For the hive-mind...
Attached pic are the Denso IK27s that I've been running in my IO-360-A1B6 with Dual Lightspeed Plasma III's for about 150 hours.
I typically operate 50 - 75F LOP, CHTs ~290 - 320F range. There has been no indication of ignition issues, no backfire, no stumbles, no runaway EGTs, no compression issues, etc. etc.
Any ideas what the source/cause of the discoloration around the bottom of the ceramic insulator might be?
Attached pic are the Denso IK27s that I've been running in my IO-360-A1B6 with Dual Lightspeed Plasma III's for about 150 hours.
I typically operate 50 - 75F LOP, CHTs ~290 - 320F range. There has been no indication of ignition issues, no backfire, no stumbles, no runaway EGTs, no compression issues, etc. etc.
Any ideas what the source/cause of the discoloration around the bottom of the ceramic insulator might be?