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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
ET35 to valve guide clearance
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<blockquote data-quote="BigEd" data-source="post: 126898" data-attributes="member: 161"><p>This is not a Vincent head but my friend had a project to make his two-valve pushrod Norton head into a four-valve. He machined out the combustion chamber and welded in an aluminium billet and then machined in the four ports. Likely you could not do this with a Vincent head but it does show that there are possible ways of changing a combustion chamber shape. We have a saying here, "There is more than one way of skinning a cat." (Apologies to cat lovers. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" />)</p><p>P.S. It does work and the engine is in a Featherbed frame and on the road.</p><p></p><p>[ATTACH=full]37074[/ATTACH]</p></blockquote><p></p>
[QUOTE="BigEd, post: 126898, member: 161"] This is not a Vincent head but my friend had a project to make his two-valve pushrod Norton head into a four-valve. He machined out the combustion chamber and welded in an aluminium billet and then machined in the four ports. Likely you could not do this with a Vincent head but it does show that there are possible ways of changing a combustion chamber shape. We have a saying here, "There is more than one way of skinning a cat." (Apologies to cat lovers. ;)) P.S. It does work and the engine is in a Featherbed frame and on the road. [ATTACH type="full"]37074[/ATTACH] [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
ET35 to valve guide clearance
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