Originally posted by goatsNdonkey The 2N needs a gas tank replacement and some other things. When I got it as a replacement for a 9N I had that needed more work than I could do (trading in the 9N toward the 2N), I didn't realize that the gas tank was so rusty inside that it would fill the fuel filter & more with rust after about every 20-40 minutes of operation sapping the machine's power progressively as that happened, a problem the 9N never had. I didn't exactly get a guarantee, so I was stuck with a tractor that couldn't do much. I'm gonna get it running again this year. On the best day of its operation, since I bought it, the 2N couldn't dream of pulling that trailer load of wood in your picture up a hill, but my old 9N had that kind of power for most of the years I had it. Of course an 8N is a more advanced machine, despite the similarities to its ancestors.
The rust in the gas tank is a common problem for all older machines, cars, pickups, and tractors. Drain and remove the tank, remove the drain cock and filter assembly. Then drop a 12 to 18 inch length of 1/4" chain into it, replace the filler cap and shake the dickens out of it.
Remove the cap, dump the crap out of it, and repeat until it doesn't produce rust flakes anymore. Then get one of those kits for sealing the inside, and after it is done put it all back together and you should be golden for another 70 years.
The engines in all 3 Ford N series tractors were the same, a 4 cylinder flathead, the same engine that was in the Model A cars, pickups and trucks, and stationary engines used for power generators, water pumps and the belt and pulley power distribution systems that were common back in the day for factories, mills and machine shops. There were very few differences, and the displacement and power output was pretty much the same for all of them. The later ones in the 8N (1950) had the distributor on the side rather than the front of the engine.
9N and 2N engines were rated at 84ftlbs of torque, the 8N was rated at 92ftlbs.
The 9N and 2N had a 3 speed transmission, the 8N had a 4 speed.
Check out this 8N lawnmower:
John Smith's 8N Riding Mower
There is a great resource here:
N Tractor Club