This part is from SpaceY
cost:
175000
mass:
45
category:
Engine
TechRequired:
veryHeavyRocketry
engine_data:
AllEngines
{"isp"=>{"vac"=>290.0, "atmo"=>265.0}, "propellant_ratios"=>{"LiquidFuel"=>0.9, "Oxidizer"=>1.1}, "max_thrust"=>19800.0}