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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Oil change with anti sumping valve
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<blockquote data-quote="ericg" data-source="post: 119951" data-attributes="member: 160"><p>Never seen this type of valve but I have a ball and spring ASV on my Commando for about 30 years and 50 000 miles with no problems so far. An oil pressure gauge is fitted between speedo and tacho as a safety checking device.</p><p>Same on the Norvin twin, ASV from Conway's for 10 years and 25 000 miles, no problems neither. Checking device is a piece of clear pipe on the return line as Egli practice.</p><p>These are facts so an ASV will be fitted to the Comet as well when it's ready. I think the key is air tightness between valve and pump.</p><p>They were factory fitted on Velocette. Any Velocette owner here to let us know if there are recurrent problems with them?</p></blockquote><p></p>
[QUOTE="ericg, post: 119951, member: 160"] Never seen this type of valve but I have a ball and spring ASV on my Commando for about 30 years and 50 000 miles with no problems so far. An oil pressure gauge is fitted between speedo and tacho as a safety checking device. Same on the Norvin twin, ASV from Conway's for 10 years and 25 000 miles, no problems neither. Checking device is a piece of clear pipe on the return line as Egli practice. These are facts so an ASV will be fitted to the Comet as well when it's ready. I think the key is air tightness between valve and pump. They were factory fitted on Velocette. Any Velocette owner here to let us know if there are recurrent problems with them? [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Oil change with anti sumping valve
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