Simca Poissy engine


The Simca Poissy engine, commonly known as the Simca 1100 engine, was a four-cylinder overhead valve engine developed by Simca for use in its superminis and economy cars, designed by the engineer Georges Martin. In spite of its common name, the engine actually predates the Simca 1100 model, and debuted in 1961 in the Simca 1000. It was developed and produced by Simca in the late 1960s at the manufacturer's factory in Poissy, hence its name.
The engine was first designed in a form, but was reduced and stretched in order to be used in a variety of models and versions, by Simca, the Rootes Group, Simca's final incarnation Talbot and its last parent company Peugeot, who used it until 1991 in its midsize model, the 309. The engine existed in displacements ranging from, the biggest one on both sides of the Atlantic, powering the United States-market Dodge Omni/Plymouth Horizon.
Peugeot eventually dropped the engines, replacing them with their own TU family.

Poissy engine

The Poissy engine was introduced in 1961 in the Simca 1000, a small four-door saloon car. It featured a displacement of and had an initial output of, which would be increased over the years to a maximum of on the base model. The following year, the Type 315 was used for the first time in a two-door sports model, the Simca 1000 Coupé, in a tuned form, with.
The overhead valve engine Type 315 was a modern unit, with a water-cooled inline design with cast iron crankshaft, alloy cross-flow head and five main bearings. An unusual feature on early models was the absence of a spin-on paper oil filter. Instead, the engine featured a form of centrifugal oil filter in the hollow rear crankshaft pulley, although all later versions used the more traditional disposable cartridge filters. One of its major innovations was the use of a swirl vortex on the intake valve port which gave very good combustion, and thus both power and economy for this time. This engine proved cheap to build, and several models of different sizes and market segments used this displacement, which survived until 1982, as the ever-present entry level for the Simca 1100.
In later life however, when it was installed in cars such as the Horizon and 1307/Alpine/Solara the Poissy engine was criticized for its poor mechanical refinement—in particular for its excessive tappet noise, something which led to poor press reviews. It survived as the entry level engine in the Peugeot 309 until 1991.

Smaller variants

The Poissy engine was reduced a few times, although it didn't have much use apart from the early and more compact models. In 1964, Simca developed an version for the Spanish market 1000, as cars over 0.9 L were in a higher tax bracket. This variant existed in two output levels, the most powerful of which, and two single-barrel carburetors, which increased power to. An even more economic version was created for the entire European market in late 1968, with only. These displacements were used in the Simca 1000 up to 1978.

Larger variants

In 1968, another version was created for the Spanish market, the displacement. This was the first sporty version of the 1000, with power rising to. A double-barrel carburetor was then used in the Simca 1200 S, a coupé designed by Bertone, and the CG sports car, and could reach. The regular version was later used in various models around the European market, and was even installed in the US-market version of the Simca 1100, known as the Simca 1204. It was in use until 1978.
The variant appeared in 1967, initially in the 1100 and then in the 1000. This proved to be one of the most popular displacements of the 315 engines, powering the LCV version of the 1100, known as VF2, and the Talbot Horizon's entry level version. It survived until 1991, when it was used as the base model to the Peugeot 309.
The variant debuted in 1972, and although it wasn't very popular in the 1000, it continued to be used in various Simca and Talbot models. It was famous in racing circles, by being used to power the Simca Rallye 2, a sporty version of the 1000 introduced in 1972, with two double-barrel carburetors and a maximum power of. Racing versions could be tuned well in excess of, and the three generations of the Simca Rallye using this engine are still used throughout Europe, especially France, in various national rally championships for classic cars and non-homologated cars.
The variant was first used in 1975 in the Simca 1307/Chrysler Alpine. On virtue of its size, it could reach with a double-barrel carburetor, but unlike the 1.3 L version, it was never used for racing in any capacity, Simca and Talbot preferring to use it in its larger models, including deluxe versions of the Horizon and the Solara. It also powered Europe's first soft-roader, the Matra Rancho.
The larger iteration of the Poissy engine was the variant. Like the 1.45 L engine, it debuted in the 1307/Alpine in 1975, and was positioned at the top of the range, initially only with an automatic transmission, necessary to ensure this engine could power the US-market versions of the Chrysler Europe models. It was notorious for its use in the Dodge Omni and Plymouth Horizon, and was dubbed Peugeot by the American media, despite the fact that Peugeot had nothing to do with its design. It was also used as the base engine for the three-seater coupé Matra Murena.

Different models

777 cc

This tiny model was a tax special introduced in late 1968 to fit the Simca 1000 into France's 4CV tax category. The engine code is type 359.
  • Simc'4 – 1968–1978

    844 cc

This "tax special" was only offered in the Spanish market, where cars of over received a heavy tax penalty. It was called the Simca 900. The car was introduced in 1970 with a engine. In 1973 it was reintroduced as the 900 Special, now with a Bressel 32 twin carburetor and at 5800 rpm.
  • Simca 900 – 1970–1977

    944 cc

Introduced for longitudinal applications, this engine was called the 315. In 1968 a version for transverse installation called the type 352 was introduced. Some of its improvements were also applied to the original version, which now carried the 349 code. In 1973, Simca changed their engine coding system and the longitudinal engine now became the 1D1 while the transverse model became the 3D1.
  • Simca 1000 Coupé – 1961–1966
  • Simca 1000 – 1962–1978
  • CG 1000 – 1966–1974
  • Simca 1100 – 1968–1976

    1118 cc

When installed in Peugeots, it was called the E1A engine. Originally it was called the type 350 or 351. These became the 3E1 and 1E1 respectively in 1973.
  • Simca 1000 – 1968–1978
  • Simca 1100 – 1967–1982
  • Simca-Talbot Horizon – 1977–1987
  • Peugeot 205 – July 1987 — October 1988, some Spanish built XL/GL models
  • Peugeot 309 – 1986–1989
  • Citroen C15 – 1987–1988

    1204 cc

The iterations received an increase in stroke over the 1.1 engine, to, while retaining the bore. Originally fitted to the somewhat sporting 1100 Spécial, it carried the 353 engine code. The rear-engined version was called the 354. Later the engine code was changed to 1F1, and after PSA's takeover it was briefly installed in Spanish market 205s where it was called the F1.
  • Simca 1000 GT, Rallye GT, Special
  • Simca 1200S Bertone – 1968–1971
  • Simca CG – 1967–1974
  • Simca 1100 – 1967–1979
  • Simca VF2 – 1973–1985
  • Peugeot 205 – 1987–1990, Spain only
  • Peugeot 309 – Spain only

    1294 cc

The iteration was introduced in 1971, replacing the earlier unit used. The bore was increased to, while the stroke remained. The engine code was 366 for transversal installations, while longitudinal engines were called type 371. In 1973, Simca changed their system and the engines became 3G and 1G instead. After PSA began to closer combine their operations with those of the erstwhile Simca corporation, the engine code was changed yet again, to G1A, for use in the 309 and late Horizons. The 1978-only Simca 1000 Rallye III had the most potent unit yet, the 1G4C.
  • Simca 1000 – 1972–1974
  • Simca Rallye – 1972–1978
  • Simca 1100 Special/TI – 1971–1982
  • Simca 1307 / Chrysler Alpine / Talbot 1510 – 1975–1982
  • Matra Bagheera – 1973–1976
  • Simca-Talbot Horizon – 1977–1985
  • Talbot Solara – 1980–1985
  • Peugeot 205 – Spanish-built XR/GR models
  • Peugeot 309 – 1986–1990
  • Citroen C15 – 1987–1988

    1442 cc

Introduced in 1975, this larger model carries the 6Y engine code. The 6Y1 has a single carburettor. while the 6Y2 has a double barrel one, and the 6Y4 has twin, double-barrel carbs.
  • Simca 1200 – Spain, 1979–1980
  • Simca 1307 / Chrysler Alpine / Talbot 1510 – 1975–1983
  • Matra Bagheera – 1976–1980
  • Matra Rancho – 1977–1982
  • Simca-Talbot Horizon – 1977–1987
  • Talbot Solara – 1980–1986
  • Peugeot 309 GR – Spain, 1985–1989
  • Peugeot 205 – some Spanish built models

    1592 cc

This engine was known as the 6J internally. 6J1 engines have a single carburettor, while 6J2s have a twin unit. The slightly more powerful version at fitted to the Murena is called the 6J2A.
  • Simca 1307 / Chrysler Alpine / Talbot 1510 – 1975–1984
  • Matra Murena – 1980–1983
  • Simca-Talbot Horizon – 1983–1987
  • Dodge Omni / Plymouth Horizon – 1983–1986
  • Talbot Solara – 1980–1986
  • Peugeot 205 GTX
  • Peugeot 309 SR –