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jcd9730 · 09-15-2013, 10:42 PM

I know pinging at WOT has nada to do with vacuum advance, and I had set the mixture to 2 1/2 turns to rule out leanness as a cause of pinging. I ended up with 4degrees initial and i think it was 26 total? Heaviest weights too.

???

Only way it would not ping. I am positive my TDC is right, because when I changed the HG I checked it

So I added 10 degrees advance from vacuum to put initial at idle to 14. Is this a good idea? Runs fine, though I didnt drive it much. But importantly, does not ping

09-15-2013, 10:42 PM	#35
jcd9730 Registered User Join Date: Jan 2013 Location: Anaheim, CA Posts: 263	Re: Question for all those on manifold vacuum I know pinging at WOT has nada to do with vacuum advance, and I had set the mixture to 2 1/2 turns to rule out leanness as a cause of pinging. I ended up with 4degrees initial and i think it was 26 total? Heaviest weights too. ??? Only way it would not ping. I am positive my TDC is right, because when I changed the HG I checked it So I added 10 degrees advance from vacuum to put initial at idle to 14. Is this a good idea? Runs fine, though I didnt drive it much. But importantly, does not ping __________________ Josh 72 C10, 350/2004r, Porter Steel Pacs, and 40+ years of leftovers from strange POs...