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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Cometic timing cover gasket and quill clearance
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<blockquote data-quote="Marcus Bowden" data-source="post: 92003" data-attributes="member: 3287"><p>I believe the Cometic gaskets are quite thick ! Fit rubber seals one at a time and check that you have pressure against them say 1/16" or 2mm so when the cover is finally fitted the seals are compressed to seal, on my bike I have an extra oil pump for feeding cam rail with no restrictors and feed to cylinders blanked (no hole in rubber) 2 bar / 30 psi to cams at start up and reduces to 1 bar / 15 psi when warm in 10 miles or so. Same cams for over 300,000 miles ! Oil is fed through the cam and "squirts" under cam followers just prior to the lifting of follower. Not all cams produced have that hole in the face, beware. The spindles being fitted with with lube holes upwards then ground with a groove anti clock wise so that oil is allowed to flow earlier. Not all spindles have holes in line with each cam,(a little grind through the case hardening then drill into hollow spindle. The bush on cam end does not reach exhaust cam so push in another bush and drill though bush. this will stop oil being squirted needlessly on the full rotation of cam. Long-levity is the game, but the bloody bike will still be going many years after I've ceased functioning.</p><p>bananaman</p></blockquote><p></p>
[QUOTE="Marcus Bowden, post: 92003, member: 3287"] I believe the Cometic gaskets are quite thick ! Fit rubber seals one at a time and check that you have pressure against them say 1/16" or 2mm so when the cover is finally fitted the seals are compressed to seal, on my bike I have an extra oil pump for feeding cam rail with no restrictors and feed to cylinders blanked (no hole in rubber) 2 bar / 30 psi to cams at start up and reduces to 1 bar / 15 psi when warm in 10 miles or so. Same cams for over 300,000 miles ! Oil is fed through the cam and "squirts" under cam followers just prior to the lifting of follower. Not all cams produced have that hole in the face, beware. The spindles being fitted with with lube holes upwards then ground with a groove anti clock wise so that oil is allowed to flow earlier. Not all spindles have holes in line with each cam,(a little grind through the case hardening then drill into hollow spindle. The bush on cam end does not reach exhaust cam so push in another bush and drill though bush. this will stop oil being squirted needlessly on the full rotation of cam. Long-levity is the game, but the bloody bike will still be going many years after I've ceased functioning. bananaman [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Cometic timing cover gasket and quill clearance
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