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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
1951 Black Shadow Restoration
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<blockquote data-quote="davidd" data-source="post: 137515" data-attributes="member: 1177"><p>In general, check the rear timing-side studs. It is the spindles that carry oil to the piston skirts. The spindle has to deliver oil to the skirt and the oil passage has to get around the head stud. As a result, the spindle can be very near the stud, itself. A good test is to measure the spindle that was removed and compare its length to the length of the replacement spindle. If the used spindle has been shortened, it is likely that you will have to shorten the replacement.</p><p></p><p>Apologies for not knowing the twin specifically, but on the Comet it is the inlet follower stud. I had to shorten the one in my racer. I did not realize this until the replacement spindle would not go into the hot case far enough to be at the correct height to match the other spindles.</p><p></p><p>David</p></blockquote><p></p>
[QUOTE="davidd, post: 137515, member: 1177"] In general, check the rear timing-side studs. It is the spindles that carry oil to the piston skirts. The spindle has to deliver oil to the skirt and the oil passage has to get around the head stud. As a result, the spindle can be very near the stud, itself. A good test is to measure the spindle that was removed and compare its length to the length of the replacement spindle. If the used spindle has been shortened, it is likely that you will have to shorten the replacement. Apologies for not knowing the twin specifically, but on the Comet it is the inlet follower stud. I had to shorten the one in my racer. I did not realize this until the replacement spindle would not go into the hot case far enough to be at the correct height to match the other spindles. David [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
1951 Black Shadow Restoration
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