> Your "timing by performance" method, only retarding enough
> to eliminate pinging is the same way I used to adjust the
> timing on my TR-3 when I couldn't get high enough octane
> for it's taste. The Bentley's manual even suggests you find
> a long gradual hill and adjust the timing for best elapsed
> time up the hill. Timing marks are still very helpful if the
> motor isn't running.
Yes, time up a hill is OK, but revs at the end of the
longest straight is pretty good, too. I got the best
tuning ever on my Rx7 by doing some laps at Watkins Glen,
and changing the timing a little at a time until I got
about 6800rpm at the braking point - that was the best
I could do. It had really good power after that, I haven't
touched the timing since.
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John R. Lupien
lupienj@wal.hp.com
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