ESE's works engine tuner

[Condyn]

Thank you for the explanation. It matches what I am seeing. My customer sent me his datalog Which seemed strange to me because there was random downward spikes in the rpm logs which mostly occurred late in the races, or at the end of a long straightaway. His wash was non existent but the transfer windows/ducts looked somewhat wet. The plugs look like they have flecks of aluminum on them, but it must be microscopic damage because the pistons look undamaged, unless the flecks are coming from the ring grove ( which I have not asked for a photo of ) where it is getting pounded by the ring.

[wobbly]

A normal ring has a bright shiny bottom surface from being pressed down and moved back and forth into the Exhaust port.
That ring has serious deto, the bottom ring groove face will be torn up.
The EGT dropping at the end of the straights is a sure and obvious sign deto is occurring.
Kart datalog gauges have warning lights to show just under the max achievable EGT value and prevent damage.