Hi, I have a '72 bus with 220K miles that had been running OK (not great) and is due for a rebuild, but I'm trying to limp on through windsurfing season before I take it out of commission for the rebuild (which will probably take me quite a while). I stuck a new 009 distributor in it, and it works OK around town, except that it backfires fairly often, and misses at speeds over 60 or so. With the previous distributor, I could happily cruise at 65-75+. My editions of Muir say just that the vacuum advance distributor is bogus (thus my switch to the 009), but don't give a timing setting for the mechanical advance distrib. Do any of you know the correct (or even a better) timing setting for my configuration? The one for the vacuum advance distributor doesn't seem so good. Do you know how to determine a good setting? My guess was that the backfiring indicates too little advance or too much dwell, so I advanced it a couple of degrees, which isn't causing knocking or overheating, but isn't helping much either. The other possibly relevant info is that it's engine code CB, has a single Weber carb (installed by PO), and a fine Mexican not-too-muffling muffler. Thanks, Dennis
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