PRODUCT MERCHANDISING MANUAL - SUPER HURRICANE ENGINE

THE SUPER-HURRICANE ENGINE

The cylinder block of the new Super-Hurricane is heavier and stronger in the upper crankcase portion. It has greater webbing strength and heavier main crankshaft bearing caps. This gives the engine resistance to sudden strains and periodic shocks.

Cylinder barrels are completely separated from each other by full length water jackets which surround the entire cylinder. Uniform cooling of the cylinder barrels for the full length prevents warping or twisting which might result from uneven temperatures because of varying thickness of the metal. This is the most expensive method of casting a cylinder block. However, its advantages in stability, long life, operating economy and smooth performance more than justify its use.

VALVES

Valves are designed and timed to increase volumetric efficiency and power.  The intake valves are silchrome alloy and seat at 30° angle. New silchrome SRC steel exhaust valve s seat at 45' angle to facilitate the scavenging of exhaust gases. Positive rotors are used on the tappet end of the exhaust valves causing them to turn, thus aiding in the elimination of sticky valves and insuring smooth, perfectly synchronized valve action.

The Super-Hurricane engine has new mushroom shaped tappets providing extremely large cam bearing surfaces. This reduces noise and gives better vertical alignment over many years of operation. The tappets are individually lubricated under pressure through specially drilled oil passages which lead directly from the main oil manifold system.

PISTONS

Newly-designed, tin-plated, aluminum alloy, T-slot pistons are used in the Super-Hurricane engine.  A cast-in-steel thermal expansion control ring forces the piston to attain perfect roundness through heat alone rather than by the pressure of the expanding metal on the cylinder walls. This reduces scuffing, scoring and piston slap to a minimum.

The Super-Hurricane has two compression rings and two oil control rings which are slotted so excess oil can drain back to the crankcase. This ring combination reduces piston and cylinder scuffing and gives better oil control with prolonged engine life and top performance.

CONNECTING RODS

Connecting rods are forged from special steel, hardened and carefully balanced over their entire 7-inch length for perfect weight distribution. The cylinder walls and the piston pin bushings are lubricated by an oil jet hole in the lower end of the connecting rod. Oil is squirted under pressure at each revolution when this hole lines up with the drilled oil passages which lead directly from the main oil manifold system.

DUAL DOWNDRAFT CARBURETOR

The new dual throat carburetor plus the dual intake manifold system, with an automatic pre-heater for cold weather warm up, assures each cylinder of the largest possible charge of perfectly mixed fuel. Each throat of the dual carburetor supplies vapor to a separate manifold, and each manifold, in turn, passes the vapor to only three cylinders. The manifolds are of large diameter, and f r e e from bends or obstructions of any kind. This cuts down the travel distance for the fuel mixture. Each cylinder receives an exactly equal charge which makes for smoother performance.

The three -valve oversize fuel pump and large carburetor bowl capacity protects the Super-Hurricane Engine against vapor lock.

CRANKSHAFT

The crankshaft is forged steel and weighs 77 pounds. The new counterweight design permits 100% static and dynamic balancing.  A new crankshaft oil seal design has been developed to eliminate oil leaks from the crankcase to clutch housing.

COOLING SYSTEM

Valve chambers and cylinder heads have ample cooling, and large radiator capacity (12-quart cooling system) gives a high margin of safety.

A thermostat, installed in the cylinder head outlet pipe, controls the flow of the coolant to the radiator at all times. The curved-tip 18" fan blade assures a cooler, quieter engine.

The cooling system is engineered so that the operating temperature range is reached quickly and maintained evenly whatever the conditions of roads, weather or altitude.

LUBRICATION SYSTEM

Oil is drawn from the oil pan through a floating oil screen by a large submerged pump, gear driven from the camshaft at a constant pressure of 35 pounds per square inch to the main oil gallery. From there it passes through the oil filter and under pressure lubricates all main connecting rod, and cam shaft bearings, as well as all tappets, timing chain and sprockets.

Cylinder walls, pistons and piston pins are splash lubricated by being sprayed with oil even at low speeds from spurt holes on the thrust side of the connecting rod bearings.

This concludes the main features of the Hurricane and Super-Hurricane engines. However, it would be well to go into more detailed technical specifications. This, plus detailed information on the fuel, electrical, cooling and lubricating systems, is included along with the complete engine specifications in the following pages of this section.

TWO GREAT ENGINES -- THE 4-CYLINDER HURRICANE AND THE 6-CYLINDER SUPER-HURRICANE -- GIVE YOUR CUSTOMER A CHOICE TO FIT HIS INDIVIDUAL NEEDS.

01  Fan

17  Camshaft

02  Water pump assembly

18  Rear engine plate

03  Piston Pin

19  Oil pan drain plug

04  Water outlet fitting

20  Oil float support

05  Cylinder head

21  Oil float

06  Piston

22  Oil pan assembly

07  Oil level indicator assembly

23  Connecting rod

08  Carburetor assembly

24  Cranks haft kit

09  Spark Plug assembly with gasket

25  Crankshaft gear

10  Exhaust Valve

26  Crankshaft oil seal

11  Exhaust Guide

27  Engine front plate assembly

12  Exhaust Spring

28  Pulley

13  Adjusting valve screw

29  Timing gear assembly cover

14  Block and Bearing

30  Timing shaft gear

15  Flywheel and dowel bolt kit

31  Drive fan belt

16  Valve tappet