Engine

A Lycoming IO-360, the fuel-injected engine in the 172R and Pilot 100i, modeled in CAD to its real bore, stroke, and layout. The 172K's O-320 is built the same way, with a carburetor in place of the fuel injection.

Pull it apart

Spread the parts Together

See through the case and cylinders Cylinder numbers Propeller and spinner

Run it

Crankshaft angle 0°

Firing order 1-3-2-4. Cylinders 1 and 3 are on the right, 2 and 4 on the left, with 1 and 2 nearest the propeller. One full cycle is two turns of the crankshaft.

Selected part

Click a part on the engine or in the list below.

Parts

Built from the IO-360's published bore, stroke, and overall size and Lycoming's layout. Smaller parts are simplified, so use the POH and your mechanic for the real thing.