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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Petrol additives
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<blockquote data-quote="timetraveller" data-source="post: 24225" data-attributes="member: 456"><p>I used the Miller version of this which is also an octane booster. I found that I was having to slacken off the tappets about twice a year and when I took the heads off it was clear that the valve seats were eroding. However, be warned that what applies to one bike might not apply to others. In the Club we have a very knowledgeable member with both a PhD in automotive engineering and also a lifetime of experience with one of Britain's best known engine developers. He told me that it is possible to do a calculation including temperature, rpm etc in order to determine what the likely wear rate will be. Guess what! A Vin at about 2,000 - 3,000 rpm is just in the worst part of the wear profile and will erode it's valve seats more rapidly. Other bikes with different revs, temperatures etc might behave differently. I tend cruise at about 3,000 - 3,500 rpm, possibly slightly higher, whenever on the open road so if that is your normal usage then you can expect to get valve seat wear.</p></blockquote><p></p>
[QUOTE="timetraveller, post: 24225, member: 456"] I used the Miller version of this which is also an octane booster. I found that I was having to slacken off the tappets about twice a year and when I took the heads off it was clear that the valve seats were eroding. However, be warned that what applies to one bike might not apply to others. In the Club we have a very knowledgeable member with both a PhD in automotive engineering and also a lifetime of experience with one of Britain's best known engine developers. He told me that it is possible to do a calculation including temperature, rpm etc in order to determine what the likely wear rate will be. Guess what! A Vin at about 2,000 - 3,000 rpm is just in the worst part of the wear profile and will erode it's valve seats more rapidly. Other bikes with different revs, temperatures etc might behave differently. I tend cruise at about 3,000 - 3,500 rpm, possibly slightly higher, whenever on the open road so if that is your normal usage then you can expect to get valve seat wear. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Petrol additives
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