Tractor · 1947Unverified
Ford 8N
Ford 8N — N Series · 18 hp. Reference specifications; pending source verification.
Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.
Rated power
18 hp
Max power
15.5 kW
Weight
2410 to 2717 pounds
Hover a source tag to verify
Overview
ManufacturerFordReference
Utility tractorReference
Built in Highland Park, Michigan, USAReference
Total built524,000Reference
Original price was $1,404 in 1952Reference
Two-wheel driveReference
SteeringmechanicalReference
Manual drum brakesReference
Open operator station.Reference
Variants
8NANdistillate engineReference
Engine
Ford 2.0L 4-cyl gasolineReference
Ford 2.0L 4-cyl distillateReference
Drawbar (claimed)17.3 kWReference
Drawbar (tested)16.4 kWReference
Belt (tested)19.2 kWReference
FordReference
gasolineReference
4-cylinder 8-valveReference
liquid-cooledReference
Displacement2.0 LReference
Bore/Stroke81 x 95 mmReference
Compression6:1Reference
Compression6.7:1Reference
Rated RPM2000Reference
Torque124.8 NmReference
Torque RPM1500Reference
Firing order1-2-4-3Reference
Starter volts6Reference
Coolant capacity11.4 LReference
Sparkplug gap0.635 mmReference
Point gap0.381 mmReference
Point gap0.635 mmReference
Intake valve clearance0.279 mmReference
Exhaust valve clearance0.381 mmReference
Oil capacity5.7 LReference
distillateReference
4-cylinderReference
The distillate engine was used on the 8NAN variant.Reference
Compression4.75:1Reference
Image courtesy of Javier CardozoReference
Belt power (max)15.7 kWReference
Power at rated engine speed13.7 kWReference
Max power15.5 kWReference
Belt power (max)19.2 kWReference
Max power16.2 kWReference
Belt power (max)19.0 kWReference
Power at rated engine speed17.3 kWReference
Max power16.4 kWReference
Belt power (max)16.3 kWReference
Max power14.0 kWReference
Transmission
4-speedReference
12-speedReference
Transmissionconstant meshReference
Gears4 forward and 1 reverseReference
Oil capacity18.9 LReference
Oil type[0oC]Reference
32oF [0oC]↑: Ford M4864AReference
32oF [0oC]↓: Ford M4864BReference
Tractor must be stopped and clutch used to shift between gears.Reference
TransmissionSherman Combination TransmissionReference
Gears12 forward and 3 reverseReference
The Sherman Step-Up and Step-Down Combination transmission provided two additional ranges, one higher and one lower, through the use of an auxiliary gearbox. The Step-Down was geared down by 1.513 to 1. The Step-Up was geared up by 1 to 1.495.Reference
PTO & Hydraulics
PTO (claimed)20.4 kWReference
PTO (tested)17.3 kWReference
Hydraulic system18.9 LReference
Capacity18.9 LReference
Pressure117.2 barReference
Pump flow10.8 lpmReference
Rear TypeIReference
Rear lift362 kgReference
Rear PTOtransmissionReference
Rear PTO Type545 (1.125)Reference
Capacities
Fuel37.9 LReference
Dimensions
Wheelbase177 cmReference
Weight2410 to 2717 poundsReference
Front tire4.00-19Reference
Rear tire10-28Reference
Ag front4.00-19Reference
Ag front6.00-16Reference
Ag rear10-28Reference
Ag rear11.2-28Reference
Length292 cmReference
Width164 cmReference
Height138 cmReference
Ground clearance33 cmReference
Clearance (front axle)53 cmReference
Front tread121/132/142/152/162/172/182/193 cmReference
Rear tread121/132/142/152/162/172/182/193 cmReference
Shipping1093 kgReference
Operating1232 kgReference
Ballasted1833 kgReference
8N Serial Number Location
On the engine block, left-hand side, just behind oil filter. A star indicates steel sleeves, a diamond indicates cast-iron sleeves.Reference
8N Serial Numbers
19471Reference
194837908Reference
1949141370Reference
1950245637Reference
1951343198Reference
1952442035Reference
Final524076Reference
FAQ: How to read a serial number table.Reference
Links
8N Tractors: Parts, manuals, and information for the 8NReference
N Tractor Club:Reference
8N Manual: online at NewOldManuals.comReference
Electrical
GroundpositiveReference
Charging systemgeneratorReference
Charging amps20Reference
Battery volts6Reference
Battery AH80Reference
Questions
I have several tractors that I need to relocate 330 miles from my family's place to my place. I want to reasonably max out load weight each trip. Since "pounds count" do you have a more focused weight for this specific tractor? The dimensions page for the tractor provides details on weight ranges. In the case of the 8N, that range is between the shipping weight as published by Ford, and the operating weight as University of Nebraska measured it on their scale. If that particular tractor you are moving has fluid in the tires, then a ballasted weight would be more appropriate (4,000+).Reference
Test results
NTTL 385: gasoline 4-speed 2WDReference
NTTL 393: gasoline 4-speed 2WDReference
NTTL 443: gasoline 4-speed 2WDReference
NTTL 444: distillate (8NAN) 4-speed 2WDReference
Gasoline 4-speed 2WDSeptember 8 - 19, 1947Link: Nebraska Tractor Test 385 fileReference
Belt fuel use (max)10.2 l/hourReference
PTO performanceReference
Fuel use9.5 l/hourReference
Drawbar performanceReference
Max pull1274 kgReference
Gasoline 4-speed 2WDMay 11 - 18, 1948Link: Nebraska Tractor Test 393 fileReference
Belt fuel use (max)9.1 l/hourReference
Gear 2 used for power test.Reference
Max pull1247 kgReference
Gear 1 used for pull test.Reference
Gasoline 4-speed 2WDJune 16 - 27, 1950Link: Nebraska Tractor Test 443 fileReference
Belt fuel use (max)8.7 l/hourReference
Fuel use7.9 l/hourReference
Distillate (8NAN) 4-speed 2WDJune 22 - 29, 1950Link: Nebraska Tractor Test 444 fileReference
Max pull1068 kgReference
Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.