Has great compression and smooth ball bearings. Carb linkage & both high speed and idle adjustments are also tight and move freely. These engines can easily be converted to run on gas ignition.The item "Fox Twin 1.20 Opposed Boxer R/C Radio Control Model Airplane Glow Gas Engine" is in sale since Saturday, July 24, 2021. This item is in the category "Toys & Hobbies\Radio Control & Control Line\RC Model Vehicle Parts & Accs\Engine, Exhaust & Fuel Systems\Gas/Nitro Engines". The seller is "concreteguy62" and is located in White Bluff, Tennessee. This item can be shipped to United States, Canada, Bahamas, Uruguay.