a>. It is from these threads that I have taken the following images. Which show where the scavenge pump draws oil from to return it to the tank. In the data base and thread I took these images from, both take pains to explain that the modification draws oil from the same place as the standard pump, inside the crankcase not the timing chest. Again I re-iterate that hole plays no part in the oil scavenge. It does not feed the return plunger with oil. It merely allows splash lubrication of the worn gear.</p><p>I can not take credit for the illustration in my earlier post. That comes from <a href="http://www.thevincent.com" target="_blank">www.thevincent.com</a> . </p><p></p><p></p><p>[ATTACH=full]29238[/ATTACH][ATTACH=full]29239[/ATTACH]</p></blockquote><p></p>
[QUOTE="ClassicBiker, post: 111300, member: 1632"] I disagree with your assessment. It is not a feed hole for the pump. It is merely a hole that allows splash lubrication to access the worm. It does not feed oil to the return plunger. If it were the return pickup then the oil level in the crankcase would be over the main shafts, definitely a case of wet sumping. There are several threads here on the forum discussing modifying the lubrication system with a Honda pump. The modification is also outlined in the data bases [URL]https://www.vincentownersclub.co.uk/resources/a-new-oil-system-for-vincents.1708/[/URL]. It is from these threads that I have taken the following images. Which show where the scavenge pump draws oil from to return it to the tank. In the data base and thread I took these images from, both take pains to explain that the modification draws oil from the same place as the standard pump, inside the crankcase not the timing chest. Again I re-iterate that hole plays no part in the oil scavenge. It does not feed the return plunger with oil. It merely allows splash lubrication of the worn gear. I can not take credit for the illustration in my earlier post. That comes from [URL='http://www.thevincent.com']www.thevincent.com[/URL] . [ATTACH type="full" alt="1518411383427.png"]29238[/ATTACH][ATTACH type="full" alt="cam_spindle_mod(4).jpg"]29239[/ATTACH] [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Vincent pilgrim pump in comparison
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