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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
B cylinder oil hole vs C cylinder oil hole
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<blockquote data-quote="timetraveller" data-source="post: 54114" data-attributes="member: 456"><p>Craig, I am not sure that I understand the problem. The 'C' barrel you show has had the 'groove' cut too wide. There is no need for more than a slot or groove about 3/32 wide. As for how far down it should extend then if you have access to the engine with the barrel removed just measure the distance from the top of the opening in the crankcase to where the oil hole comes out of the back of the spindle. Whether it is a 'B' or a 'C' the same applies. All you are trying to do is to ensure that the oil coming out of the back of the spindle can get to hole through the back of the liner. It should be fairly obvious what you are trying to achieve which is why I wonder whether I have understood your query correctly. Just to put your mind to rest some of the best Vincent racers do not use the oil hole in the back of the liner at all so it is probably not critical.</p></blockquote><p></p>
[QUOTE="timetraveller, post: 54114, member: 456"] Craig, I am not sure that I understand the problem. The 'C' barrel you show has had the 'groove' cut too wide. There is no need for more than a slot or groove about 3/32 wide. As for how far down it should extend then if you have access to the engine with the barrel removed just measure the distance from the top of the opening in the crankcase to where the oil hole comes out of the back of the spindle. Whether it is a 'B' or a 'C' the same applies. All you are trying to do is to ensure that the oil coming out of the back of the spindle can get to hole through the back of the liner. It should be fairly obvious what you are trying to achieve which is why I wonder whether I have understood your query correctly. Just to put your mind to rest some of the best Vincent racers do not use the oil hole in the back of the liner at all so it is probably not critical. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
B cylinder oil hole vs C cylinder oil hole
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