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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Oil Return Pipe Question
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<blockquote data-quote="davidd" data-source="post: 117177" data-attributes="member: 1177"><p>3/8" sound about right for the hole that the pipe fits into. I would think that the holes in the block are drilled to 3/8", which would be perfect for slipping the return pipe into. This should allow a pipe to be inserted in the hole with somewhere near the correct ID for good oil flow. I would think that the Norton should be roughly the same size. A smaller ID does cause a slight restriction, but the oil will move faster through the smaller size tubing. The viscosity of the oil you run will also determine how much restriction there is in the system.</p><p></p><p>The locking rocker feed bolts should have no problem with an increased supply of oil passing by. It is always good to make sure that the area around the guides drains well. It does not sound like the pipes or any restriction should cause problems.</p><p></p><p>David</p></blockquote><p></p>
[QUOTE="davidd, post: 117177, member: 1177"] 3/8" sound about right for the hole that the pipe fits into. I would think that the holes in the block are drilled to 3/8", which would be perfect for slipping the return pipe into. This should allow a pipe to be inserted in the hole with somewhere near the correct ID for good oil flow. I would think that the Norton should be roughly the same size. A smaller ID does cause a slight restriction, but the oil will move faster through the smaller size tubing. The viscosity of the oil you run will also determine how much restriction there is in the system. The locking rocker feed bolts should have no problem with an increased supply of oil passing by. It is always good to make sure that the area around the guides drains well. It does not sound like the pipes or any restriction should cause problems. David [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Oil Return Pipe Question
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