For future reference, it would have been better if you had titled this "ignition timing" rather than "cam timing" which is a lot different and much more involved.
A gentle suggestion, NOT a rebuke! Hang in there - that is how you learn this stuff!
--
George Downs Bartlesville, Oklahoma

Your engine can't use more than 33-34 degrees total advance; without knowing which distributor you have and what advance curve it might offer, the simplest way to get it timed is to rev the engine until the timing stops advancing, set it to 33 while still revved, and call it good. Your timing at idle might be 14 and it might be 22 - this is less important than total advance, and until you get into recurving the dizzy, it kind of doesn't really matter.

There are a few different vacuum distributors - some offer vacuum advance and others offer vacuum retard. Vac advance is kind of cool; vac retard is kind of useless and is best disabled.

I wouldn't time it by ear, as you may well end up with more or less advance than is ideal. Similarly, advancing until it pings and then backing off a couple degrees can easily result in overly advanced timing - I've seen engines that don't ping until total advance is up around 40 degrees, which none of these engines will benefit by.

Best,

Cameron
Rose City

For what it's worth....my B18 seems to like about 15-16deg so that's where i set it. I do use premium.
Dean

I'd say set it by ear , seems like you know where it runs best already. Start there , adjust your carbs for best running and then then fiddle a bit more with the timing for more best. As long as you are not way out of suggested ranges your ear is the the best tool you've got.