General engine tech -- Drag Racing to Circle Track
- Posts: 1363
- Joined: Fri Apr 08, 2016 9:50 am
If the new pistons were not the same brand and # and the rings not a different brand or # the problem might be being repeated, but I doubt that. I am leaning towards two possibilities for the ring problems, one end gaps to tight for that bore size and two those bores might look and measure straight when not under load but I suspect those cylinders might be two thin. Its possible the ring end gaps were just open enough that the rings gaps closed just slightly and the rings lost tension to the bores. What was the readings when the bores were sonic tested? Can you post pics. of the faces of the old rings, just the top two rings?