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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Concentric Mk1 Fuel Starvation
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<blockquote data-quote="tractorman414" data-source="post: 11625" data-attributes="member: 244"><p><strong>concentrics transformed</strong></p><p></p><p>I know this is an old thread, but I came across it when searching info on Mk 1 concentrics. I fitted 32 mm carbs to my Shadow, some years ago, after Bob Dunn had ported the heads and flanged adaptors, but I never got it to run well. I had other problems, resultant of fitting Carrillo rods and not balancing the crank [32% balance factor, the vibration was evil], however, that solved and the bike back together, I carried out the mods referred to in both the "Bushmans carb tuning secrets" <a href="http://www.jba.bc.ca/Bushmans%20Carb%20Tuning.html" target="_blank">http://www.jba.bc.ca/Bushmans Carb Tuning.html</a></p><p>and "performanceindian". <a href="http://www.performanceindian.com/VinAmalMods.html" target="_blank">http://www.performanceindian.com/VinAmalMods.html</a></p><p></p><p>The bike is truly transformed.</p><p></p><p>If you don’t want to read the full details, I would briefly summerise.</p><p></p><p>Set the float levels correctly</p><p>install interchangeable pilot jets in the roof of the float chamber</p><p>drill out the fixed pilot jet. [Easier from fuel side, so fit blanking screw opposite air screw]</p><p>cut away the back of the spray tube</p><p></p><p>I used the basic setting recommended by performanceindian</p><p></p><p>Bernard Jones</p><p>Dorset Section</p></blockquote><p></p>
[QUOTE="tractorman414, post: 11625, member: 244"] [b]concentrics transformed[/b] I know this is an old thread, but I came across it when searching info on Mk 1 concentrics. I fitted 32 mm carbs to my Shadow, some years ago, after Bob Dunn had ported the heads and flanged adaptors, but I never got it to run well. I had other problems, resultant of fitting Carrillo rods and not balancing the crank [32% balance factor, the vibration was evil], however, that solved and the bike back together, I carried out the mods referred to in both the "Bushmans carb tuning secrets" [url]http://www.jba.bc.ca/Bushmans%20Carb%20Tuning.html[/url] and "performanceindian". [url]http://www.performanceindian.com/VinAmalMods.html[/url] The bike is truly transformed. If you don’t want to read the full details, I would briefly summerise. Set the float levels correctly install interchangeable pilot jets in the roof of the float chamber drill out the fixed pilot jet. [Easier from fuel side, so fit blanking screw opposite air screw] cut away the back of the spray tube I used the basic setting recommended by performanceindian Bernard Jones Dorset Section [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Concentric Mk1 Fuel Starvation
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