Real Early "Real" Jeeps   
 
 
 
 

 
An Essay on Early Jeep History
Ever since World War I the need for a "go anywhere " vehicle was being felt  by the army, which finally led Quartermaster Corps of the Army, in May 27 1940, to lay down the specifications of the type of vehicle they had in mind.

Those specifications are given below:  

 
Top speed above 55 mph without overreving.
Speed on rough terrain: 5 mph.
Fording depth: 18 in. at a speed of 3 mph.
Angle of approach: 45 degrees.
Angle of departure: 35 degrees.
Four wheel drive.
Weight, empty tank: 1300 lb.
Payload: 600 lb.
Wheelbase: 80 in.
Tread: 47 in.
Ground clearance: 6.3 in. 


 
 
Willys 3rd Generation Military Jeep 

       What is an MC-38 or M38?  

An M38 is was the replacement for the GPW's and the MB's made both by Ford and Willys. The prototype was based on a CJ-3 with a full floating rear axle and 4.88:1 gearing, later changed to the standard military 5.38:1 gearing. The prototype model had some small variances between the CJ-3A and itself it that the motor was slightly modified to accommodate a full submersion capability, the electrical system was converted from the 12v system to a 24v system, a second battery compartment was made to accommodate the second battery on the main cowl of the body just in front of where the windshield would sit on the passenger side; this caused the problem of no longer being able to place the stock heater unit under the dash because the tray sits and covers most of its location. A final variance between the CJ and the prototype was that everything underneath had skid plates or protection everything from the diffs to the tranny including the drive shafts.  

     Now on to the actual production model M38. The average M38 came with an L-134ci 4 cylinder engine, with a single bore Carter downdraft carb, a spicer T-90 3 speed cane transmission, the model 18 transfer case, 16" rims allowing for the 7.00-16's on all four corners. Some M38's had the combat rims which facilitated the changing of tires by falling into 3 different pieces, some had the winter kit which including such items as a full or half cab made of aluminum (and the full cab will support the weight of 3 people) a water type heater (takes heat from engine) or a gas powered heater (killed your mileage ~17mpg to 9 or 10 mpg when running) a heater core for the engine, and a heater core for the batteries, some had a full submersion ability of 72" or 6' underwater when equipped with the air and exhaust snorkel (they were known to be able to start underwater as long as the system remained pressurized and all ports (including clutch drain) were sealed). The rare few had a PTO winches, for the '52's that would be 1 in 100 got them, and some may have had other PTO operated equipment. There some arguments have occurred about what was the original manufacturer of winch used but in fact, many were used, but only the ramsey model 50(?) is demonstrated in the manuals and is rated for either 1 ton or 4 ton, depending on the model. The M38A1 came with the 4 ton model if so equipped.  

     The M38 are distinguished by the fact that they had the parking brake handle on the left side of the steering wheel beside the light switch. the dash was centered but the instrument cluster could be removed simply be removing four screws and disconnecting the wires leading to the instruments where the CJ's are part of the dash . Some of the city used M38's had a signal system like the old VW bugs a little arm that stuck out in the direction you wanted to turn.  

The Prototypes:  

             Bantam 40 BRC 
 

45 hp. Continental engine, weight 2050 lbs., wheelbase 79 in., 3   
speed syncromesh Warner T84 gearbox with floor mounted shift lever.   
A total of 2675 units was built in 1941.  

Ford GP  

45 hp Owen Fergusson Dearborn engine, weight 2150 lbs.,   
wheelbase 80 in., 3 speed unsynchronized Ford A gearbox with floor  
mounted shift lever. A total of 3550 units was built in 1941.  

Willys MA  

60 hp. "Go Devil" engine, weight 2450 lbs., wheelbase 80 in., 3 
speed syncromesh Warner T84 gearbox with shift lever on the steering   
post.  A total of 1500 units was built in 1941.  


In July 1941 the War Department decided to adopt one single model; the MA base was selected for its better performance but it had to be redesigned in view of the experience gained with the tests. The redesigned model was named MB by Willys but the contracts to manufacture the vehicle went both to Willys and Ford, where it was named GPW (the W was added to refer to the Willys blueprints). Meanwhile, about 1000 Bantam 40 BRCs were built for the Russian Army.  
 
 

The Case of the Signature Jeep Grill   

   John North Willys was the founder of the Willys-Overland Corporation, 
the company that  would eventually develop the WWII Jeep.   

   The Overland company was near bankruptcy in 1907, but by 1918 this   

salesman supreme had turned Willys-Overland around, and they garnered the   

second highest sales in the United States.  

  The Army set forth a list of requirements for a military vehicle and solicited  

manufacturers to produce a prototype that met these requirements. Willys and   

Ford, following an extensive road test, both on the highway and off road, were  

awarded the contract to produce the vehicles for the Army. Willys, however,   

had to modify its design to meet the Army's spec.'s for vehicle weight, needing   

to pare off 263 pounds, off of an already bare-bones vehicle. And, they had to  

do this with no sacrifice of either the strength or power. An engineer, Delmar B.  

"Barney" Roos, had worked on the Jeep project and with his patience,   

determination, and resourcefulness, disassembled the vehicle. Every bolt, every  

bracket was analyzed. Surplus material was cut away wherever possible. Studs,  

screws, even cotter pins were shortened. The sizes of clamps, nuts, and washers  

were reduced. The heavy carbon steel frame was replaced by one made of   

lighter alloy. Lighter steel was employed for the body and fenders.  

     Finally, the task came down to weighing the paint. It was determined that   

one coat would have to suffice, for a second would have meant exceeding the   

weight limit. The final product did meet the Army's specified figure--2160   

pounds--with just several ounces to spare.  

     By  October 1941, it was apparent that the Jeep's versatility and usefulness   

would far exceed the Army's original expectations. A second source was   

sought, partly to increase the supply, but apparently also largely to insure   

against the possibility of sabotage at the Willys plant. Quartermaster General   

E.B. Gregory sought out Edsel Ford with the unprecedented request that his   

company manufacture jeeps according to the Willys design-- including the   

Barney Roos "Go-Devil" engine. All parts, Edsel was told, were to be   

interchangeable between the Willys vehicles and their Ford-built clones.   

Incidentally, despite its similarity to the Willys MB, the Ford-built GPW is   

readily distinguished by its inverted U-shaped front frame cross member.   

The Willys version uses a tubular brace.  

      The facts of this particular case began as far back as 1940 (while World   

War II war was breaking out in various parts of the world). The U.S. Government  

requested that a whole bunch of different automobile manufacturers bid on the  

development of a powerful but small and lightweight vehicle for reconnaissance   

and transportation purposes (The beginning of the jeep). The three companies   

that ultimately succeeded in getting contracts for this vehicle were BANTAM,  

WILLYS-OVERLAND, AND FORD MOTOR CO.   

      WILLYS-OVERLAND was the predecessor to the Jeep Corporation, who   

was the predecessor to Chrysler Corporation at least with regards to the current   

Jeep vehicles (American Motors and Kaiser fit in there somewhere). The   

important point to this story is that Willys and Jeep are all predecessors in   

interest to Chrysler Corp. which is now running the show.  

      BANTAM (the smallest and hungriest of the three) received the first   

contract (for a prototype vehicle) and produced the very first jeep vehicle - This  

vehicle met the basic expectations of the Army, and after testing, the Army   

decided to make some changes and issue production contracts. In the mean time  

Willys and Ford decided to provide prototypes of their own (at their own   

expense) so that they could keep their foot in the door.  

     WILLYS-OVERLAND (Chryslers predecessor) received the first production   

model contract based on its more powerful engine and lower overall cost - and  

proceeded to produce the jeep vehicle while incorporating changes that were   

directed by the Quartermaster Corps. One of these directed changes was to   

incorporate a grill design similar to the one FORD had used on their earlier   

prototype. This early grill design was a fabricated grill of welded iron bars -   

similar in construction to a heavy duty Bar-B-Que grill. This is ironic that the   

company that later claims to have been all-knowing all-seeing with regards to   

the jeep was directed to use the Ford style grill and to dump their own design.  

      FORD MOTOR CO. was then offered a contract for a similar number of jeeps  

(comparable to the Willys-Overland contract) providing that Ford would agree   

to build them in such a way that all parts were interchangeable with the  

Willys-Overland model.- FORD agreed and immediately began tooling up for  

production. This contract was issued because the Army didn't have the   

confidence that Willys could keep up with the demand.  

     One of the first things that FORD did after they received the contract (in   

October 1941 shortly before Pearl Harbor) was to re-design the front grill so   

that it could be "Stamped or Pressed" out in large quantities and still be  

interchangeable with the heavier grill that Willys was using on the MB. The  

advantages of this grill over the Bar-B-Que style grill that Willys was using   

was that it was interchangeable with, easier to produce, cost less ($8.00 vs.   

$26.00), weighed less and provided the same degree of protection to the front   

of the vehicle - It was commonly referred to as a "Radiator Guard" since that   

was its primary function. Again, Ford takes the lead in the design of one of the   

jeeps most recognizable features, and Willys just sits there and brings up the   

rear.  

     WILLYS-OVERLAND continued to produce the welded bar grille design until  

approximately April 1942 - at which time they changed over to exactly the same  

pressed steel grill design that FORD had originated. This must have been hard   

to swallow for them at first - but then considered the bottom line. There is no   

indication that Willys was forced to change to this new design; therefor they   

must have felt that it was far more suited for its intended use than the   

Bar-B-Que style that they were building.   

     The relevancy of these facts will become more clear when we discuss the  

underhanded methods that would later be used to obtain a trademark on the   

front grill of the jeep by the Jeep Corporation (Willys successor - and Chrysler's  

predecessor).  

     FORD and WILLYS-OVERLAND continued to build the military jeeps   

(both using exactly the same grill design) for the remainder of the War and for   

a period of time after. FORD had built close to 280,000 jeeps when their contract   

was over. Willys-Overland built a similar number - maybe more.  

     WILLYS-OVERLAND started on a long campaign to con the American public  

into a false belief that it was their brilliance and theirs alone that developed the   

jeep vehicle - This con continues today with Chrysler Corp. continuing to   

maintain that they or their predecessor created the jeep vehicle (which is not   

true - and they know it is not true).  

     The Federal Trade Commission (FTC) stepped in, in 1943, and filed suit   

against WILLYS-OVERLAND with the result being that in 1948, WILLYS-  

OVERLAND was issued a Court Order To Cease and Desist from:  

"Representing, directly or by implication, that respondent Willys-Overland Motors,   

Inc., either acting alone or in cooperation or collaboration with the United States Army   

or with any other agency or party, created or designed the automotive vehicle known as   

the Jeep; provided, however, that this order shall not prohibit respondents from   

representing that said respondent participated in and contributed to the development   

and perfecting of said vehicle."  

     The fact that this suit was brought at all is amazing since it is hard to get the   

FTC (Federal Trade Commission) to move on anything - perhaps Ford must have   

had some influence in getting them to move on it.  

     Ultimately, Willys and Ford both submitted prototypes using Bantam plans  

(supplied by the Army) and adding their own changes. With Bantams shaky  

manufacturing and financial position, the contract was awarded to Willys, with  

Ford building vehicles to Willys specifications as a second source. This was the  

end for Bantam, but without them and a man named Karl Probst, the Jeep as we  

know it today would not be. In 1963 Kaiser took over Willys Overland and  

continued making Jeeps to his own specifications. Later in 1970 American Motor  

Company (AMC) took over Kaiser Jeep. But ever since 1987 Chrysler has owned  

the Jeep.  
 

Types of Jeeps   

  
Military Jeeps  
  

They built many types of Jeeps for many different purposes. For Military  
purposes four main Jeeps: the MC M38 made from 1950-1951, the MD M38A1  
made from 1951-1971, the M151 and the HMMWV which was a Hummer,  
Humvee, or Mutt.  

 

CJ - (Civilian Jeeps)  
  

For civilian purposes they made the CJ (Civilian Jeep). They made the first CJ in 1945 which was the CJ2A and was produced until 1949. In 1948 -1964 they made the CJ3A CJ3B which was basically un-changed from the CJ2A but offered a few variations, such as a higher hood and a larger engine.  

In 1955 CJ-5A and the CJ-5B were produced which were much different body-styles from the CJ2 and CJ3, they offered rounded fenders, instead of the flat fenders like the CJ2 and CJ3. The CJ-5 also offered a larger wheel base than the CJ2 or the CJ3. In 1955 they also made a CJ-6, it was even a larger wheel base than the CJ-5. The CJ-6 was just like the CJ-5 except for it's length, and due to this the CJ-6 was never a hot selling Jeep. In 1969 AMC (American Motor Company) took over Kaiser Jeep Co. and started making the CJ-7. Lengthwise the CJ-7was in between the CJ-5 and the CJ-6.  

   

Full Size Jeeps   
  

When the liberating heroes came home in 1945 they needed an all-terrain vehicle like the original Jeep CJ for adventure and family. Willys-Overland answered the call with the first all-steel station wagon.  

Introduced a year after the first civilian Jeep vehicle, the Jeep CJ-2A, the Willys-Overland all-steel station wagon was an auto industry first. The new wagon provided all the capability and ruggedness of the original four-wheel-drive Jeep CJ with the practicality and increased passenger and cargo space of a station wagon.  

 

Jeeps Today   
  

Today more and more people are going four wheeling to the places hard to reach by car, they can with these new models made by Jeep: the Jeep Wrangler and the Jeep Cherokee .  

Back in 1940, when the U.S. Army decided on a new, half-ton, 4x4 reconnaissance vehicle from Willys-Overland, who would have thought a legend was being born. When it came time to update the most famous vehicle in the Jeep family, Chrysler took care to survey past and present owners. Their response: “Improve it - but don’t mess it up!” Above all, it must be true to the original concept. So it’s back to round headlights instead of the YJ’s previous   

square ones and a quantum leap forward by ditching the prehistoric leaf springs for sophisticated coils. The Quadra-Coil system - pioneered on the Grand Cherokee - cures bounce, takes up less space, allows for larger tires, provides more vertical wheel travel for a smoother ride and increases the angle of approach and ramp break-over. The drivetrain is virtually unchanged but both the 4- and 6-cylinder engines are quieter and smoother. In the case of the 4-cylinder; horsepower is down three, to 120 at 5400 rpm while torque is up one, to 140 lb.-ft at 3500. The 6-cylinder does better with a one horsepower increase to 181 at 4600 rpm and a torque improvement of two - 222 lb.-ft at 2800 rpm. Part-time 4WD Command-Trac is the only 4WD system offered. With Normal and Rear Trac-Lock, which provides the added traction of a rear limited-slip differential. The Jeep TJ remains, the best no-nonsense, compact sport/utility on the market.  

Future Jeeps on the board include the 'Icon" and the "Dakar" towards the year 2005. The Jeep of the 21st century . . . imagine that!! We think, however, that the "classic Jeep " will never leave us, or go out of style. These Jeeps fit with anybody's lifestyle and offer a great chance see the world  . . . once again . . . Untouched . . . Unpaved and Unharmed  for Our Future Generations.  


  

Questions Answered by My Readers:  

Thanks to Paul Weitlap from Off-Road.com:  

What about the MB/GPW? That's the Jeep that really started it all. (Of  
course, the Willys Quad & MA which pre-date the MB, but there main  
significance is leading up to the MB.)  

The M-151 is the Mutt.  

The M-715 series 5/4 Ton trucks of the late '60's might deserve mention,  
too.  

IMHO, the Mutts and Hummers are jeeps, not Jeeps.   
  

The CJ-2A had a predecessor... the Agri-Jeep. 12 of these were built in  
1943 to illustrate the farm usefulness of the little military workhorse.  
They were employed/demonstrated at Charles E. Sorensen's (then  
Willys-Overland's president) 2000 acre Michigan farm, the USDA's Tillage  
Machinery Lab in Auburn, Alabama and several other farms across the  
nation. (Check with paisley@erols.com for more details on Agri-Jeeps -  
he has s/n 12 - and is a wealth of information on early Jeep history)  

Incidentally, CJ does not "officially" stand for Civilian Jeep. It's  
interesting to note that Willys trademarked the name "Civi-Jeep" during  
WWII in anticipation of a civilian version, but never used it. Instead,  
the model name chose for the CJ series was "Universal" until AMC dropped  
it in 1972 and they became known simply as CJ-5 or CJ-6. It is true,  
however, that DJ officially stood for Dispatch Jeep and FC stood for  
Forward Control and it's from this that most folks assume that CJ  
officially stands for Civilian Jeep.  

The CJ-3A & CJ-3B are two entirely different vehicles. The 3A is  
basically an updated 2A, while the 3B, introduced January 28 of 1953,  
used the new F-head engine, requiring the higher hood. This engine was  
actually the same displacement as the earlier L-head "Go-Devil" engine,  
but had more power from the new head design. The CJ-3A & 3B were  
produced concurrently for a while and there is some dispute over exactly  
what year the CJ-3B finally ended. Some claim the 3B continued until  
1967, but many believe these were merely left-over, unsold 1964 models.  
  

The CJ-5 was introduced in 1955, its wheelbase was only 1" longer than  
the previous CJ-2A, 3A & 3B models. The CJ-6 wasn't introduced until  
1956, it's wheelbase being 20" longer than the CJ-5. The CJ-5A is the  
model designation for the Tuxedo Park models built during the 1961 thru  
1966 model years. AFAIK, there is no such model designation as a CJ-5B.  
AMC (which stands for American Motors Corporation, not American Motor  
Company) didn't introduce the CJ-7 until the 1976 model year - and it's  
primary reason for existence was to allow an automatic transmission  
option to the CJ line-up, as the CJ-5 was deemed too short to be able to  
accommodate a reliable automatic transmission and the CJ-6 was a slow  
seller due to its awkward looks. (Though plenty of folks have swapped  
various auto trannies into the shorter CJ's - rear drivelines in these  
are always short unless the owner/fabricator has stretched the wheelbase  
somewhere.) The CJ-7 is 10" longer than the CJ-5 of the same era. (AMC  
stretched the CJ-5 from it's original 81" to 84" in 1972, likewise, the  
CJ-6 grew from 101" to 104" - this was to accommodate the longer AMC six  
and V8 engines.) Domestic production of the CJ-6 ended with the 1975  
model year, though they continued to be exported for some time  
afterwards.  

Incidentally, Kaiser-Frazer and Willys-Overland merged on April 28, 1953  
and became known as Willys Motors, Inc. I find it interesting that  
Joseph Frazer, who had previously worked in key positions at GM,  
Pierce-Arrow and Chrysler before joining Willys-Overland, was  
instrumental in convincing Willys to produce the Jeep for civilian use,  
then left to join Kaiser after an unsuccessful bid at buying the company  
in 1945 ended up owning Willys after all (along with Edgar Kaiser).  
Early in 1963, Willys Motors, Inc. changed their name to Kaiser Jeep  
Corporation, a wholly owned subsidiary of Kaiser Industries Corp.  
  

The Model 463 Jeep Station Wagon, introduced in July, 1946 was  
two-wheel-drive. It wasn't until 1949 that the four-wheel-drive version  
of the Model 463 was introduced, the 4x463. The Willys Truck,  
introduced in February of 1947, was available in either 2WD or 4WD  
versions right from the start. The truck was available in Pickup, Stake  
Bed and Cab & Chassis models. A 463 derived Panel Wagon (Model 463PD)  
was also introduced in 1947, but wasn't available in 4WD until the newer  
Model 4x473SD (now called a Sedan Delivery) and even then, not until the  
1954 model.  
  

Going four wheeling in a DJ? That's the 2WD Dispatch versions of the CJ  
line, specifically, the DJ-3A and DJ-5 models, available in either LH or  
RH drive models.  
  

It's interesting to note the 4.0L engine in the Wrangler is detuned 10  
hp from the XJ/ZJ's 4.0L. This is done with a restrictor plate (easily  
removed) in the airbox.  

You've also got a big blank space when you don't include anything on the  
early Jeep trucks (Willys Trucks, Forward Controls), the SJ Wagoneer/Cherokee/J-truck  
and Jeepster (VJ's were only 4x2's, but the C-101 & C-104 Commandos were 4x4's),  
as well as the more modern MJ, XJ, YJ and ZJ models.   

 
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