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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
hard valve seats
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<blockquote data-quote="oexing" data-source="post: 119581" data-attributes="member: 1493"><p>Vincent, my choice was 1.2379 high chrome steel, unhardened shrunk in. That is very durable since ten thousands of kilometers and allright for the Hunger device. But you can easily find lots at Ebay at low price or from Motor Service industry supplies , see below for more info. New standards seem to be sintered seats important for leadfree and liquid gas engines. But 2379 will do for me for life.</p><p> With the automatic 45 or 30 degrees feed in the Hunger boring head no valve lapping is required, the very light last cuts are perfect. I swivel the tool bit holder to get sort of multiple correction angles to achieve near radius shape joining the 45 seat, look at last photo.</p><p></p><p></p><p> Vic</p><p></p><p><a href="https://www.ebay.de/sch/i.html?_from=R40&_trksid=p2505460.m570.l1313.TR1.TRC0.A0.H0.Xventilsitzring.TRS0&_nkw=ventilsitzring&_sacat=0" target="_blank">Ebay valve seats</a></p><p></p><p>scroll down for downloads at</p><p><a href="https://www.ms-motorservice.de/produkte/produkte/ventilsitzringe/" target="_blank">Motorservice</a></p><p></p><p>cast iron Ford head machined with Hunger for 2379 steel seats:</p><p>[ATTACH=full]34264[/ATTACH]</p><p></p><p>[ATTACH=full]34265[/ATTACH]</p><p></p><p>[ATTACH=full]34266[/ATTACH]</p><p></p><p>[ATTACH=full]34267[/ATTACH]</p></blockquote><p></p>
[QUOTE="oexing, post: 119581, member: 1493"] Vincent, my choice was 1.2379 high chrome steel, unhardened shrunk in. That is very durable since ten thousands of kilometers and allright for the Hunger device. But you can easily find lots at Ebay at low price or from Motor Service industry supplies , see below for more info. New standards seem to be sintered seats important for leadfree and liquid gas engines. But 2379 will do for me for life. With the automatic 45 or 30 degrees feed in the Hunger boring head no valve lapping is required, the very light last cuts are perfect. I swivel the tool bit holder to get sort of multiple correction angles to achieve near radius shape joining the 45 seat, look at last photo. Vic [URL='https://www.ebay.de/sch/i.html?_from=R40&_trksid=p2505460.m570.l1313.TR1.TRC0.A0.H0.Xventilsitzring.TRS0&_nkw=ventilsitzring&_sacat=0']Ebay valve seats[/URL] scroll down for downloads at [URL='https://www.ms-motorservice.de/produkte/produkte/ventilsitzringe/']Motorservice[/URL] cast iron Ford head machined with Hunger for 2379 steel seats: [ATTACH type="full"]34264[/ATTACH] [ATTACH type="full"]34265[/ATTACH] [ATTACH type="full"]34266[/ATTACH] [ATTACH type="full"]34267[/ATTACH] [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
hard valve seats
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