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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Different front and rear head intake port dimensions..
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<blockquote data-quote="greg brillus" data-source="post: 32734" data-attributes="member: 597"><p>Hi there Charles, I had the same issue with a Shadow about two years ago where one head had an oversize port and the other standard at around the usual 1 1/8 inches in diammeter using original carb's and manifolds. It seemed to run fine at that, i can only guess that if you had the throttle open almost fully, then maybe the cylinder with the larger port may have more output and effectively drag the other cylinder along as best it can.....truth be known, how often does one have a twin on full throttle for any great period of time....I'd just put it together as is making sure that the head with the large port has a manifold to head gasket that covers/ seals both surfaces and you should be fine....cheers for now....Greg.</p></blockquote><p></p>
[QUOTE="greg brillus, post: 32734, member: 597"] Hi there Charles, I had the same issue with a Shadow about two years ago where one head had an oversize port and the other standard at around the usual 1 1/8 inches in diammeter using original carb's and manifolds. It seemed to run fine at that, i can only guess that if you had the throttle open almost fully, then maybe the cylinder with the larger port may have more output and effectively drag the other cylinder along as best it can.....truth be known, how often does one have a twin on full throttle for any great period of time....I'd just put it together as is making sure that the head with the large port has a manifold to head gasket that covers/ seals both surfaces and you should be fine....cheers for now....Greg. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Different front and rear head intake port dimensions..
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