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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
BTH Electronic Mag Timing Comet -Q?
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<blockquote data-quote="macvette" data-source="post: 120021" data-attributes="member: 262"><p>Sorry to say this but the "crap supermarket fuel" is a myth. There are six refineries operating in the UK. They supply fuel to their own outlets and supermarkets. The octane rating of all grades both own brands and supermarket is the same so 95 octane or 99 octane is the same in either outlet. These ratings are tested post production by the refineries using variable compression single cylinder test engines. So the choice of branded vs supermarket fuels of the same octane rating will not affect ignition timing or performance on road bikes of the age of ours. </p><p>I didnt work for supermarkets or oil refiners, but I did spend 40 yrs in the oil and gas industry engineering,building and comissioning these facilites including some of the biggest in the world so this isnt something I"ve googled. </p><p>Sorry, didnt mean to hijack the thread. The basic message is its the octane rating of fuel and compression ratio of the motor which determines the ignition timing.</p></blockquote><p></p>
[QUOTE="macvette, post: 120021, member: 262"] Sorry to say this but the "crap supermarket fuel" is a myth. There are six refineries operating in the UK. They supply fuel to their own outlets and supermarkets. The octane rating of all grades both own brands and supermarket is the same so 95 octane or 99 octane is the same in either outlet. These ratings are tested post production by the refineries using variable compression single cylinder test engines. So the choice of branded vs supermarket fuels of the same octane rating will not affect ignition timing or performance on road bikes of the age of ours. I didnt work for supermarkets or oil refiners, but I did spend 40 yrs in the oil and gas industry engineering,building and comissioning these facilites including some of the biggest in the world so this isnt something I"ve googled. Sorry, didnt mean to hijack the thread. The basic message is its the octane rating of fuel and compression ratio of the motor which determines the ignition timing. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
BTH Electronic Mag Timing Comet -Q?
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