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Continental Y69 Engine

General Technical Data

Engine Specifications

Engine Model ............... Continental Y69
Engine Type ............... 4-cycle inline 4-cylinder L-head liquid-cooled gasoline
Number of Cylinders ............... 4
Cylinder Arrangement ............... In-line
Engine Bore, in (mm) ............... 2.500 (63.50)
Engine Stroke, in (mm) ............... 3.500 (88.90)
Displacement, cu.in (L) ............... 68.72 (1.126)
Rated Engine Power, hp (kW) ............... 13.5-18.5 (10.1-13.8)
Rated Engine Speed, rpm ............... 1500-2400
SAE Horsepower Rating, hp ............... 10.0
Peak Torque, lb-ft (Nm) ............... 42.5 (57.6) at 1200 rpm
Idle Speed, rpm ............... 450-550
Compression Ratio ............... 6.66:1-6.70:1
Firing Order ............... 1-3-4-2
Crankshaft Main Bearings ............... 3 interchangeable precision inserts
Camshaft Drive Type ............... Helical gear-to-gear engagement
Cylinder Block Type ............... Cast iron monoblock
Cylinder Head Type ............... Cast iron flathead L-head style
Lubrication System ............... Full pressure-feed type
Oil Pump Type ............... Gear-driven internal assembly
Oil Filter Type ............... Bypass external spin-on or element type
Cooling System ............... Thermo-syphon or centrifugal water pump circulation
Water Pump Type ............... Belt-driven centrifugal type on specific builds
Air Cleaner Type ............... Oil bath or dry cartridge style
Starting System ............... Electric starter or manual hand crank
Electrical System ............... 6V or 12V negative/positive ground systems

Fuel System

Carburetor Manufacturer ............... Carter or Marvel-Schebler
Carburetor Model Variant ............... Carter 852S or Marvel-Schebler TSX series
Carburetor Size, in (mm) ............... 1.00 (25.40)
Choke Type ............... Manual cable-controlled butterfly valve
Fuel Feed Method ............... Gravity feed or mechanical diaphragm pump pressure
Fuel Pump Operating Pressure, psi (kPa) ............... 1.5-3.5 (10.3-24.1)
Fuel Type ............... Regular low-lead gasoline or industrial liquefied petroleum gas
Intake Manifold Configuration ............... Single runner integrated cast iron unit
Exhaust Manifold Configuration ............... Combined layout with internal heat riser zone
Main Jet Orifice Diameter, in (mm) ............... 0.046 (1.17)
Idle Jet Orifice Diameter, in (mm) ............... 0.028 (0.71)
Float Setting Clearance, in (mm) ............... 0.250 (6.35) from gasket face to float apex
Float Needle Seat Orifice, in (mm) ............... 0.065 (1.65)
Idle Mixture Screw Baseline, turns ............... 1.25-1.50 open from fully seated position
Main Air Bleed Orifice, in (mm) ............... 0.052 (1.32)
Throttle Bore Diameter, in (mm) ............... 1.062 (26.97)
Venturi Diameter, in (mm) ............... 0.781 (19.84)
Fuel Filter Construction ............... Sediment bowl style with fine mesh screen brass element
Fuel Tank Capacity, gal (L) ............... 5.0-8.0 (18.9-30.3)
Governor Type ............... Mechanical flyweight centrifugal style
Governor Manufacturer ............... Novi or Continental proprietary build
Governor Linkage Style ............... Direct rod connection with anti-backlash tension spring
Air Intake Horn Diameter, in (mm) ............... 1.500 (38.10)
Liquefied Petroleum Gas Regulator Model ............... Ensign or Century primary converter converter
Liquefied Petroleum Gas Lockoff Valve ............... 12V electrical solenoid or vacuum operated device

Dimensions and Weight

Overall Length, in (mm) ............... 25.9 (660)
Overall Width, in (mm) ............... 14.2 (360)
Overall Height, in (mm) ............... 25.2 (640)
Dry Weight, lbs (kg) ............... 265 (120)

Maintenance Data

Service Information

Minimum Compression Pressure, psi (kPa) ............... 90.0 (620.5)
Normal Compression Pressure, psi (kPa) ............... 100.0-115.0 (689.5-792.9)
Maximum Compression Between Cylinders, psi (kPa) ............... 10.0 (68.9)
Oil Pressure at High Speed, psi (kPa) ............... 20.0-30.0 (137.9-206.8)
Oil Pressure at Low Idle, psi (kPa) ............... 7.0 (48.3)
Spark Plug Thread Reach, in (mm) ............... 0.500 (12.70)
Spark Plug Gap , in (mm) ............... 0.025 (0.64)
Breaker Point Gap, in (mm) ............... 0.020 (0.51)
Magneto Point Gap, in (mm) ............... 0.015 (0.38)
Ignition Timing, degrees ............... 20.0-24.0 BTDC
Fan Belt Tension Deflection, in (mm) ............... 0.500 (12.70)
Intake Valve Clearance, Cold, in (mm) ............... 0.012 (0.30)
Exhaust Valve Clearance, Cold, in (mm) ............... 0.014 (0.36)

Engine Oil and Coolant

Engine Oil Type .................. SAE 30, SAE 10W-30
API Service Classifications ......................... MS/CD
Crankcase Oil Capacity with Filter, qt (L) ............... 4.00 (3.78)
Crankcase Oil Capacity (Dry Engine), qt (L) ............... 4.50 (4.26)
Cooling System Fluid Capacity, qt (L) ............... 6.00 (5.68)

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) ............... 2.5000-2.5010 (63.500-63.525)
Cylinder Bore Maximum Taper, in (mm) ............... 0.0015 (0.038)
Cylinder Bore Maximum Out-of-Round, in (mm) ............... 0.0010 (0.025)
Connecting Rod Journal Bearing I.D, in (mm) ............... 1.5012 (38.130)
Connecting Rod Big End Bore I.D, in (mm) ............... 1.6250 (41.275)
Crankshaft Main Journal Diameter, in (mm) ............... 1.7480 (44.399)
Crankpin Journal Diameter, in (mm) ............... 1.4995 (38.087)
Connecting Rod Journal Clearance, in (mm) ............... 0.0010-0.0025 (0.025-0.064)
Connecting Rod Side Clearance, in (mm) ............... 0.0050-0.0090 (0.127-0.229)
Crankshaft Main Journal Clearance (Front), in (mm) ............... 0.0012-0.0028 (0.030-0.071)
Crankshaft Main Journal Clearance (Center), in (mm) ............... 0.0012-0.0028 (0.030-0.071)
Crankshaft Main Journal Clearance (Rear), in (mm) ............... 0.0015-0.0031 (0.038-0.079)
Crankshaft End Play, in (mm) ............... 0.0030-0.0070 (0.076-0.178)
Piston to Cylinder Bore Clearance, in (mm) ............... 0.0020-0.0030 (0.051-0.076)
Piston Pin Outer Diameter, in (mm) ............... 0.7031 (17.859)
Piston Pin Bore Inner Diameter, in (mm) ............... 0.7035 (17.869)
Piston Pin to Piston Pin Bore Clearance, in (mm) ............... 0.0001-0.0004 (0.003-0.010)
Piston Pin to Con Rod Bushing Clearance, in (mm) ............... 0.0003-0.0006 (0.008-0.015)
Top Ring Groove Width, in (mm) ............... 0.0947-0.0957 (2.405-2.431)
Second Ring Groove Width, in (mm) ............... 0.0947-0.0957 (2.405-2.431)
Oil Ring Groove Width, in (mm) ............... 0.2510-0.2520 (6.375-6.401)
Top Ring Groove Side Clearance, in (mm) ............... 0.0015-0.0030 (0.038-0.076)
Second Ring Groove Side Clearance, in (mm) ............... 0.0015-0.0030 (0.038-0.076)
Oil Ring Groove Side Clearance, in (mm) ............... 0.0010-0.0025 (0.025-0.064)
Top Ring End Gap, in (mm) ............... 0.0070-0.0150 (0.178-0.381)
Second Ring End Gap, in (mm) ............... 0.0070-0.0150 (0.178-0.381)
Oil Ring End Gap, in (mm) ............... 0.0070-0.0150 (0.178-0.381)
Intake Valve Port Head Diameter, in (mm) ............... 1.0625 (26.988)
Exhaust Valve Port Head Diameter, in (mm) ............... 0.8750 (22.225)
Intake Valve Stem Outer Diameter, in (mm) ............... 0.3110 (7.899)
Exhaust Valve Stem Outer Diameter, in (mm) ............... 0.3105 (7.887)
Intake Valve Guide Bore Inside Diameter, in (mm) ............... 0.3125-0.3135 (7.938-7.963)
Exhaust Valve Guide Bore Inside Diameter, in (mm) ............... 0.3125-0.3135 (7.938-7.963)
Intake Valve Stem-to-Guide Clearance, in (mm) ............... 0.0015-0.0030 (0.038-0.076)
Exhaust Valve Stem-to-Guide Clearance, in (mm) ............... 0.0020-0.0035 (0.051-0.089)
Valve Seat Angle, degrees ............... 45
Valve Face Angle, degrees ............... 45
Valve Spring Free Length, in (mm) ............... 2.1250 (53.975)
Camshaft Journal Diameter Front, in (mm) ............... 1.6230 (41.224)
Camshaft Journal Diameter Center, in (mm) ............... 1.5605 (39.637)
Camshaft Journal Diameter Rear, in (mm) ............... 1.2485 (31.712)
Cam Lobe Lift (Intake), in (mm) ............... 0.2187 (5.555)
Cam Lobe Lift (Exhaust), in (mm) ............... 0.2187 (5.555)
Camshaft Bearing Clearance, in (mm) ............... 0.0015-0.0030 (0.038-0.076)
Camshaft End Play, in (mm) ............... 0.0020-0.0060 (0.051-0.152)
Valve Tappet Guide Bore in Block Cylinder, in (mm) ............... 0.5620-0.5630 (14.275-14.300)
Valve Tappet Stem Outer Diameter, in (mm) ............... 0.5605-0.5612 (14.237-14.254)
Valve Tappet-to-Bore Working Clearance, in (mm) ............... 0.0008-0.0025 (0.020-0.064)

Tightening Torques

Cylinder Head Bolt, lb-ft (Nm) ............... 35-40 (47.5-54.2)
Connecting Rod Cap Bolts, lb-ft (Nm) ............... 18-22 (24.4-29.8)
Main Bearing Capscrews, lb-ft (Nm) ............... 45-50 (61.0-67.8)
Flywheel Mounting Bolts, lb-ft (Nm) ............... 35-40 (47.5-54.2)
Flywheel Housing Bolts, lb-ft (Nm) ............... 25-30 (33.9-40.7)
Oil Pan Base Sump Bolts, lb-ft (Nm) ............... 10-12 (13.6-16.3)
Oil Pan Drain Plug, lb-ft (Nm) ............... 20-25 (27.1-33.9)
Camshaft Gear Lock Nut, lb-ft (Nm) ............... 50-55 (67.8-74.6)
Crankshaft Front Pulley Hub Bolt, lb-ft (Nm) ............... 60-65 (81.3-88.1)
Intake Manifold Stud Nuts, lb-ft (Nm) ............... 15-18 (20.3-24.4)
Exhaust Manifold Stud Nuts, lb-ft (Nm) ............... 15-18 (20.3-24.4)
Valve Cover Inspection Capscrews, lb-ft (Nm) ............... 6-8 (8.1-10.8)
Spark Plug Base, lb-ft (Nm) ............... 25-30 (33.9-40.7)
Distributor Base Lock Clamp Screw, lb-ft (Nm) ............... 12-15 (16.3-20.3)
Generator Alternator Support Bolt, lb-ft (Nm) ............... 22-26 (29.8-35.3)
Generator Alternator Adjustment Tension Bolt, lb-ft (Nm) ............... 12-15 (16.3-20.3)
Starter Motor Mounting Capscrews, lb-ft (Nm) ............... 30-35 (40.7-47.5)
Water Pump Back Plate Fasteners, lb-ft (Nm) ............... 10-12 (13.6-16.3)
Water Pump to Cylinder Block Bolts, lb-ft (Nm) ............... 15-18 (20.3-24.4)
Oil Pump Housing Cover Screws, lb-ft (Nm) ............... 8-10 (10.8-13.6)
Timing Gear Front Cover Screws, lb-ft (Nm) ............... 10-12 (13.6-16.3)
Governor Housing Mounting Bolts, lb-ft (Nm) ............... 15-18 (20.3-24.4)
Fuel Pump Mechanical Diaphragm Body, lb-ft (Nm) ............... 12-15 (16.3-20.3)
Carburetor Base Flange Nuts, lb-ft (Nm) ............... 12-15 (16.3-20.3)
Oil Filter Adapter Bolts, lb-ft (Nm) ............... 20-25 (27.1-33.9)
Thermostat Housing Cover Capscrews, lb-ft (Nm) ............... 15-18 (20.3-24.4)
Front Engine Support Bolts, lb-ft (Nm) ............... 35-40 (47.5-54.2)
Rear Engine Mount Bolts, lb-ft (Nm) ............... 40-45 (54.2-61.0)
Crankshaft Rear Oil Seal Screws, lb-ft (Nm) ............... 8-10 (10.8-13.6)
Flywheel Inspection Cover Screws, lb-ft (Nm) ............... 6-8 (8.1-10.8)

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