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Continental Y112 Engine

00000General Technical Data

Engine Specifications

Engine Model ............... Continental Y112
Engine Type ............... 4-cycle inline 4-cylinder L-head liquid-cooled gasoline
Number of Cylinders ............... 4
Cylinder Arrangement ............... In-line
Engine Bore, in (mm) ............... 3.18 (80.96)
Engine Stroke, in (mm) ............... 3.50 (88.90)
Displacement, cu.in (L) ............... 112 (1.8)
Rated Engine Power, hp (kW) ............... 28-36 (21-27)
Rated Engine Speed, rpm ............... 1800-2400
Peak Torque ............... 72 lb-ft (98 Nm) at 1200 rpm
Idle Speed ............... 500-600 rpm
Operating Speed ............... 1800 rpm
Compression Ratio ............... 6.5:1
Firing Order ............... 1-3-4-2
Cylinder Block Type ............... Cast iron
Cylinder Head Type ............... Cast iron flathead
Lubrication System ............... Full-pressure
Oil Pump Type ............... Gear-driven
Oil Filter Type ............... Bypass or full-flow spin-on option
Cooling System ............... Liquid-cooled
Water Pump Type ............... Belt-driven centrifugal
Air Cleaner Type ............... Oil bath or dry element option
Ignition System ............... Battery distributor or magneto option
Starting System ............... Electric Starter
Electrical System ............... 6V or 12V system

Fuel System

Fuel Type ............... Gasoline or Liquefied Petroleum Gas option
Carburetor Manufacturer ............... Marvel-Schebler or Zenith option
Carburetor Type ............... Updraft single barrel
Choke Control Type ............... Manual or automatic cable option
Fuel Delivery Method ............... Mechanical diaphragm pump or gravity feed option
Fuel Pump Pressure, psi (kPa) ............... 2.5-4.5 (17.2-31.0)
Governor Manufacturer ............... Pierce or Hoof option
Governor Type ............... Mechanical centrifugal flyweight
Governor Regulation ............... Internal speed sensing mechanical linkage
Intake Manifold Material ............... Cast iron integrated setup
Exhaust Manifold Material ............... Cast iron front or center exit option
Fuel Filter Type ............... Replaceable screen mesh or inline element

Dimensions and Weight

Engine Length, in (mm) ............... 22.5 (570)
Engine Width, in (mm) ............... 16.7 (425)
Engine Height, in (mm) ............... 24.2 (615)
Dry Weight, lbs (kg) ............... 290 (131.5)

Maintenance Data

Service Information

Oil Pressure Warm Operational, psi (kPa) ............... 30-45 (206.8-310.2)
Oil Pressure Minimum Idle, psi (kPa) ............... 7-10 (48.2-68.9)
Thermostat Opening Temperature, F (C) ............... 160 (71.1)
Thermostat Fully Open, F (C) ............... 180 (82.2)
Distributor Point Gap, in (mm) ............... 0.020 (0.508)
Spark Plug Gap, in (mm) ............... 0.025 (0.635)
Ignition Timing, deg BTDC ............... 4.0
Intake Valve Clearance (Cold), in (mm) ............... 0.012 (0.305)
Exhaust Valve Clearance (Cold), in (mm) ............... 0.012 (0.305)

Engine Oil and Coolant

Engine Oil Type .................. SAE 30, SAE 10W-30
API Service Classifications ......................... MS/CD
Crankcase Oil Capacity, qt (L) ............... 3.50 (3.31)
Crankcase Oil Capacity with Filter, qt (L) ............... 4.00 (3.78)
Cooling System Fluid Capacity, qt (L) ............... 6.50 (6.15)

Service Intervals

Change engine oil ............... Every 100 hours
Replace oil filter ............... Every 150 hours
Clean fuel filter ............... Every 250 hours
Change coolant ............... Every 500 hours
Valve-lash adjustment ............... Every 250 hours
Check fuel system ............... Every 500 hours
Replace spark plug ............... Every 500 hours
Compression test ............... Every 500 hours
Belt inspection ............... Every 100 hours

Service Specifications

Cylinder Bore Inside Diameter, in (mm) ............... 3.1875-3.1895 (80.963-81.013)
Cylinder Bore Maximum Out of Round, in (mm) ............... 0.0020 (0.051)
Cylinder Bore Maximum Taper, in (mm) ............... 0.0030 (0.076)
Main Bearing Journal Diameter, in (mm) ............... 1.8085-1.8095 (45.936-45.961)
Connecting Rod Journal Diameter, in (mm) ............... 1.7457-1.7465 (44.341-44.361)
Main Bearing Clearance, in (mm) ............... 0.0012-0.0029 (0.030-0.074)
Crankshaft End Play, in (mm) ............... 0.0030-0.0070 (0.076-0.178)
Connecting Rod Bearing Clearance, in (mm) ............... 0.0010-0.0027 (0.025-0.069)
Connecting Rod Side Clearance, in (mm) ............... 0.0040-0.0090 (0.102-0.229)
Piston to Cylinder Bore Clearance, in (mm) ............... 0.0020-0.0025 (0.051-0.064)
Piston Pin Diameter, in (mm) ............... 0.6873-0.6877 (17.457-17.468)
Piston Pin to Piston Pin Bore Clearance, in (mm) ............... 0.0001-0.0003 (0.003-0.008)
Piston Pin to Con Rod Bushing Clearance, in (mm) ............... 0.0003-0.0007 (0.008-0.018)
Top Ring Groove Width, in (mm) ............... 0.0938 (2.383)
Second Ring Groove Width, in (mm) ............... 0.0938 (2.383)
Oil Ring Groove Width, in (mm) ............... 0.1875 (4.763)
Top Ring End Gap, in (mm) ............... 0.0070-0.0170 (0.178-0.432)
Second Ring End Gap, in (mm) ............... 0.0070-0.0170 (0.178-0.432)
Oil Ring End Gap, in (mm) ............... 0.0070-0.0170 (0.178-0.432)
Top Ring Side Clearance, in (mm) ............... 0.0020-0.0040 (0.051-0.102)
Second Ring Side Clearance, in (mm) ............... 0.0015-0.0035 (0.038-0.089)
Oil Ring Side Clearancel, in (mm) ............... 0.0010-0.0030 (0.025-0.076)
Cylinder Head Flatness Maximum, in (mm) ............... 0.0030 (0.076)
Cylinder Block Deck Flatness Maximum, in (mm) ............... 0.0040 (0.102)
Intake Valve Head Diameter, in (mm) ............... 1.2030 (30.556)
Exhaust Valve Head Diameter, in (mm) ............... 1.1090 (28.169)
Intake Valve Stem Diameter, in (mm) ............... 0.3105-0.3115 (7.887-7.912)
Exhaust Valve Stem Diameter, in (mm) ............... 0.3105-0.3115 (7.887-7.912)
Intake Valve Stem to Guide Clearance, in (mm) ............... 0.0010-0.0030 (0.025-0.076)
Exhaust Valve Stem to Guide Clearance, in (mm) ............... 0.0020-0.0040 (0.051-0.102)
Valve Guide Inside Diameter, in (mm) ............... 0.3125-0.3135 (7.938-7.963)
Intake Valve Seat Angle, deg ............... 45.0
Exhaust Valve Seat Angle, deg ............... 45.0
Valve Spring Free Length, in (mm) ............... 2.1250 (53.975)
Camshaft Journal Diameter (Front), in (mm) ............... 1.4980-1.4990 (38.049-38.075)
Camshaft Journal Diameter (Center), in (mm) ............... 1.4355-1.4365 (36.462-36.487)
Camshaft Journal Diameter (Rear), in (mm) ............... 1.3730-1.3740 (34.874-34.900)
Camshaft End Play Clearance, in (mm) ............... 0.0020-0.0060 (0.051-0.152)

Tightening Torques

Cylinder Head Bolts (3/8 in), lb-ft (Nm) ............... 35-40 (47-54)
Cylinder Head Bolts (7/16 in), lb-ft (Nm) ............... 70-75 (95-102)
Connecting Rod Cap Nuts, lb-ft (Nm) ............... 35-40 (47-54)
Main Bearing Cap Bolts, lb-ft (Nm) ............... 60-65 (81-88)
Flywheel Bolts (3/8 in), lb-ft (Nm) ............... 35-40 (47-54)
Flywheel Bolts (7/16 in), lb-ft (Nm) ............... 70-75 (95-102)
Manifold Stud Nuts (5/16 in), lb-ft (Nm) ............... 15-20 (20-27)
Manifold Stud Nuts (3/8 in), lb-ft (Nm) ............... 25-30 (34-41)
Oil Pan Mounting Screws, lb-ft (Nm) ............... 12-15 (16-20)
Timing Gear Cover Bolts, lb-ft (Nm) ............... 15-18 (20-24)
Spark Plugs Body, lb-ft (Nm) ............... 25-30 (34-41)
Water Pump Mounting Fasteners, lb-ft (Nm) ............... 15-20 (20-27)
Oil Pump Cover Retaining Screws, lb-ft (Nm) ............... 8-10 (11-14)
Crankshaft Damper Pulley Center Nut, lb-ft (Nm) ............... 100-110 (136-149)
Flywheel Housing to Block Fasteners (3/8 in), lb-ft (Nm) ............... 30-35 (41-47)
Flywheel Housing to Block Fasteners (7/16 in), lb-ft (Nm) ............... 45-50 (61-68)
Distributor Hold Down Clamp Screw, lb-ft (Nm) ............... 6-8 (8-11)
Fuel Pump Mounting Bolt Screws, lb-ft (Nm) ............... 12-15 (16-20)
Valve Cover Hand Wheel Nuts, lb-ft (Nm) ............... 6-8 (8-11)
Governor Housing Mounting Fasteners, lb-ft (Nm) ............... 15-20 (20-27)
Oil Drain Plug, lb-ft (Nm) ............... 25-30 (34-41)

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