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F-20 size comparison

J

John826diesel

Member
I know that the H was "supposed" to replace the F-20,and the M was "supposed" to replace the F-30. i believe the F-20 is a little beefier than the H,and have heard the same by many old timers... They are all great tractors,dont get me wrong,and i know an H is a lot more operater friendly,but as far as power and pull wise,i think it was kind of a weak up-grade. Seems like the F-20 should be more between the H and M...but that is only my opinion....what do you guys think??
 
Well, the H has a couple more ponies under the hood, but the F-20 will lug better IMHO. I have never compared the tourque numbers for these engines, but the H definately has 24 HP at the drawbar and wieghts 3875 lbs. F-20 is 20.7 HP at the drawbar and weights 4400 lbs.

Now, the interesting part is that the tested Belt HP for the H is 26 and for the F-20 is 26.

At 4400 lbs, and lots of tourque, the F-20 should theoretically out "lug" pull the H, except the H transmits more HP to the drawbar. In a flat out test, with both tractors, stock, and new built engines, I would put my money on the F-20.

go figure.
 
I have heard that but I have no personal experience with the F series. The H was a vast improvement over the F-20. Too many things to list. I would not call it a weak upgrade. Actually (it doesn't have to make sense), the H
"replaced" the F12/14. The F20 had more cubic inches, but less HP. It developed its max power at 1200 rpm, the H at 1650. F20 was heavier than the H in standard form. The H could be weighted to a weight similar or higher than the F20. The F20 had slow and slower field speeds, the H had faster speeds but also the slower ones were similar to the F20. The H was simply a more modern and generally a better tractor.
 
The F20 had drop down gears to get power from the axle to the rear wheels didn't it? Did they gear down the machine? That would explain the "lugging down better" because it'd be gearing not power...
 
I thought I read, a few years ago, that the H replaced the F-12, and the M replaced the F-20, but I've got old timers so I might be wrong.
ken
 
I have owned both and the H is a much improved user friendly tractor and i think the plate on our F-20 said it was governed at 1350! Horses are horses but some are bigger than others and on the belt a H is far short of a F-20! Buzzed way to much wood with both to be told otherwise! Bud.
 
The farmall M replaced the f-20. The first M's were 247ci.& F-20 was 220ci. As far as I know the F&W30's were replaced by the w9. The 30's had a 283.7 ci. engine & the W9 was aroud 330 ci.
 
IHC considered the H a replacement for the F-14 and considered the M the replacement for the F-20 and the F-30 at the time of introduction.

Harold H
 
To add to the confusion, working from memory here. Had a good history book on developement of the H, but loaned it to my brother, he loaned it to his son, now 400 miles away, guess I'll never get it back.
There were several experimental models, including F-21 & F-22, in the developement of the H. Never released to the public, prototypes that were scrapped as developement progressed.
Also, if the H replaced the F-14, how did the F-14 engine land in the A & B?
IMHO the lineage was Farmall- Regular- H- 300 etc. Some may agree, others won't. No hard feelings.
Willie
 
Well, I kind of looked at this as what work the 2 will do. As some of the posters have said, if you are going to be on the tractor all day, the H is far superior to the F-20. If all you are doing is hooking up the belt, or putting them drwbar to drawbar, I give the nod to the F-20.

These types of comparisons are good mental exercise, but for lots of reasons, they are never "apples to apples".

Although if you think about it even more, C is closer to F12/F14, H is closer to F20, and M is closer to F30.

I have been and always will be a fan of torque and lots of CI (cubes!). High RPM's and HP with no cajones does not impress me. torque = cajones.
 
Willie i bought my f-20 back in the late 60's. My IH dealer help me restore it. He told me about the F-21 which IH used a f-20 frame & rear end and put a M engine in it.A few years later I saw one in a scrap yard.The dealer told me a few of the f-21's did get sold to the public.I wish now that i would have bought it. But young then and not enough money to buy a bunch of old tractor. I'am 64 now and retired and going back though the f-20 I bought over 40 years ago.
 
The F-20 was Nebraska tested on steel wheels and burning distillate. Running on gas with rubber tires and 8,000 ft hi altitude pistons as most were rebuilt with an F-20 will give a stock M all it wants.The H may be more user friendly but is no match for an F-20. The M was IHs replacement for the F-20.
 
And my money is on a W-30 over an M. However, I prefer an M's electric starters over a W-30's Armstrong starters!
 
I was always told the F-20 was the fore-runner to the M. Most in our area pulled the same implements moving up from the F-20s to the Ms... 2x16" or 3x14" plows. Most Hs pulled a 2x14".
 
(quoted from post at 05:33:40 05/08/11) how did the F-14 engine land in the A & B?
Click to expand...
Not even that close. They happened to share the same bore and stroke, which may have been more because of existing tooling than any specific design need. The sleeves and pistons will interchange but the pistons were a different design.
 
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