This is from the Smith's 8N Ford Tractor page
Hope it helps
8N Specifications and Data General Wheelbase . . . . . . . . . . . . . . . . . . . . . . . . . . 70 inches
Over-all length . . . . . . . . . . . . . . . . . . . . . . 115 inches
Over-all height . . . . . . . . . . . . . . . . . . . 54 1/2 inches
Over-all width, normal tread . . . . . . . . 64 3/4 inches
Tire size:
Front standard . . . . . . . . . . . . . . . . . . . . . 4.00 - 19
optional . . . . . . . . . . . . . . . . . . . . . . 6.00 - 16
Rear standard. . . . . . . . . . . . . . . . . . . . . . . 11.2 - 28
Tread width . . . . . . . . .48 to 76 inches in 4-inch steps
Turning circle radius (with use of brakes):
Made by outer front wheel . . . . . . . . . . . . . . . . 8 ft.
Made by tractor centerline at rear axle . . 3 1/2 ft.
Shipping weight (including gasoline, oil, water, tires with air, operator not included) . . . . . . . . 2,410 lbs.
Drawbar height . . . . . . . . . . . . . . . 8 1/2 to 34 1/4 in. Capacities - U.S. Measure Fuel tank . . . . . . . . . . . . . . . . . . . . . . . . . 10 gals. total
Engine oil pan. . . . . . . . . . . . . . . . . . . 6 qts. with filter
Transmission, hydraulics 80w90 . . . . . . . . . . . . 5 gals.
Cooling system . . . . . . . . . . . . . . . . . . . . . . . . . . 12 qts.
Oil bath air cleaner. . . . . . . . . . . . . . . . . . . . . . . 1 pint
Tire pressure:
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 lbs.
Front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 lbs. Engine Type . . . . . . . . . . . . . . . . . . . . . . . 4-cylinder "L" head
Maximum Drawbar HP. 2nd Gear. . . . . . . . . . . . . 23.16
Maximun belt horsepower at 2000 R.P.M. . . . . . 27.32
Rated speeds . . . . . . . . . . 1500, 1750, and 2000 RPM.
Idle speed . . . . . . . . . . . . . . . . . . . . . . 400-450 R.P.M.
Cylinder bore. . . . . . . . . . . . . . . . . . . . . . . . . . 3.188 in.
Stroke . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.75 in.
Piston displacement . . . . . . . . . . . . . . . . . . . 119.7 cu. in.
Torque . . . . . . . . . . . . . . . . . . . . 92 lbs ft. at 1500 rpm
Compression ratio. . . . . . . . . . . . . . . . . . . . . . . . . 6.50:1
Sleeves. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Dry type
Piston. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Aluminum
Rings. . . . . . . . . . . . . . . . . . . . Compression (2) Oil (1) Piston pin . . . . . . . . . . . . . . . . . . . . . . . . . . Full floating
Rod bearings . . . . . . . . . . . . . . . Replaceable shell-type
Main bearings . . . . . . . . . . . . . . Replaceable shell-type
Crankshaft . . . Cast steel, static and dynamic balanced
Compression psi at cranking speed . . . . 90 psi minimum
Valve tappet clearance:
Intake . . . . . . . . . . . . . . . . . . . . . . . . .010 - .012 cold
Exhaust . . . . . . . . . . . . . . . . . . . . . . . .014 - .016 cold
Crankshaft journal:
Main bearing diameter . . . . . . . . . . 2.248 - 2.249 in.
Rod bearing diameter. . . . . . . . . . . . . . . . . . 2.094 in. Tread width is 48" to 76". I have two more pages if you whant more info.
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