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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Do Series A singles have sumping problems?
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<blockquote data-quote="b'knighted" data-source="post: 54631" data-attributes="member: 59"><p>I've been fiddling again.</p><p></p><p>Having sorted out what I want to do for the feed pipe I decided that it would be clever to modify the feed banjo bolt on the top front of the oil pump. My idea was to drill and tap it like the drain banjo bolts available for post-war bikes so that I could pump priming oil into the pump and possibly suck oil down through the anti drain valve to fill the feed pipe. As I looked at the bits and pieces I saw that the rear top banjo bolt, pressure feed to the engine?, was already tapped and plugged with an Allen screw and locknut.</p><p>Is this standard or in any way common, or does it sound as if the previous owner has already modified it to facilitate priming?</p><p></p><p>I've removed the oil tank to wash it out and now wonder whether the recommendations for the next fill of oil are the same as for post-war bikes or whether the original mono-grade recommendations should be followed with As?</p></blockquote><p></p>
[QUOTE="b'knighted, post: 54631, member: 59"] I've been fiddling again. Having sorted out what I want to do for the feed pipe I decided that it would be clever to modify the feed banjo bolt on the top front of the oil pump. My idea was to drill and tap it like the drain banjo bolts available for post-war bikes so that I could pump priming oil into the pump and possibly suck oil down through the anti drain valve to fill the feed pipe. As I looked at the bits and pieces I saw that the rear top banjo bolt, pressure feed to the engine?, was already tapped and plugged with an Allen screw and locknut. Is this standard or in any way common, or does it sound as if the previous owner has already modified it to facilitate priming? I've removed the oil tank to wash it out and now wonder whether the recommendations for the next fill of oil are the same as for post-war bikes or whether the original mono-grade recommendations should be followed with As? [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Do Series A singles have sumping problems?
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