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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Friendly chap with huge kickstart foot required!
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<blockquote data-quote="Phil Baker" data-source="post: 32456" data-attributes="member: 2693"><p><span style="font-family: 'Times'"><span style="font-size: 15px">Well, here we go again.... Having ground the head/barrel/liner joint and reassembled the engine I have just put the front back on the Comet so it looks like a bike again, shimmed up the timing chest (Stumpy advising - we removed nearly all the shims and strange washers that were fitted by the previous sinner) refitted all cables, fitted the timing chest cover - I have polished it to a high shine so it looks nice and would obviously make the bike run so much better .. or even run at all (old gasket, no compound, just in case....), fitted the sparkplug and the Enfield mod decompressor ............................... turned the engine over gently with the kickstart (I'd done this earlier before I reassembled it all to make sure that the piston was not hitting the valves) and................ no compression at all.... not a bit!</span></span></p><p><span style="font-family: 'Times'"><span style="font-size: 15px"></span></span></p><p><span style="font-family: 'Times'"><span style="font-size: 15px">I loosened off the tappets to about 5mm clearance and tried again. Still no compression.</span></span></p><p><span style="font-family: 'Times'"><span style="font-size: 15px"></span></span></p><p><span style="font-family: 'Times'"><span style="font-size: 15px">Last night I drank too much whisky.</span></span></p><p><span style="font-family: 'Times'"><span style="font-size: 15px"></span></span></p><p><span style="font-family: 'Times'"><span style="font-size: 15px">Today I will be :</span></span></p><p><span style="font-family: 'Times'"><span style="font-size: 15px"></span></span></p><p><span style="font-family: 'Times'"><span style="font-size: 15px">Removing the decompressor and fitting a second spark plug in the hole to see if the decompressor is at fault.</span></span></p><p><span style="font-family: 'Times'"><span style="font-size: 15px"></span></span></p><p><span style="font-family: 'Times'"><span style="font-size: 15px">Removing the tappets completely and turning the engine over to see if there is compression with no valve opening at all whilst trying to avoid bending another pushrod.</span></span></p><p> <span style="font-family: 'Times'"><span style="font-size: 15px"></span></span></p><p><span style="font-family: 'Times'"><span style="font-size: 15px">And I may well find myself doing the valve timing again just for the sheer enjoyment of it........</span></span></p><p><span style="font-family: 'Times'"><span style="font-size: 15px"></span></span></p><p><span style="font-family: 'Times'"><span style="font-size: 15px">Such fun!</span></span></p><p> <span style="font-family: 'Times'"><span style="font-size: 15px"></span></span></p><p><span style="font-family: 'Times'"><span style="font-size: 15px">Also, even with new springs and a lot of WD40 the ATD is reluctant to return to the fully closed position. Anyone got a bigger hammer? </span></span></p><p><span style="font-family: 'Times'"><span style="font-size: 15px"></span></span></p><p><span style="font-family: 'Times'"><span style="font-size: 15px">Regards to all</span></span></p><p><span style="font-family: 'Times'"><span style="font-size: 15px"></span></span></p><p><span style="font-family: 'Times'"><span style="font-size: 15px">Phil</span></span></p></blockquote><p></p>
[QUOTE="Phil Baker, post: 32456, member: 2693"] [FONT=Times][SIZE=4]Well, here we go again.... Having ground the head/barrel/liner joint and reassembled the engine I have just put the front back on the Comet so it looks like a bike again, shimmed up the timing chest (Stumpy advising - we removed nearly all the shims and strange washers that were fitted by the previous sinner) refitted all cables, fitted the timing chest cover - I have polished it to a high shine so it looks nice and would obviously make the bike run so much better .. or even run at all (old gasket, no compound, just in case....), fitted the sparkplug and the Enfield mod decompressor ............................... turned the engine over gently with the kickstart (I'd done this earlier before I reassembled it all to make sure that the piston was not hitting the valves) and................ no compression at all.... not a bit! I loosened off the tappets to about 5mm clearance and tried again. Still no compression. Last night I drank too much whisky. Today I will be : Removing the decompressor and fitting a second spark plug in the hole to see if the decompressor is at fault. Removing the tappets completely and turning the engine over to see if there is compression with no valve opening at all whilst trying to avoid bending another pushrod. And I may well find myself doing the valve timing again just for the sheer enjoyment of it........ Such fun! Also, even with new springs and a lot of WD40 the ATD is reluctant to return to the fully closed position. Anyone got a bigger hammer? Regards to all Phil[/SIZE][/FONT] [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Friendly chap with huge kickstart foot required!
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