1978 Ford 4100 confusion.

[jtnaughton]

I have a new to me 1978 Ford 4100 Diesel and am having a hard time finding the correct parts for it. When I do a search in the Ford manuals, New Holland website, and other distributors, I find parts for the 1968-1975 models, but not so much for the 1976-1981 series. Is there a different model number in the late 4100 series that would allow me to have better success?

Thanks!

 

[shaun wallace]

1975 up will be 4600 unless its a woods version.

 

[jtnaughton]

Interesting. Model number is: KA214C, Unit number: 8F08B Which should be a 4100 All-Purpose, Diesel with vertical exhaust, independent 540 PTO and 8x2 transmission. 45 PTO HP. Final assembly date Jun 08, 1978.

 

[Check Break]

(quoted from post at 20:21:58 10/12/22)
Interesting. Model number is: KA214C, Unit number: 8F08B Which should be a 4100 All-Purpose, Diesel with vertical exhaust, independent 540 PTO and 8x2 transmission. 45 PTO HP. Final assembly date Jun 08, 1978.

Does your hood have louvers. Unit number might be 1968, June 8th, Day Shift.

 

[Ultradog MN]

I am not well versed in deciphering the 76
and later model numbers.
Ford did build a 4100. I think for only a
couple of years - 76 to 78 or so.
What parts do you need?
For all intents and purposes it is a
4600-SU but has a smaller engine. Probably
a 183 or 192 ci.
I think the I&T FO-41 manual covers it but
I am not home to check.

 

[Sean in PA]

The 1975-1981 4100 was the same chassis-wise as the 4600 SU, but it had the 183 ci engine with less hp. The only difference between the 4100 and 4600 SU was the engine displacement and horsepower.

If you go to the New Holland parts web site, type in 4100 into the model number field, but do not hit enter. After a couple of seconds a drop-down list will appear. The first one in the list when I do it is the 1965-1975 4000 ag chassis model, but the second one in the list is the 1975-1981 4100. Select that second one and you will get the parts diagrams for your tractor. Here is a link if you can't find it:

[u:da974ff038]Link to parts pages for 1975-1981 4100[/u:da974ff038]

All parts should be the same between the 4100 and the 4600 SU except for the engine specific differences between the 183 ci engine and the 201 ci engine like the pistons, rings, sleeves, etc.

 

[jtnaughton]

(quoted from post at 23:27:09 10/12/22)

(quoted from post at 20:21:58 10/12/22)
Interesting. Model number is: KA214C, Unit number: 8F08B Which should be a 4100 All-Purpose, Diesel with vertical exhaust, independent 540 PTO and 8x2 transmission. 45 PTO HP. Final assembly date Jun 08, 1978.

Does your hood have louvers. Unit number might be 1968, June 8th, Day Shift.

Nope, no louvers and it has an air filter on the right side of the radiator cowling.

 

[jtnaughton]

Thanks That is what I have gathered up to this point. Appreciate the response.

 

[RodinNS]

As mentioned... the 4100 was an 'SU' style tractor in that it has the planetary rear axle like the 4600 and the 183 engine. That
may be a challenge if you need engine internals... I'm not really sure. The rest of it, I think if you read closely... will be
referenced in the item lines of the parts book. Essentially you'd be looking for 4600 SU parts but should see a reference for
4100. Probably the front spindle length, wheels and pistons/rods in the engine are the only major differences.

Rod

 

[Ultradog MN]

My understanding on the 3 hole Fords is as follows.
158 CI - 4.2 B X 3.8 S

175 CI - 4.2 B X 4.2 S

183 CI - 4.2 B X 4.4 S

192 CI - 4.4 B X 4.2 S

201 CI - 4.4 B X 4.4 S


However, I thought the rods were the same across the series and the difference was in piston pin height.
Most of those sizes of pistons should be very common though a litle less for the 192.
I have never looked but pistons for a 183 might be hard to find.
Aside from his 4100 I don't know of other models that used a 183. Maybe in some of the Utility models or some of the 10 Series machines?
That is a great tractor but I never understood why Ford made them. A de-horsed SU...
Why?

 

[Fordfarmer]

At least 2 utility/industrial models used the 183. I don't remember for sure if it was used in the 10 series, but I think it was.
You have all the bores and strokes right fir each displacement.

 

[Destroked 450]

4100 has a bigger following in the UK and Ireland than in the US
I ve noticed a number of odd models I ve never seen here
It could have something to do with how they tax their tractors
I know they have to register them and keep a tax log book for any that are driven on the road

I ve talked to some of them on fb and they have very little knowledge of the SU models

 

[Sean in PA]

(quoted from post at 07:36:48 10/15/22) At least 2 utility/industrial models used the 183. I don't remember for sure if it was used in the 10 series, but I think it was.
You have all the bores and strokes right fir each displacement.

According to my references, the following models used the 183 engine. It is not a complete list, as my references only go up to around 1991:

3055 - Special "French Super" model, which was the same as a 3000 ag chassis model except for the 183 ci engine.

later 3550 - I',m not sure of the changeover date, but the earlier 3550's had the 175, the same as the rest of the 3000 series, but when they changed the model designator from C55 to K50 then engine changed to the 183.

4100 - the tractor we are discussing here

4110 - '10- series replacement for the 4100

4130 - '30- series replacement for the 4110

420 - Industrial model that replaced the 3550

445 - industrial model that replaced the 420

445A - industrial model that replaced the 445

445C - industrial model that replaced the 445A

4130N Narrow ag chassis version of the 4130

 

[Majorman]

4100 here was a 3000 front end with inboard wet brakes. Not many sold as far as I
remember, I only know of one locally.

 

[RodinNS]

I can't remember the issue exactly... but some years back someone posted about it and I remember doing some research at the time and recollect that something to do with rods or pistons was difficult. You could be correct that the pin height is different. I just remember that something in there was very difficult to obtain. The 183 was not a common engine.
I'm not sure what the reason was for that particular model. I know when you got into the 30 series tractors, they were all fitted with the double reduction axles vs the single, regardless of HP. Probably just something to do with customer preference and the desire to have brakes that work reliably for a long time...

Rod

 

[Destroked 450]

183 is a bit of a odd duck as it s the only 3 cylinder Ford tractor engine with a stroke bigger than the cylinders bore
It uses the 4000 s 201 crank in a 3000 s block
When I converted my 4000 gas to diesel I used a 183 core engine for the crank, rods, head and fuel system along with the 192 gas block and new 201 pistons. We replaced the injectors and had the pump reworked to 201 spec

I rebuild a 183 in a industrial tractor around 40 years ago, at that time we could only find the pistons at Ford at over $150 each
Google search showed Reliance and a few others offering rebuild kits today at reasonable prices

My 10 series parts book shows the 4110 having its own piston and uses the same crank as the 201 confirming it is a 183 engine, I wasn t aware they used that engine past the -600 series

My 30 series parts book shows the 4130 using the same piston as the 3930 which is the larger 4.4 bore, therefore the 4130 would have a 192 engine instead of a 183