In the history of automotive engines, it is extremely hard to overstate the importance of the V8 design. By dividing the eight cylinders into two banks of four, designers achieved an effective, yet lightweight unit that may fit into the majority of engine bays also size to fit 4 or six-cylinder engines.
Ford failed to create the V8 engine, however it can be fairly stated that they introduced it into everyday use. Some European marques and Cadillac experienced V8 motors years before Ford created the engine that could produce inexpensive performance and produce the basis for hot rodding.
First Era – 1932-1938
The very first in the Ford L-head (flathead) V8 motors left the manufacturer on March 9, 1932. This motor used a 90-degree block, with all the valves found next to the pistons, directed upwards. The heads are not truly flat, getting four spade-shaped combustion chambers to accommodate the motion in the valves. The equipment-powered cam was located in the motor obstruct over the crankshaft and involving the tube banking institutions, driving strong lifters that behaved right on the valves. There were two drinking water pumping systems – one for each and every cylinder head.
The piston bore was 3.0625 in ., and the crank gave a cerebrovascular event of three.750 in ., for a total displacement of 221 cubic in .. Compression with carry heads was actually a conservative 5.5:1, which yielded 65 horsepower at 3,400 RPM.
Stock induction in the new flathead V8 was by a solitary tonsils downdraft carburetor as well as an aluminium intake manifold that sat involving the banking institutions of cylinders. A typical stock 65-hp Flathead V8 should produce energy economic climate at about 20 Miles per gallon.
This engine can be recognized inside the field by keeping track of the cylinder head studs, of which you can find 21 per part. Later on enhancements decreased the quantity of studs to 17.
The flathead V8 was significantly below improvement during the early years, and alterations arrived yearly. Early 1932 Design 18 motors enjoyed a track record of using oil, permeable castings, and cooling problems. In 1933, a change to aluminium heads raised the horsepower ranking to 75 for the Design 40. Cooling have also been modified and enhanced.
1934 saw the arrival of any two-barrel Stromberg carburetor, increasing output to 85 hp in the Model 40A. A cast metal crankshaft improved dependability. It was the era in the V8 famously recognized by bank robber Clyde Barrow within a letter to Henry Ford.
For 1935, the Design 38 obtained an up-to-date camshaft. By this point, over 2 million Ford flathead V8 engines had been produced for Ford automobiles and vehicles, as well as for commercial use within other vehicles. By 1936, the motor was called a Design 68 and production approved the 3 million tag.
Within the 1937 design year, the Ford V8 buyer was provided a choice of aluminum or cast iron heads on the Model 78 motor. The cast iron heads offered an increased pressure ratio of 7.5:1 and resulted in 94 horsepower compared to 6.2:1 and 85 horsepower with aluminium heads.
Also in 1937, Ford introduced the smaller 136 cubic ” Model 74 motor, ranked at 60 horsepower and 94 pound-feet of torque. This engine became called the V8-60, and can be recognized by the 17 head studs. This motor grew to become well-known in race and then for general use because it provided much better fuel economy compared to the bigger motor. 1938 saw continued manufacture of the V8-85 and also the V8-60.
Second Era – 1939-1942
For 1939, Mercury added a new version from the Ford flathead V8 design. The newest engine was bigger, displacing 239.4 cubic inches by virtue of the longer 3.1875-inch stroke. In a carry pressure ratio of 6.3:1, the brand new Model 99A offered 95 horsepower. V8 production approved the 6 million unit mark throughout this calendar year.
Both 239 and 221 cubic inch motors changed to some 24-stud head bolt pattern for 1939, making them aesthetically distinct from engines created before now. Creation ongoing in 1940 and 1941 with few changes. Mercury buyers wwmlyd the 239, and Ford buyers received the V8-85.
By the beginning of 1942, America had entered the Second World Battle, and extremely couple of civilian vehicles for any kind were produced before Ford transitioned all its facilities to the war work. Obviously, many motors such as V8s had been created throughout the battle to power different military services automobiles, but further improvement essentially ceased until the end from the battle.
The time period right right after the war was a growth time for automakers as pent-up need for new vehicles was satisfied. Nevertheless, automakers just cranked up production of 1942 styles until new vehicles might be developed. Ford abandoned the V8-85, giving all Ford and Mercury vehicles the 239 cubic ” engine, now compressing at 6.8:1 and rated at 100 hp.