This part is from M.O.T.H.S.
cost:
450
mass:
1.875
category:
Engine
TechRequired:
start
engine_data:
standard
{"isp"=>{"vac"=>310.0, "atmo"=>250.0}, "propellant_ratios"=>{"LiquidFuel"=>0.9, "Oxidizer"=>1.1}, "max_thrust"=>175.0}