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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Engine Intermittent Cutting Out of One Cylinder
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<blockquote data-quote="Rob H" data-source="post: 97770" data-attributes="member: 1913"><p>Rocker is wet and moves freely. I had the barrels off and pistons off, front and rear were pretty much identical. no scoring honing marks still present in some areas of the bore, only signs were slight wear to the rear of the piston which is to be expected I guess. It runs at cruising speed but, not perfectly happy with it as it does not feel as if it is running right.</p><p></p><p>The reason for looking for another head is that I understood that the wear caused by the loose guide was extensive and it was difficult to fix as a special oversize guide had to be used. I also asked the question at the time whether the valve and seat needed to be replaced as I thought the lateral movement would have damaged the seating on both but was told no.</p></blockquote><p></p>
[QUOTE="Rob H, post: 97770, member: 1913"] Rocker is wet and moves freely. I had the barrels off and pistons off, front and rear were pretty much identical. no scoring honing marks still present in some areas of the bore, only signs were slight wear to the rear of the piston which is to be expected I guess. It runs at cruising speed but, not perfectly happy with it as it does not feel as if it is running right. The reason for looking for another head is that I understood that the wear caused by the loose guide was extensive and it was difficult to fix as a special oversize guide had to be used. I also asked the question at the time whether the valve and seat needed to be replaced as I thought the lateral movement would have damaged the seating on both but was told no. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Engine Intermittent Cutting Out of One Cylinder
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