Posted By: Lon207
Race engine-marks on cylinder walls - 02/20/22 02:51 AM
I'm attaching pictures of something I have not seen before. 360 race engine with .040 KB silvolite pistons in it. I built this engine maybe 10 years ago for a dirt track Dakota. Has maybe 10 nights on it-30 laps max per night. After a teardown, clean up, and re-hone, the cylinders show a dark spot that feels pretty deep. Its on all 8 cylinders.
Any idea what causes this? It ran 3-4 races in the last couple months with no known issues. thanks in advance.
Any idea what causes this? It ran 3-4 races in the last couple months with no known issues. thanks in advance.