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1951 L-185 international truck

Bryce D

Registered
thanks guys!!!

It has a red diamond 372 in it ,air brakes, two speed rear end, and a large rear window. I tried binder planet, and I'm getting a lot more info here than I ever did there. The glove box is still there I will havce to look for a build ticket next chance I get.
The numbers are L-185 W.B.266 10908. Rated at about 125 h.p.
 

S Mullins

Registered
Last Subscription Date
01/13/2016
Try Redpower forum,i have a 185 with a 406 RD i think they were made in four sizes,the most sought after being the 501 RD.
 

Farquharman

Subscriber
Last Subscription Date
08/26/2019
According to the shop manual, you have a 2 speed Eaton axle code 1412, axle model R-2585. Lubricant capacity 20 pints, ratios:5.571-7.749 or 6.166-8.577 or 6.5-9.041. Transmission wouldbe a Fuller 5-A-330(od .823) IH F-51 or Fuller 5-A-33 which is the direct in 5th. IH F-51-C. According to the shop manual on the shift pattern if 5th is far right lower corner is direct. Overdrive is far right up.
 

Bryce D

Registered
I don't know what the shift pattern is but it only feels like there are three spots up and three spots down. It did shift fairly easily.
 

MoRo

Subscriber
Age
59
Last Subscription Date
10/15/2019
The shift pattern would be on a printed sticker, directly ahead of the shifter, on the dash. Yours is missing?

Going from memory as Dad had a '54 R-160, Reverse and first took a longer throw to put into gear than 4th an 5th. 2nd and 3rd were somewhere in between. Oh his, Reverse was to the right and up, 1st below that. 2nd was to the left and up, 3rd below, center and up was 4th and 5th below. No 2-speed on that one.
 

cornbinder89

Subscriber
Last Subscription Date
05/11/2020
The silver diamond 220 and 240 engines used poured bearings until 1952. The engines were good for about 45 MPH, then you knocked the bearings out of it. Don't ask how I know! In '52 they went to inserts, and then you could do 50. At that point, the stellite/sodium exhaust valves would break! in 1955 they went to the green diamond, which for all intents and purposes was a 'modern engine'. The dual rear window L series trucks came out in 1949 - the 1950 model year. In 1950-51 model trucks, the doors had internal hinges. in 1952 IHC went to external hinges and also made changes to the front grill.

If your truck has its original glove box, carefully remove it. The original built ticket was placed there, on top of the box, at the factory. It will be a fragile paper ticket with engine and running gear noted as well as options fitted. It may be glued in place (mine was). I had the original from my 1950 L-120, S/N F-9108. First number was year built, numbers following were actual S/N (built 1949, 108th of the model. The build ticket had the actual assembly date on it - Oct 1949.
Andrew
IHC never used poured babbit in any of the engines they designed. They had inserts from the beginning. The early OHV engines (from at least the early 30's) were wet liner! They later went to dry then bored the cyl right in the block. They were way ahead of their competition. I think you are thinking of Chevy, they used poured babbit into the 50's. The SD was an IHC designed OHV that replaced the Flathead GRD which was NOT Ihc designed.
 

Heins

Subscriber
Last Subscription Date
01/02/2020
IHC never used poured babbit in any of the engines they designed. They had inserts from the beginning. The early OHV engines (from at least the early 30's) were wet liner! They later went to dry then bored the cyl right in the block. They were way ahead of their competition. I think you are thinking of Chevy, they used poured babbit into the 50's. The SD was an IHC designed OHV that replaced the Flathead GRD which was NOT Ihc designed.
Cornbinder, who designed the flathead green diamond engine or who built the engine?
 

cornbinder89

Subscriber
Last Subscription Date
05/11/2020
It was originally a Willys design and built out of house (I think Wilson machine co). IHC needed a small engine for the lightest trucks. They had been using Lycoming. They bought the rights to the engine by the 40's and the molds then had Green Diamond in the casting. Before that point they were called HD and while similer, there are a few differences.
The IHC designed engine of the time were all OHV and Wet liner, They were too big for smaller trucks they later became dry liner and then parent bore. IHC didn't know how well lighter truck would sell, and didn't want to invest in an engine until they saw they sold better then the bigger ones. By the 50's they decided to build their own small six for the light trucks, Naturally they went OHV and gear drive on the cam like all there own engines.
 

Heins

Subscriber
Last Subscription Date
01/02/2020
I always thought the green diamond engine was a better built engine than Willys flat head four they put in Jeeps.
 

Heins

Subscriber
Last Subscription Date
01/02/2020
Bryce D, are you sure your truck has air brakes, I don't think I have seen a truck that has six bolt Budd wheels have air brakes.
 

cornbinder89

Subscriber
Last Subscription Date
05/11/2020
I always thought the green diamond engine was a better built engine than Willys flat head four they put in Jeeps.
It was and it was a 6 cyl but the original design was by Willys but never used in production. It was for an export truck.
 

Bryce D

Registered
the truck has an air pump. The rear brakes on closer examination are hydraulic. I have heard people say something like air over hydraulic. This is definitely something new to me.
 

Heins

Subscriber
Last Subscription Date
01/02/2020
Bryce, your truck may have a vacuum booster for the brakes which works off engine vacuum. What does your air pump look like?
 

Steve Kunz

Subscriber
Last Subscription Date
07/10/2019
My dad has a 1951 L-180 it had a different grille and two smaller back windows instead of one large single one.
Did they change body styles that year?

Steve
This is a picture I found on line, this is the type grill and front end that my dads 1951 L-180 had.
Does anyone know when, what, why, they made the change? :shrug:
 

Attachments

Bryce D

Registered
They are both 1951 "L" trucks. The difference is the body size. When they jumped to the 185 size. it is a fair amount taller. The guy I bought mt truck from has a R 180. It is much shorter, has a green diamond 220 99hp. engine. I kinda wish I bought that truck. You can get a fair amount of parts for it through a lot of the parts houses. Once you jump up into the red diamond the parts are a lot rarer.

---------- Post added at 11:04 PM ---------- Previous post was at 10:46 PM ----------

I haven't been able to see what the air pump looks like. At the moment it is grease oil and a lot of cotton tree cotton all over it.
 
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