Thanks, dudes. thanks John, for reviving this from Page 2 with 0 replies. All are great ideas. I sure does not sound like intake popping but I'll look at the WUR/DV conspiracy. It sounds like exhaust popping.
I know that intake popping is a lean mixture deal. I also believe that exhaust popping means air is getting into the exhaust. As far as I know it does.
I put the wet rag in the exhaust pipe and there is no exhaust leak. I did notice that exhaust gasses and their surrounding pipes get hot in a hurry but I knew that. The engine sounds pretty interesting without all that exhaust noise. It's like you can hear every part working.
Again, I sealed the last three exhaust gaskets, but was wondering about the gaskets at the exhaust ports. I had expected that any leak there would spit during acceleration. In my experience intake manifold leaks cause spitting, particularly on acceleration, and particularly also when cold. But recently I have been told they may not spit. Well anyway, the issue is settled. There apparently is no exhaust leak. Every joint was whisper quiet on cold engine.
I now believe air is getting past valve guides. Could be either exhaust or intake, since there is great pressure on both. I think I need to just take a look at those heads lined up on a bench.
BTW, there is a Superhero Support Group and the guy with the big brain told me he thinks the beautiful blue startup clouds may be caused by intake valve guides allowing oil into the cylinder. Rather than a ring problem. I tend to agree. We superheros have to stick together. Also, I have valves that tick no matter what.
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'83 SC
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