Reply to "Ignition, vacuum advance question"

panteradougMember

16 if it steady is about right. 18 would be perfect.

Turn up the distributor advance at idle and see if it goes up.

I would set the initial idle higher, like 16 and limit the total advance to 36. If it pings a little you could restrict the internal distribtor advance with a slip over sleeve on the advace limiting post.

It may not be the total advance that is causing a ping. It may be the rate at which it advances.

You should have full ignition advance at 2500 distributor rpm, 5,000 engine rpm. If it is in sooner then the octane of todays pump gas can't handle it.

8/30/084:55 AM

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