Wasp Jr. SB : compression_ratio : 6.0:1 | Wasp Jr. SB : octane_rating : 80/87 | Wasp Jr. SB : power,_continuous : hp (kW) at 2,200 RPM
The compression ratio for the engine, with continuous power hp (kw) at 2,200 RPM and an octane rating is 80/87, is 6.0:1.