I’ve had requests to show comparisons between the bad old internal parts of the Continental IO-470-LCK and the new ones being used in its replacement, a 260-hp Continental IO-470-N. Genesis Engines by D’Shannon is assembling the new engine as we speak, er, write, so it’s a good time to have a look. Genesis’ John Clegg put together some photos, which show the parts fairly clearly.
Clegg says that D’Shannon goes a step beyond standard practice when it comes to their engine buildups. This includes treating many internal parts with what’s known as a REM finish. “”Basically, it’s a deburring and hardening process that makes oil adhere better to gears and other moving parts,” he said. How can you tell if the parts have been REM-finished? They appear uniformly brighter.
Similarly, a process known as jet-coating is used on air-intakes. This is a heat treatment that helps prevent corrosion.
That’s it for this Friday’s report. By this time next week the engine should be assembled and its first test run completed. In two weeks, the engine will be installed in the airplane and ready for first flight.