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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
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<blockquote data-quote="KennyNUT" data-source="post: 57419" data-attributes="member: 3057"><p>Thanks, Al, Martyn and Greg.</p><p></p><p>Martyn, I don't remember the explanation of your bike being a smoker, sorry to hear that, however, it sounds like you have a masterpiece on your hands, now. In fact I may have come across you on "You tube".</p><p></p><p>[MEDIA=youtube]EeruzItUDNI[/MEDIA]</p><p></p><p>Congratulations on a stunning bike. Great work. I do wish I had some engineering talent in my veins! Never mind I try to make the best of what I have got <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" /></p><p></p><p>Yes, all has gone well so far on this little adventure, which is officially my "Winter Project".</p><p></p><p>After a busy day in the garage and carefully packaging everything up last night I sat with some of the bike's history and found that the piston that went in in 1980 (34 years ago <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big Grin :D" loading="lazy" data-shortname=":D" />) as described in my first post in this thread was an oversize +0.020 ". The piston I found is as described and is +0.040" so I think the liner is original and just honed to accept the next oversize piston which is the "nearly new one (500 miles ago?)" that I encountered. When the rebuild begins I will ensure the gaps in the rings are 180 degrees apart, thanks for the observation, Greg. Its something I checked when I lifted off the barrel and liner. All was well.</p><p></p><p>I spoke with Simon Linford today and he will check all components in the head and review the condition of the liner. I have sent him pictures of the piston and will await any further request. He will also check the position of the oil hole in the liner which he highlighted as a problem sometimes, too. There is an indentation on the outside of the liner to indicate where that hole should be and it is positioned in there, so hopefully is correct. I will ask for the metering wires to be removed as once the head is checked, and rebuilt all should be well, should it not?</p><p></p><p>I actually put in the same photo of the liner twice in post #46. the second one is below and shows that indentation with the oil hole now on the top side:</p><p></p><p>[ATTACH=full]3282[/ATTACH]</p><p>Again, very nice condition (obviously without measurements) and honing marks obvious.</p><p></p><p>I guess there will always be differences in opinion over gaskets and seals. I just found the V3 advert in the August edition of MPH (must track down the later ones). It looks interesting but expensive at $85 AUD for the Comet. I have ordered the GASKET SEALANT - RHODORSIL from the spares company as well as stock (Mmmm) gasket replacements. Should I use one or other or both? Happy to absorb your advice on that. For the oil lines over the top of the engine, I was proposing to use fresh copper washers and a tiny drop of RHODORSIL on the top part of the bolt threads.</p><p></p><p>As suggested, I will retain all invoices as proof of "folding" spent. Of course that will be on a need to know basis only <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite6" alt=":cool:" title="Cool :cool:" loading="lazy" data-shortname=":cool:" />.</p><p></p><p>If I get a message from Simon Linford, I will update you guys and keep the thread going, if it is of any interest. After all, we don't have confirmation of the issue just yet!</p><p></p><p>Cheers, Kenny.</p></blockquote><p></p>
[QUOTE="KennyNUT, post: 57419, member: 3057"] Thanks, Al, Martyn and Greg. Martyn, I don't remember the explanation of your bike being a smoker, sorry to hear that, however, it sounds like you have a masterpiece on your hands, now. In fact I may have come across you on "You tube". [MEDIA=youtube]EeruzItUDNI[/MEDIA] Congratulations on a stunning bike. Great work. I do wish I had some engineering talent in my veins! Never mind I try to make the best of what I have got ;) Yes, all has gone well so far on this little adventure, which is officially my "Winter Project". After a busy day in the garage and carefully packaging everything up last night I sat with some of the bike's history and found that the piston that went in in 1980 (34 years ago :D) as described in my first post in this thread was an oversize +0.020 ". The piston I found is as described and is +0.040" so I think the liner is original and just honed to accept the next oversize piston which is the "nearly new one (500 miles ago?)" that I encountered. When the rebuild begins I will ensure the gaps in the rings are 180 degrees apart, thanks for the observation, Greg. Its something I checked when I lifted off the barrel and liner. All was well. I spoke with Simon Linford today and he will check all components in the head and review the condition of the liner. I have sent him pictures of the piston and will await any further request. He will also check the position of the oil hole in the liner which he highlighted as a problem sometimes, too. There is an indentation on the outside of the liner to indicate where that hole should be and it is positioned in there, so hopefully is correct. I will ask for the metering wires to be removed as once the head is checked, and rebuilt all should be well, should it not? I actually put in the same photo of the liner twice in post #46. the second one is below and shows that indentation with the oil hole now on the top side: [ATTACH=full]3282[/ATTACH] Again, very nice condition (obviously without measurements) and honing marks obvious. I guess there will always be differences in opinion over gaskets and seals. I just found the V3 advert in the August edition of MPH (must track down the later ones). It looks interesting but expensive at $85 AUD for the Comet. I have ordered the GASKET SEALANT - RHODORSIL from the spares company as well as stock (Mmmm) gasket replacements. Should I use one or other or both? Happy to absorb your advice on that. For the oil lines over the top of the engine, I was proposing to use fresh copper washers and a tiny drop of RHODORSIL on the top part of the bolt threads. As suggested, I will retain all invoices as proof of "folding" spent. Of course that will be on a need to know basis only :cool:. If I get a message from Simon Linford, I will update you guys and keep the thread going, if it is of any interest. After all, we don't have confirmation of the issue just yet! Cheers, Kenny. [/QUOTE]
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