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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Cylinder Liner fit to crankcases
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<blockquote data-quote="Albervin" data-source="post: 38282" data-attributes="member: 586"><p>This is almost as recurrent as the "oil thread". Series A bikes (the original and the best) had to have the crankcase bolts backed off to remove the cylinder. Most Series A bikes had Iron barrels. Postwar bikes were all alloy and it was advised that there should be light interference fit between liner and crankcase. Think about it; IF there is a compression of the liner in the crankcase mouth it could reduce the interference fit of liner and muff at the base and lead to poor heat transference and distortion leading to a possible seizure. Then again I am a chemist not an engineer. My liners have about half a thou interference fit in the crankcase mouth, fitted 12 years ago, many thousands of miles, no leaks. Several people who have bought liners from the VOCS recently have thrown them into the bin. There is a problem there! I understand that certain Jaguar liners are suitable for purpose.</p></blockquote><p></p>
[QUOTE="Albervin, post: 38282, member: 586"] This is almost as recurrent as the "oil thread". Series A bikes (the original and the best) had to have the crankcase bolts backed off to remove the cylinder. Most Series A bikes had Iron barrels. Postwar bikes were all alloy and it was advised that there should be light interference fit between liner and crankcase. Think about it; IF there is a compression of the liner in the crankcase mouth it could reduce the interference fit of liner and muff at the base and lead to poor heat transference and distortion leading to a possible seizure. Then again I am a chemist not an engineer. My liners have about half a thou interference fit in the crankcase mouth, fitted 12 years ago, many thousands of miles, no leaks. Several people who have bought liners from the VOCS recently have thrown them into the bin. There is a problem there! I understand that certain Jaguar liners are suitable for purpose. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Cylinder Liner fit to crankcases
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