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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Carburettor Resleeving
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<blockquote data-quote="Magnetoman" data-source="post: 140534" data-attributes="member: 2806"><p>A pre-Monobloc would require variations, but in several posts starting at the following I describe a better way to resleeve a carburetor.</p><p></p><p>[URL unfurl="true"]https://www.britbike.com/forums/ubbthreads.php/topics/583198/re-1957-bsa-spitfire-scrambler#Post583198[/URL]</p><p></p><p>The cheap and easy way to resleave a carburetor is to bore the carburetor and shrink a sleeve on the slide. However, if/when that slide or bore subsequently wears, or if you ever want to change the cutaway, you face a significant problem since the sleeved slide is "special" and so is not interchangeable with any other one. Instead, if you sleeve the bore as described in those posts, the carburetor is back to stock configuration.</p><p></p><p>Before anyone jumps in to say I should have just used a replacement carburetor, I'm trying to restore that particular motorcycle to as close to 100% factory-original condition as is possible, and the numbers stamped on its carburetor are unique to that small=production machine. I realize there's a strong contingent here that believe matching numbers are irrelevant, but I <em>desire</em> having matching numbers on this bike, and you can't argue with a desire.</p></blockquote><p></p>
[QUOTE="Magnetoman, post: 140534, member: 2806"] A pre-Monobloc would require variations, but in several posts starting at the following I describe a better way to resleeve a carburetor. [URL unfurl="true"]https://www.britbike.com/forums/ubbthreads.php/topics/583198/re-1957-bsa-spitfire-scrambler#Post583198[/URL] The cheap and easy way to resleave a carburetor is to bore the carburetor and shrink a sleeve on the slide. However, if/when that slide or bore subsequently wears, or if you ever want to change the cutaway, you face a significant problem since the sleeved slide is "special" and so is not interchangeable with any other one. Instead, if you sleeve the bore as described in those posts, the carburetor is back to stock configuration. Before anyone jumps in to say I should have just used a replacement carburetor, I'm trying to restore that particular motorcycle to as close to 100% factory-original condition as is possible, and the numbers stamped on its carburetor are unique to that small=production machine. I realize there's a strong contingent here that believe matching numbers are irrelevant, but I [I]desire[/I] having matching numbers on this bike, and you can't argue with a desire. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Carburettor Resleeving
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