| specifications for the 997cc cooper engine | |||||||||||
| engine number prefix 9F-sa-l | |||||||||||
| estimated production in australia 2800 | |||||||||||
| july 1962-january 1964 | |||||||||||
| Engine Type 997cc Cooper | DOME type welch plugs x 4 (S) cam follower covers | ||||||||||
| Bore | 2.4580" | ||||||||||
| Stroke | 3.20' | ||||||||||
| capacity of combustion chamber | |||||||||||
| b.m.e.p. australian low comp | 129 lb/sq" 3500 rpm | ||||||||||
| Bhp | 55 bhp @6000 rpm | ||||||||||
| Torque | 53 ft/lb @3500 | ||||||||||
| Fuel System | leaded | ||||||||||
| Compression Ratio | 8.3:1 in aust 9:1 is hi comp | ||||||||||
| Firing Order | 1 3 4 2 | ||||||||||
| Valve Clearance (Inlet) | .012" thou hot | ||||||||||
| Valve Clearance (Exhaust) | .012" thou hot | ||||||||||
| Cylinder Head Tension | 42 ft/lb * | ||||||||||
| Conrod Bolt Tension | 35 ft/lb | ||||||||||
| Main Bearing Tension | 60 ft/lb | ||||||||||
| Crankshaft Pulley Tension | 70 ft/lb | ||||||||||
| Flywheel Tension | 150 ft/lb | ||||||||||
| Points Gap | .015" | ||||||||||
| Dwell Angle in degrees | 60 + or - 5 | ||||||||||
| Spark Plug Type / Gap | bp5es ngk w8dc bosch .025" | ||||||||||
| Ignition Timing ( max total mech #30)distributor mechanic | 0-10 degrees BTDC (depends on fuel/comp ratio and distributor curve) | CO % (at idle) | 3% | ||||||||
| Oil Capacity | 5 litres incl filter | ||||||||||
| Oil Filter (Industry Number) | early R2180p mid R2200p screw on z418 | ||||||||||
| Oil Type / Grade | 20w/50 sg | ||||||||||
| Recommended Service Interval | 3000 miles/ 5000 km | ||||||||||
| Crankshaft main journal dia | 1.7505"-1.751" (44.46mm-44.47mm) | ||||||||||
| Main bearings running clearance | .001"-.0027" | ||||||||||
| Connecting rods little end size | .625" | ||||||||||
| Gudgeon pin circlip fully floating | hand push fit | ||||||||||
| Piston rings | width comps..062"" x 3 oil .125" end gaps on comp .008"-.015" | ||||||||||
| Valves | inlet head dia 1.156" exhaust 1.000" | ||||||||||
| Cam timing using .019" tappet clearance | inlet opens 16# btdc inlet closes 56#abdc | ||||||||||
| exhaust opens 51# bbdc exh closes 21#atdc | |||||||||||
| Valve springs free length | 1.750" 4-1/2 coils | ||||||||||
| Oil pressure normal running | 70 lb/in (4.92 kg/cm2 | ||||||||||
| carburettor needle twin 1-1/4" su | std gz weak eb rich ahz | ||||||||||
| Gearbox ratios standard ratio | |||||||||||
| helical gears top 1.0:1 | |||||||||||
| third 1.357:1 | |||||||||||
| second 1.916:1 | |||||||||||
| first 3.200:1 | |||||||||||
| reverse 3.200:1 | |||||||||||
| Overall gear ratios with 3.765 standard final drive ratio | |||||||||||
| top 3.765 | |||||||||||
| third 5.109 | |||||||||||
| second 7.213 | |||||||||||
| first/reverse 12.047:1 | |||||||||||
| Optional diff ratios | 3.938:1 4.133:1 4.267:1 3.44:1 | ||||||||||
