nawlins-tim
Member
I have a fresh build that is showing oil on the plugs. Its a 400 sbc new pistons and rings. New profiler 195 heads.Right after cam break in ( flat tappet ) I checked a couple plugs and all showed heavy black oil. But I chalked it up to rings not seated. Made my first trip out. Ran it up to 4500 a few times and a couple to 5500. It ran cool and no leaks. Drove to the parts store one day and came home , with hood up I noticed what looked like steam or light smoke from both breathers. At that point I figured I needed a proper PCV system. Checked the oil and looked good .NO WATER. But plugs still oilly. This time I figured the rings needed a hard run in. Ran the snot out of it shifting at 6000 through all gears. Checked oil was down a half a quart.
Leak down shows under 5 percent across all but the one cylinder that I could not reach due to the headers. Still showing light smoke from unpluged pcv and oil on plugs but didnt add oil in at least 100 miles of driving.
Gonna pull the carb to look down the runners for possible leaking intake. Not sure where to go next. Thought I covered the bases on this motor. Had a pro build the bottom end. Hope a re-ring isn't in my future.
What would you do ???
Leak down shows under 5 percent across all but the one cylinder that I could not reach due to the headers. Still showing light smoke from unpluged pcv and oil on plugs but didnt add oil in at least 100 miles of driving.
Gonna pull the carb to look down the runners for possible leaking intake. Not sure where to go next. Thought I covered the bases on this motor. Had a pro build the bottom end. Hope a re-ring isn't in my future.
What would you do ???