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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Breather back into oil tank
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<blockquote data-quote="davidd" data-source="post: 108306" data-attributes="member: 1177"><p>Little Honda is correct that there needs to be a separator inside the ufm if you are piping anything into it. The oil permeates the atmosphere inside the ufm and it will find its way out if you give it one.</p><p></p><p>In general, I don't think there is anything wrong with using the chain oiler tube, but it is probably too small to deal with the volume of blowby that most Vincent owners seem to run with. </p><p></p><p>If I remember correctly, the screw adjuster is a red herring. There is an equal size hole drilled into the block of the adjuster on the timing side that is barely visible. This is the breather hole that was designed to work on the Series B chain oiler with no adjuster. When the adjuster on a C is wide open, the oil will simply flow out this breather hole into the tank. I think this was done to prevent the chain oiler oil line from being pressurized. The chain oil hole takes whatever it can from the oil passing by on its way back to the tank. The adjuster screw simply lets more oil flow by the hole. Thus, closing the adjuster screw minimizes the oil going by the chain oiler hole, but it does not close it. The oil can come in through the timing side hole in the adjuster block just like it did in Series B's.</p><p></p><p>You can try this out by putting a plastic hose on the chain oiler end and blowing through it with the oil adjuster screw fully tightened. You will find no resistance as the air is flowing out the timing side hole. </p><p></p><p>[ATTACH=full]27565[/ATTACH]</p><p></p><p>David</p></blockquote><p></p>
[QUOTE="davidd, post: 108306, member: 1177"] Little Honda is correct that there needs to be a separator inside the ufm if you are piping anything into it. The oil permeates the atmosphere inside the ufm and it will find its way out if you give it one. In general, I don't think there is anything wrong with using the chain oiler tube, but it is probably too small to deal with the volume of blowby that most Vincent owners seem to run with. If I remember correctly, the screw adjuster is a red herring. There is an equal size hole drilled into the block of the adjuster on the timing side that is barely visible. This is the breather hole that was designed to work on the Series B chain oiler with no adjuster. When the adjuster on a C is wide open, the oil will simply flow out this breather hole into the tank. I think this was done to prevent the chain oiler oil line from being pressurized. The chain oil hole takes whatever it can from the oil passing by on its way back to the tank. The adjuster screw simply lets more oil flow by the hole. Thus, closing the adjuster screw minimizes the oil going by the chain oiler hole, but it does not close it. The oil can come in through the timing side hole in the adjuster block just like it did in Series B's. You can try this out by putting a plastic hose on the chain oiler end and blowing through it with the oil adjuster screw fully tightened. You will find no resistance as the air is flowing out the timing side hole. [ATTACH type="full"]27565[/ATTACH] David [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Breather back into oil tank
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