Bored 0.030” over and reassembled with stock valve train using new seals and guides. I’m hoping it’s in the head as I intend to do the typical HCI upgrades in the future. Focused more on the body and paint right now.What’s a “basic rebuild”? I’m with Noobz in that this looks like a valve seal and/or valve guide issue. Are the heads stock and never touched?
Correct, no smoke and runs good. I did have an exhaust leak at the collector on that side, which is why I swapped in new headers.Run a compression test, toss in some new plugs although those don't look bad in a pic, send it. You said no smoke, runs good right?
It didn’t look like oil when I tried to wipe it with a paper towel, either. Just darker than every other port and shiny as if it was wet.You sure this is not a fuel mixture issue?
Suggest you run a compression check to verify it is not poor compression.
Does not look wet like oil would be.
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