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Old 12-22-2008, 09:32 PM   post #1 of 16
DocHolliday
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Default How many HP does a Ford 9N have?

How many HP does a Ford 9n have? I heard 28. That's weak....
Is there any way I can produce more HP on my 9n? How?
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Old 12-22-2008, 09:51 PM   post #2 of 16
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Default Re: How many HP does a Ford 9N have?

Actually - the 9N tractor has closer to 23 hp. While it is "weak" by todays standards, it has about 90 torque and is one pulling beast. Try to pull a 2 bottom plow through rough land with a 25 hp "Lawn Tractor" they sell today and you will quickly see what I mean. Remember - the 9N was designed to replace the mules and horses as economically as possible. It is plenty powerful enough for a small farm, but really big stuff still needs the big boys.

There is no "real" way to significantly increase the HP on these tractors. There is a very rare Sherman high compression aluminum head, and an expensive dual exhaust system put out by N Complete - but these will only get you a few more HP for over a thousand bucks. Your call (and your pocket book), but it is better to just use the 9N on chores it was designed to perform, and buy a bigger tractor if your jobs are just to big for the 9N.

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Old 12-22-2008, 09:53 PM   post #3 of 16
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Default Re: How many HP does a Ford 9N have?

Aye,
Yeah. Yer right. I use it to mow grass at the farm. It's good but the stupid carburetor is a stupid.


Thanks for the help.
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Old 12-22-2008, 10:07 PM   post #4 of 16
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Default Re: How many HP does a Ford 9N have?

Quote:
Originally Posted by DocHolliday View Post
Aye,
Yeah. Yer right. I use it to mow grass at the farm. It's good but the stupid carburetor is a stupid.


Thanks for the help.
Have to respectfully beg your pardon on that one, Doc. The N carbs, when right work pretty darn well. Again, consider the design is more than a few years old. Biggest problem I've run into is the abuse that most of these old machines have received over the years by folks ignorant of the workings of the carb and neglect thereof. Many times folks mangle a carb beyond salvage trying to get an N to run right and all the time the problem was not in the carb.
An N in tune will idle down to 450 RPM and up through the full power spectrum to about 2200 RPM smoothly.
As Dan (I think), indicated, they do well for what they were designed.
IMHO, the biggest shortcoming of the N is lack of live hydraulics but that is something anyone with average motor skills can compensate for.
Njoy it.
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Old 12-22-2008, 10:22 PM   post #5 of 16
DocHolliday
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Default Re: How many HP does a Ford 9N have?

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Originally Posted by raytasch View Post
Have to respectfully beg your pardon on that one, Doc. The N carbs, when right work pretty darn well. Again, consider the design is more than a few years old. Biggest problem I've run into is the abuse that most of these old machines have received over the years by folks ignorant of the workings of the carb and neglect thereof. Many times folks mangle a carb beyond salvage trying to get an N to run right and all the time the problem was not in the carb.
An N in tune will idle down to 450 RPM and up through the full power spectrum to about 2200 RPM smoothly.
As Dan (I think), indicated, they do well for what they were designed.
IMHO, the biggest shortcoming of the N is lack of live hydraulics but that is something anyone with average motor skills can compensate for.
Njoy it.
Yeah. It's the rust in the gas tank too.

As in my other thread, I will post up pics of the carb and see if yall think I should just get a complete rebuild kit or just a new carb..
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Old 12-22-2008, 10:24 PM   post #6 of 16
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Default Re: How many HP does a Ford 9N have?

In France its 27 HP (they are just not right when calculating in that country).
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Old 12-22-2008, 10:30 PM   post #7 of 16
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Default Re: How many HP does a Ford 9N have?

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In France its 27 HP (they are just not right when calculating in that country).
Haha, what about in China? Everything is backwards there...
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Old 12-22-2008, 10:41 PM   post #8 of 16
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Default Re: How many HP does a Ford 9N have?

Hey Doc,If it helps any;I have heard of fellows plowing fields in south Ga.on farms the size of metro Atlanta with a 8n.back in the day.Go back and look real close at the transmission and rear-end compared to the engine.That's alot of torque from where I stand.You got a real work horse.
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Old 12-22-2008, 10:59 PM   post #9 of 16
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Default Re: How many HP does a Ford 9N have?

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Hey Doc,If it helps any;I have heard of fellows plowing fields in south Ga.on farms the size of metro Atlanta with a 8n.back in the day.Go back and look real close at the transmission and rear-end compared to the engine.That's alot of torque from where I stand.You got a real work horse.
A 8n but not a 9n
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Old 12-22-2008, 11:57 PM   post #10 of 16
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Default Re: How many HP does a Ford 9N have?

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Originally Posted by DocHolliday View Post
A 8n but not a 9n
Sorry,I never owned either,but I think they are pretty much the same in hp rating.I'm sure there's a ford guy here that can tell you the difference between a 8N and a 9N.
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Old 12-23-2008, 12:18 AM   post #11 of 16
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Default Re: How many HP does a Ford 9N have?

Wasn't their horsepower also rated at the draw bar and not the flywheel?
There's a BIG difference in the methods used.

That Briggs/Kohler etc running at 3600 RPM to develop its "rated HP" is going to have a rather short lifespan compared to an old N!
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Old 12-23-2008, 05:50 AM   post #12 of 16
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Default Re: How many HP does a Ford 9N have?

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A 8n but not a 9n

Same engine. SOme say the late 8n's made a tick more HP when they went to the side mount dist, but I doupt it more then one, or two.
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Old 12-23-2008, 07:31 AM   post #13 of 16
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Default Re: How many HP does a Ford 9N have?

Dome 8n pistons might help. HP is about 23/24 HP at the belt/pto. The nebraska test taken at different times will show different results.
Best results for you carb problem is to take the tank off and clean out the rust. Or at least drain the gas out and put a new sediment bowl assembly on. One trick I hear of as a cheap and easy (Don't have the time right now to fix) was to attach a large magnet to the outside of the tank to pull the rust away from the strainer inside the tank. I have not tried this myself but in theary it should work. I would try one on each side of the sediment bowl.


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Old 12-23-2008, 08:41 AM   post #14 of 16
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Default Re: How many HP does a Ford 9N have?

From the 8N owners manual:

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...

The 8N had a different head to increase HP a tad by increasing compression. The 9N was only a tad under these specs. The common owner will not be able to tell the power difference between the 9N and 8N tractors.

Carb design was a 1930's technology - but worked so well they used the same basic design all the way up into the late 60's. These carbs are not junk, they work extremely well with the 4 cylinder flathead engine once they are properly rebuilt and adjusted. Old gas, varnish, rust, wear, and incorrect adjustment make them (or ANY carb for that matter) much less effective.
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Old 12-23-2008, 09:49 AM   post #15 of 16
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Default Re: How many HP does a Ford 9N have?

Doc even thought my 2N only has 23 hp, when my MF gets stuck or my truck gets stuck, I get the N to pull it out. The weight and torque on the old machines is unbelievable.
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