The Chrysler flathead engine is a flathead automotive engine manufactured by the Chrysler Corporation from 1924 through the early 1960s. The flathead engine came in four-,six-, and eight-cylinder configurations and varying displacement, with both a cast iron and cast aluminum cylinder head. It was installed in Chrysler, DeSoto, Dodge and Plymouth branded vehicles.
Chrysler introduced a straight-four in 1926 when the Maxwell Motor Corporation was re-organised into the Chrysler Corporation in 1925.[1] Initially used by Chrysler, the straight-four was fitted to Plymouth cars and Dodge light trucks beginning in 1929, lasting in production through 1933.
The original version displaced 185.8cuin (3,044cc) and produced 38hp (28kW). This was only produced in 1926, with displacement reduced to 170.3cuin (2,791cc) for 1927 and 1928. Power was initially rated the same but was upped to 45hp (34kW) during the 1928 model year.
After the introduction of the Plymouth brand in 1929, the base engine has been subjected to a major redesign and enlarged to 175.4cuin (2,874.3cc) with the power rating remaining the same. It also equipped Dodge light trucks in 1929–1930. It was enlarged again to 196.1cuin (3,213cc) in 1930 with 48hp (36kW). The engine was revised for 1931 with 56hp (42kW) and 1932 with 65hp (48kW) for Plymouth only, Dodge continued with the 48hp (36kW) from 1931 to 1933. A small-bore version was developed for export markets in 1931, with a narrower bore which brought the RAC rating down from 21 to 15.6hp. For 1932 the bore was reduced further, bringing the tax horsepower rating to just beneath 15.5.
The first six-cylinders was the B-Model (seven main bearings) and introduced in 1924 with the first Chrysler Corporation production, the B70.[1] An upscale version designated E-Model equiped the new Chrysler Imperial E80 in 1926, and a downscale one named H-Model followed in 1927 (Chrysler Series 70). After the purchase of Dodge Brothers Inc. in 1928, Chrysler Corporation had five straight-6s in production with the addition of the Victory and Senior Dodge Brothers engines.[1]
So, with the introduction of the new Desoto brand in 1929, came a new and cheaper to product six cylinders, the K-Model (four main bearings, deep skirts).[1] By mid-1930, it partially replaced the previous engines in varying displacements on passenger cars, in conjunction with an all-new straight-8 block. Only the Imperial's engine remains in production for the Dodge Trucks[1] 2-ton Models F-40 & K-50, 3-ton models F-60 & K-70, 2 & 3-ton Special, buses from 1930 to 1934-35. To replace these two engines, a new and very large six cylinders was launched in late 1936 (331 cu. in.). The 1956 C-3 Series was the last to use this big straight-6 (413 cu. in.).
In 1932, the Ford's V8 flathead launch shook up the market. The demand for larger engines was even for entry-level brands. A new straight-6 for Plymouth (PC/PD) and Dodge (DP/DQ) came in production in 1933 (shallow skirt, known as the "23 in block", with a head desk length of 580 mm), followed by a larger variant for Desoto (S3) and Chrysler Royal C16) in 1937 ("25 in block" – 640 mm), marking the K-Model end. There is one exception to this: when Chrysler established an engine foundry in Windsor, Canada in 1938, it was decided to only use the long block for all Canadian-built engines. These engines received a trailing "C" in their designation, becoming P8C for example. Thanks to judicious dimensioning, the Canadian 201- and 218-cubic inch engines had nearly identical displacement to their American cousins.[3]
Beginning in 1938, the 201cuin (3,299cc)inline-six was used in Massey Harris's Model 101tractor (later known as the 101 Super). It continued to be used by Massey until 1940, when it was supplanted by the 218cuin (3,568cc).[4] In 1940, Chrysler's 242cuin (3,966cc) straight six went into Massey's 201 Super, which lasted until 1942.[4]
The last automotive use of the Chrysler flathead inline-six was in 1968. It was replaced by the much more efficient OHVSlant-6 released in 1960, which appeared in most Dodge trucks starting in 1961. According to the Standard Catalog of American Light-Duty Trucks, the Dodge Power Wagon WM300 used the 251 inline flathead six until 1968, after which the Dodge WM300 was dropped for the 1969 production year. The flathead remained in production until the early 1970s for industrial and agricultural use.[citation needed]
The new in-line 8-cylinder engine is largely based on the six-cylinder engine that appeared on the Desoto Model K. It has five main levels, the central one being wider.[1] When the engineers had to rebore the cylinders to 3-1/2 inches, the space between each pair of cylinders was modified. This applies to all blocks with the same bore.
In the case of the Imperial (CG, CH) then Custom imperial (CL, CW), a new and unique straight-8 engine was created with 9 main bearings and equiped with a two-barrel downdraft carburetor. From the CW model, the cylinder head is made of aluminium. It also powered the Dodge Trucks G-80 models (1931-1934) and Fargo buses (1930-1932).[1]
Displacement
Years
Horsepower
Applications
Bore
Stroke
208cuin (3,404cc)
1930-1931
70
DeSoto Series CF
2+7⁄8in (73.0mm)
4in (101.6mm)
221cuin (3,617cc)
1930-1932
75
Dodge Series DC (discontinued September 1931)
4+1⁄4in (108.0mm)
1931-1932
77
DeSoto Series CF
240cuin (3,938cc)
1931-1932
84
Dodge Series DG
3in (76.2mm)
1931
80
Chrysler Series CD (until January 1931)
261cuin (4,273cc)
1931
88
Chrysler Series CD (from January 1931)
3+1⁄8in (79.4mm)
274cuin (4,486cc)
1933
90 (std.) 98 (opt.)
Chrysler Series CT
3+1⁄4in (82.6mm)
4+1⁄8in (104.8mm)
1935
105 (std.) 110 (opt.)
Chrysler Series CZ
1936
Chrysler Series C-8
1937
110 (std.) 115 (opt.)
Chrysler Imperial Series C-14
282cuin (4,622cc)
1931
100
Chrysler DeLuxe CD Series
4+1⁄4in (108.0mm)
1932
100
Chrysler Series CD
1932
90 (std.) 100 (opt.)
Dodge Series DK
1933
100 (std.) 94 (opt.)
Dodge Series DO
299cuin (4,894cc)
1932
100
Chrysler Series CP (Chrysler Hurlingham in the UK)
The inline-six engine is a piston engine with six cylinders arranged in a straight line along the crankshaft. A straight-six engine has perfect primary and secondary engine balance, resulting in fewer vibrations than other designs of six or fewer cylinders.
The Chrysler B and RB engines are a series of big-block V8 gasoline engines introduced in 1958 to replace the Chrysler FirePower engines. The B and RB engines are often referred to as "wedge" engines because they use wedge-shaped combustion chambers; this differentiates them from Chrysler's 426 Hemi big block engines that are typically referred to as "Hemi" or "426 Hemi" due to their hemispherical shaped combustion chambers. The corporation had been seeking a smaller and lighter replacement for its FirePower engines, in part because new styling dictates meant moving the engine forward in the chassis which negatively affected weight distribution.
The LA engines are a family of pushrod OHV small-block 90° V-configured gasoline engines built by Chrysler Corporation. They were factory-installed in passenger vehicles, trucks and vans, commercial vehicles, marine and industrial applications from 1964 through 2003. Their combustion chambers are wedge-shaped, rather than polyspherical, as in the predecessor A engine, or hemispherical in the Hemi. LA engines have the same 4.46 in (113 mm) bore spacing as the A engines.
The Chrysler A engine is a small-block V8 gasoline engine built by Chrysler with polyspherical combustion chambers. It was produced from 1956 until 1967, when it was replaced by the wedge-head LA engine, although the LA was in production alongside the A from 1964 - 1967. It is not related to the hemispherical-head Hemi engine of the 1950s.
The Slant-Six is the popular name for a Chrysler inline-6 internal combustion engine with an overhead valve reverse-flow cylinder head and cylinder bank inclined at a 30-degree angle from vertical. Introduced in 1959 for the 1960 models, it was known within Chrysler as the G-engine. It was a clean-sheet design that began production in 1959 at 170 cubic inches (2.8 L) and ended in 2000 at 225 cubic inches (3.7 L). It was a direct replacement for the flathead Chrysler straight six that the company started business with in 1925 until the old design was discontinued in the 1960s.
The 2.2 and 2.5 are a family of inline-4 engines developed by Chrysler Corporation originally for the Chrysler K- and L-platforms cars and subsequently used in many other Chrysler vehicles. After its launch in 1981, it became the basis for all Chrysler-developed 4-cylinder engines until the Chrysler 1.8, 2.0 & 2.4 engine family was released in 1994. It was the first Chrysler engineered four cylinder engine since the Chrysler flathead four cylinder was discontinued in 1933.
The Chrysler 1.8, 2.0, and 2.4 are inline-4 engines designed originally for the Dodge and Plymouth Neon compact car. These engines were loosely based on their predecessors, the Chrysler 2.2 & 2.5 engine, sharing the same 87.5 mm (3.44 in) bore. The engine was developed by Chrysler with input from the Chrysler-Lamborghini team that developed the Chrysler/Lamborghini Formula 1 V12 engine in the early 1990s.
The Chrysler Hemi-6 engine is a family of inline six-cylinder petrol engines produced by Chrysler Australia in three piston displacements and multiple configurations. Hemi-6 engines were installed in Australian-market Chrysler Valiants from 1970 through 1981. It was also installed in the Valiants closely related variants, the Chrysler VIP, the Chrysler by Chrysler & the Valiant Charger.
The Ford flathead V8 is a V8 engine with a flat cylinder head designed by the Ford Motor Company and built by Ford and various licensees. During the engine's first decade of production, when overhead-valve engines were used by only a small minority of makes, it was usually known simply as the Ford V‑8, and the first car model in which it was installed, the Model 18, was often called simply the "Ford V-8", after its new engine. Although the V8 configuration was not new when the Ford V8 was introduced in 1932, the latter was a market first in the respect that it made an 8-cylinder affordable and a V engine affordable to the emerging mass market consumer for the first time. It was the first independently designed and built V8 engine produced by Ford for mass production, and it ranks as one of the company's most important developments. A fascination with ever-more-powerful engines was perhaps the most salient aspect of the American car and truck market for a half century, from 1923 until 1973. The engine was intended to be used for big passenger cars and trucks; it was installed in such until 1953, making the engine's 21-year production run for the U.S. consumer market longer than the 19-year run of the Ford Model T engine for that market. The engine was on Ward's list of the 10 best engines of the 20th century. It was a staple of hot rodders in the 1950s, and it remains famous in the classic car hobbies even today, despite the huge variety of other popular V8s that followed.
The Ford Motor Company produced straight-six engines from 1906 until 1908 and from 1941 until 2016. In 1906, the first Ford straight-six was introduced in the Model K. The next was introduced in the 1941 Ford. Ford continued producing straight-six engines for use in its North American vehicles until 1996, when they were discontinued in favor of more compact V6 designs.
The Mitsubishi Astron or 4G5/4D5 engine, is a series of straight-four internal combustion engines first built by Mitsubishi Motors in 1972. Engine displacement ranged from 1.8 to 2.6 litres, making it one of the largest four-cylinder engines of its time.
The Pontiac straight-6 engine is a family of inline-six cylinder automobile engines produced by the Pontiac Division of General Motors Corporation in numerous versions beginning in 1926.
The Chrysler Hemi engines, known by the trademark Hemi or HEMI, are a series of American V8 gasoline engines built by Chrysler with overhead valve hemispherical combustion chambers. Three different types of Hemi engines have been built by Chrysler for automobiles: the first from 1951 to 1958, the second from 1964 to 1971, and the third beginning in 2003. Although Chrysler is most identified with the use of "Hemi" as a marketing term, many other auto manufacturers have incorporated similar designs. The engine block and cylinder heads were cast and manufactured at Indianapolis Foundry.
The AMC straight-4 engine is a 2.5 L inline-four engine developed by American Motors Corporation (AMC) that was used in a variety of AMC, Jeep, and Dodge vehicles from 1984 to 2002.
The EA827 family of petrol engines was initially developed by Audi under Ludwig Kraus leadership and introduced in 1972 by the B1-series Audi 80, and went on to power many Volkswagen Group models. This is a very robust water-cooled engine configuration for four- up to eight- cylinders. In Brazil this engine was produced under the name Volkswagen AP AP.
The Polyspheric or Poly engines were V8 engines produced by Chrysler from 1955 to 1958 as lower-cost alternatives to the Hemi engines. These engines were based on the Hemi engines, using the same blocks and crankshaft parts, but completely different cylinder heads, pushrods, exhaust manifolds and pistons.
The World Gasoline Engine is a family of straight-4 piston engines, based on the Global Engine Alliance design.
The Standard SC engine is a cast-iron overhead valve straight-four engine designed and initially produced by Standard Triumph. Over its production life displacement grew from an initial size of just over 800 cc to nearly 1500 cc. Introduced in the Standard Eight in 1953, it would eventually be used in a wide range of vehicles from Standard, Triumph, and MG.
The Dodge Series D5 appeared in October 1936 for the 1937 model year, replacing the previous year's Series D2.
The Dodge Series D8 appeared in October 1937 for the 1938 model year, replacing the previous year's Series D5. Production of the 1938 Dodges ran from September 1937 until July 1938, which was the typical pattern for Dodge in this period. As before, there was also a "Junior" line of Plymouths using Dodge badges and trim for the Canadian and global export markets. The main version is sometimes referred to as the "Senior" Dodge to distinguish the two.
↑ Zavitz, R. Perry (1990). "The Postwar Plymouths Changing Personalities From Staid to Flashy". In Lee, John (ed.). Standard Catalog of Chrysler, 1924-1990. Iola, WI: Krause Publications, Inc. p.119. ISBN0-87341-142-0.
This page is based on this Wikipedia article Text is available under the CC BY-SA 4.0 license; additional terms may apply. Images, videos and audio are available under their respective licenses.
