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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Conways Anti Sumping Valve on Twin start pumps
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<blockquote data-quote="Big Sid" data-source="post: 43821" data-attributes="member: 2781"><p>On the matter of your oil pump allowing the sump level to rise too quickly . This is due generally to a loose fit between the inner shuttle and the bronze housing . I have successfully swapped the old inner moving member to one having a snugger fit and the problem ceased . This can be done quite easily with no need to break the motor down . In fact the entire pump , housing and all can be swapped without parting the cases . </p><p> But an anti sumping valve from Conways solves the entire problem nicely . Three of our motors use valves designed and built by </p><p> Bill Jean which have been doing their job perfectly for years . Never a problem . Sid .</p></blockquote><p></p>
[QUOTE="Big Sid, post: 43821, member: 2781"] On the matter of your oil pump allowing the sump level to rise too quickly . This is due generally to a loose fit between the inner shuttle and the bronze housing . I have successfully swapped the old inner moving member to one having a snugger fit and the problem ceased . This can be done quite easily with no need to break the motor down . In fact the entire pump , housing and all can be swapped without parting the cases . But an anti sumping valve from Conways solves the entire problem nicely . Three of our motors use valves designed and built by Bill Jean which have been doing their job perfectly for years . Never a problem . Sid . [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Conways Anti Sumping Valve on Twin start pumps
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