- NorthStar Portable Gas-Powered Air Compressor - Honda GX390 OHV Engine, 30-Gallon Horizontal Tank, 24.4 CFM @ 90 PSI Honda GX390 OHV engine with electric start/recoil backup and low oil shutdown 3 Amp battery charging circuit (battery not included) Full cast iron pump for long service life V-style cylinder design for superior cooling Pump head made of FC35 Grade cast iron (1) 30-gallon horizontal gas powered air compressor Honda GX390 OHV engine with electric start/recoil backup and low oil shutdown 3 Amp battery charging circuit (battery not included) Full cast iron pump for long service life V-style cylinder design for superior cooling Pump head made of FC35 Grade cast iron Floating-type Swedish steel valves deliver much longer valve life Operates at slower RPM to run cooler and last longer Low Vibration Technology (LVT) features a dynamically balanced pump for smooth operation and long life One-piece cast iron crankcase has bearings on both ends of crankshaft for superior crankshaft support, not overhung crankshaft design 100% duty cycle Delivers 24.4 CFM @ 90 PSI 175 max. PSI Pump runs at 1,300 RPM Oversized flywheel for cooler operation Heavy cast iron flywheel provides extra momentum Step-type piston rings ensure piston ring overlap for better compression Sight glass for quick viewing of oil level Replaceable crank journals and wrist pin journal/needle bearings Two-piece connecting rods can be rebuilt for superior serviceability High pressure piston wrist pins have needle bearings Easy start lever on unloader valve isolates pump from tank pressure, so engine won&#039;t have to start under load Durable steel belt guard Liquid-filled pressure gauge 3/4in. NPT outlet 30-gallon ASME-certified horizontal tank