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Continental Z-145 Engine

General Technical Data

Continental Z-145 Engine Specifications

Engine Model .......... Continental Z145
Engine Type .......... Gasoline, four stroke, 4-cylinder liquid-cooled
Number of cylinders .......... 4
Engine Bore, mm (in) .......... 85.72 (3.38)
Engine Stroke, mm (in) .......... 103.2 (4.06)
Total Displacement, L (cu. in) .......... 2.4 (145)
Gross Power, kw (hp) .......... 31.1 (42.0)
Rated Power At PTO Shaft .......... 25.6 (34.3)
Cylinder Sleeves .......... Wet
Low Idle Speed, rpm .......... 725-775
High Idle Speed, rpm .......... 2200-2250
Full Load Speed, rpm .......... 2000
Compression ratio .......... 7.1:1
Firing order .......... 1-3-4-2
Oil Capacity, L (qts) .......... 4.7 (5.0)
Coolant Capacity, L (qts) .......... 9.5 (10.0)
Electrical System .......... 12 Volt, Negative Ground

Fuel System

Fuel System Type .......... Carburetor
Carburetor Model .......... Zenith 13795 / Zenith OE3435
Fuel Tank Capacity, L (gal) .......... 53.0 (14.0)
Fuel Delivery .......... Fixed Jet Carburetor

Ignition System

Ignition Timing .......... 8 deg BTDC
Ignition Point Gap, mm (in) .......... 0.45-0.55 (0.017-0.022)
ignition Coil .......... Delco-Remy
Spark Plug Gap, mm (in) .......... 0.63 (0.025)
Spark Plug .......... Champion RD-16 / AC-85S

Continental Z145 Maintenance Data

Fuel Type (min. octane) .......... 87 Octane Unleaded
Engine oil type .......... SAE 15W-40
Engine oil capacity, L (qts) .......... 1.4 (1.5)
Coolant Capacity, L (qts) .......... 9.5 (10.0)
Oil filter change interval .......... Every 150 hours
Oil change interval .......... Every 100 hours
Fuel filter change interval .......... Every 100 hours

Continental Z-145 Service Specifications

Cylinder Block

Crankshaft Main Journal Diameter, mm (in) .......... 57.13-57.15 (2.249-2.250)
Crankshaft Main Bearing Clearance, mm (in) .......... 0.013-0.081 (0.0005-0.0032)
Crankshaft Main Bearing Wear Limit, mm (in) .......... 0.107 (0.0042)
Crankshaft Crankpin Diameter, mm (in) .......... 49.49-49.21 (1.9365-1.9375)
Crankshaft Crankpin Bearing Clearance, mm (in) .......... 0.015-0.078 (0.0006-0.0031)
Crankshaft End Play, mm (in) .......... 0.10-0.20 (0.004-0.008)
Camshaft Journal Diameter (Front), mm (in) .......... 45.92-45.95 (1.808-1.809)
Camshaft Journal Diameter (Center), mm (in) .......... 44.34-44.36 (1.745-1.746)
Camshaft Journal Diameter (Rear), mm (in) .......... 42.75-42.77 (1.683-1.684)
Camshaft Bearing Clearance, mm (in) .......... 0.065-0.115 (0.0025-0.0045)
Camshaft End Play, mm (in) .......... 0.076-0.178 (0.003-0.007).
Piston Pins Diameter, mm (in) .......... 21.821-21.826 (0.8591-0.8593)
Piston Pins Clearance in Bushing, mm (in) .......... 0.005-0.015 (0.0002-0.0006)
Piston Ring End Gap, mm (in) .......... 0.25-0.50 (0.010-0.020)
Top Ring Groove Clearance, mm (in) .......... 0.09-0.13 (0.0035-0.0050)
Second/Third Ring Groove Clearance, mm (in) .......... 0.09-0.14 (0.0035-0.0055)
Cylinder Head Thickness (Standard), mm (in) .......... 86.52 (3.406)
Backlash Between Crankshaft and Camshaft Gears, mm (in) .......... 0.03-0.05 (0.001-0.002)
Backlash Between Crankshaft and Oil Pump Gears, mm (in) .......... 0.089-0.107 (0.0035-0.0042)
Connecting Rod Crank Pin Diameter, mm (in) .......... 49.187-49.213 (1.9365-1.9375)
Connecting Rod Bearing Clearance, mm (in) .......... 0.015-0.079 (0.0006-0.0031)
Connecting Rod Wear Limit, mm (in) .......... 0.105 (0.004)
Connecting Rod Side Clearance, mm (in) .......... 0.13-0.28 (0.005-0.011)

Cylinder Head

Intake Valve Clearance (Cold), mm (in) .......... 0.33 (0.013)
Exhaust Valve Clearance (Cold), mm (in) .......... 0.38 (0.015)
Intake Valve Clearance (Hot), mm (in) .......... 0.28 (0.011)
Exhaust Valve Clearance (Hot), mm (in) .......... 0.33 (0.013)
Intake Valve Face Angle, deg .......... 30
Exhaust Valve Face Angle, deg .......... 44
Intake Valve Seat Angle, deg .......... 30
Exhaust Valve Seat Angle, deg .......... 45
Intake/Exhaust Valve Seat Width, mm (in) .......... 1.60-2.40 (0.0625-0.09375)
Intake/Exhaust Valve Guides Inside Diameter, mm (in) .......... 8.019-8.057 (0.3157 -0.3172)
Intake Valve Stem Diameter, mm (in) .......... 7.978-7.998 (0.3141-0.3149)
Exhaust Valve Stem Diameter, mm (in) .......... 7.935-7.955 (0.3124-0.3132)
Intake Valve Stem Clearance, mm (in) .......... 0.021-0.079 (0.0008-0.0031)
Exhaust Valve Stem Clearance, mm (in) .......... 0.064-0.122 (0.0025-0.0048)
Valve Spring Free Length, mm (in) .......... 52.39 (2.0625)

Carburetor

Model .......... Zenith 13795 / Zenith OE3435
Venturi, mm .......... 21.0 / 15.0
Main Jet, mm .......... 1.35 / 0.95
Idle Jet, mm .......... 0.8 / 0.55
Main Discharge Jet, mm .......... 2.8 / 2.75
Well Vent, mm .......... 1.0 / 1.1
Fuel Valve Seat, mm .......... 1.75 / 1.75

Tightening Torque Specs

Cylinder Head, Nm (ft-lbs) .......... 95-101 (70-75)
Rocker Arm Shaft Support, Nm (ft-lbs) .......... 27-34 (20-25)
Crankshaft Main Cap, Nm (ft-lbs) .......... 115-129 (85-95)
Connecting Rods, Nm (ft-lbs) .......... 54-61 (40-45)
Main Bearings, Nm (ft-lbs) .......... 115-129 (85-95)
Flywheel, Nm (ft-lbs) .......... 95-101 (70-75)
Oil Pan, Nm (ft-lbs) .......... 16-22 (12-16)
Timing Gear Cover, Nm (ft-lbs) .......... 34-40 (25-30)
Intake Manifold, Nm (ft-lbs) .......... 27-41 (20-30)
Exhaust Manifold, Nm (ft-lbs) .......... 27-41 (20-30)
Spark Plugs, Nm (ft-lbs) .......... 43-52 (32-38)
Camshaft Gear Retaining Nut, Nm (ft-lbs) .......... 95-108 (70-80)