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Forums: Public Access
Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Valve Guides
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<blockquote data-quote="SteveO" data-source="post: 100138" data-attributes="member: 3636"><p>I recently experienced a "death rattle" from my Rapide while coming home from the club. I cut the engine, pulled over and got home via the AA. I have now stripped the top end of the engine and found the front exhaust guide loose in the head, when I push it in andout it makes the tapping noise that frightened me so much. Enclosed are photos comparing exhaust and inlet guides. There seems to be a locking ring missing off the exhaust, that is in pieces of phospor bronze which fell out when I removed the rocker I think. What is the prognosis? I presume I need an oversize guide and new lock ring and probably a new valve (and a machine shop to fit them), but is the well where the guide fits damaged also, will this need welding up?</p><p>[ATTACH=full]24100[/ATTACH]</p><p>For comparison, here is the inlet</p><p>[ATTACH=full]24101[/ATTACH]</p></blockquote><p></p>
[QUOTE="SteveO, post: 100138, member: 3636"] I recently experienced a "death rattle" from my Rapide while coming home from the club. I cut the engine, pulled over and got home via the AA. I have now stripped the top end of the engine and found the front exhaust guide loose in the head, when I push it in andout it makes the tapping noise that frightened me so much. Enclosed are photos comparing exhaust and inlet guides. There seems to be a locking ring missing off the exhaust, that is in pieces of phospor bronze which fell out when I removed the rocker I think. What is the prognosis? I presume I need an oversize guide and new lock ring and probably a new valve (and a machine shop to fit them), but is the well where the guide fits damaged also, will this need welding up? [ATTACH=full]24100[/ATTACH] For comparison, here is the inlet [ATTACH=full]24101[/ATTACH] [/QUOTE]
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The Series 'A' Rapide was known as the '********' Nightmare?
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Valve Guides
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