Shire 35 Short-Hull Keel-Cooled Narrowboat Diesel Engine

Description

Producing 31 BHP continuous output from 1.6L displacement, the Shire 35 Short-Hull Diesel Engine matches steel cruisers up to 45 ft. Its 3-Cylinder direct-injected architecture provides solid push against canal currents. Keel-cooled plumbing protects internal jackets from raw river debris, although compact engine rooms require precise ducting to exhaust radiant compartment heat.

Pearlitic cast iron forms the monolithic block structure with three integral parent cylinder bores and an OHV cast iron head. The 12V electrical system features a 1.4 kW starter motor plus dual alternators, delivering 50A starter charge and 150A house battery capacity. Dry weight without transmission is 386 lbs. The mounting chassis envelope measures 28.0in long by 20.3in wide and 24.4in high, supported by a 1.53 US gal oil capacity.

Key Features of Shire 35 Short-Hull

Inland leisure operators buy Shire 35 Short-Hull diesel engine bobtail units to power 30 to 45 ft narrowboats through shallow canals. The rear flywheel housing pairs directly with PRM 125 or PRM 150 mechanical transmissions.

• Mechanical in-line injection pump manages fuel metering without electronic control modules
• Dual alternators produce 50A and 150A outputs to power onboard domestic battery banks
• Closed skin-tank keel-cooling loops 1.72 US gal of coolant without raw water mud ingestion
• Rigid cast iron parent bore cylinders prevent thermal distortion under prolonged lock cruising
• Direct mechanical governor retains engine speed across varying hydraulic canal depths
• SAE 4 bellhousing pattern mounts standard PRM reduction gearboxes without custom adapter plates
• High-capacity water pump circulates coolant through hull skin tanks under continuous load

Continuous Dynamometer Output Operating Tolerances

Dynamometer certification proves 31 BHP continuous power at 2,600 RPM and 35 BHP intermittent power at 2,800 RPM. Keel-cooling systems maintain coolant temperatures at 180°F under continuous 80% throttle application. Oil pressure registers 46 PSI at working temperatures across static installation angles up to 15°. Mechanical direct injection pop pressures operate at 200 bar, while crankshaft journal runout measures within 0.0006in TIR to guarantee long crankshaft bearing life during heavy canal lock operation and low-idle mooring charging cycles.

Operational Limits Routine Servicing

Mechanical control linkages engage with under 4 lbs of force at the helm station. Do not install this 1.6L 3-Cylinder engine in heavy widebeam barges exceeding 50 ft or commercial tugs needing high bollard pull in fast-flowing river currents.

• Drain 1.53 US gal of crankcase oil every 250 operating hours using the fitted sump pump
• Replace the canister fuel filter element every 500 operating hours to safeguard injector nozzles
• Calibrate valve lash clearances every 1,000 run hours to maintain correct cylinder breathing cycles

Warranty Coverage Included Inventory

E.P. Barrus provides a 3-Year leisure warranty or 2-Year commercial warranty on this engine. The shipping pallet contains the complete bobtail diesel unit, dual alternators, 12V starter, flexible anti-vibration engine mounts, electrical wiring harness, oil drain pump, instrument gauges, and instruction manual.