Bill wrote: "...While I'm not an expert in vacuum dynamics, I would think in this case that vacuum is vacuum..."
With the proviso that I am not an expert on this area either, I do think there is more to it than that. Based on vaguely recollected forum messages I've read over the years, you get a different vacuum at the carb as you do from the manifold - different strengths of vacuum at different combinations of revs and throttle. Some distributor set-ups are designed to work from carb vacuum, others from manifold, it's quite possibly different for the UK-spec SU-fed engines and the US-spec emission controlled engines. Some US-spec engines I think even had a vacuum retard rather than vacuum advance. The long and short of it is, I don't know the answer to your question, only that I don't think it's as easy as plugging your distributor to any old place where there will be a vacuum. Richard _______________________________________________ Support Team.Net http://www.team.net/donate.html [email protected] http://autox.team.net/mailman/listinfo/spitfires http://www.team.net/archive
