R100 RS (1982) unleaded fuel mods
What modifications do I need to carry out to allow the use of unleaded in my 1982 R100RS, please. As it is, it pinks when I use unleaded (pre-ignition)-is it simply a matter of retiming-if so, can someone tell me the new setting? I'm told that the valve seats should be perfectly OK as the Germans and most of Europe had gone over to unleaded well before the UK did. Following the demise of four-star I've been using LRP and, more recently, an additive, Redex Lead Replacement, but the valve clearances have stayed OK, and neither does it pink.
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Johnefyn
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Johnef
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