S-TEC or M-TEC is a low-displacement engine range co-developed by Suzuki and Daewoo Motors for use in micro and subcompact cars. The original version was a license-built version of the Suzuki F8B engine; later generations were derived from the original design in South Korea.
S-TEC The first model was SOHC straight-three engine based on the powertrain of the Suzuki Alto.
In 2002, the range was extended to and inline-four engines and updated with EGR valve to reduce emission. A new engine plant for the updated model T4 was built. The 1.0 version is used in Chevrolet Matiz and the 1.2 in the European Chevrolet Kalos.
In 2004 the 0.8 and 1.0 engines were updated again. New intake and exhaust systems, along with low-friction aluminum cam followers with rollers were added, resulting in better economy.
CylindersDisplacementBoreStrokeCompression RatioPowerTorqueI3 at 6000 rpmat 4000 rpmI4 9.3:1at 5400 rpmat 4200 rpmI4 at 5400 rpmat 4400 rpm
Applications: 1991-2001 Daewoo Tico/Fino 1998–present Chevrolet/Daewoo Matiz Chevrolet/Daewoo Kalos
S-TEC II For 2008, a new version dubbed S-TEC II is introduced with the new Chevrolet Aveo hatchback; new features include chain-driven 16-valve DOHC valvetrain and variable intake geometry. The 1.0 L version has been introduced with the 2010 Chevrolet Spark. A 1.2 L LPG/gasoline version was developed exclusively for the India market; called SMARTECH II and used in the 2010 Chevrolet Beat. Introduced in 2013, the 1.2 L version is available in the United States version of the Chevrolet Spark.
NameDisplacementBoreStrokeCompression RatioPowerTorque9.8:1at 6400 rpmat 4800 rpmLMU10.5:1at 6000 rpmat 3800-4400 rpmLKY1.2 L9.8:1at 6400 rpmat 4800 rpmLL010.5:1at 6400 rpmat 6400 rpm
Applications: 2008-2011 Chevrolet Aveo 2010–present Chevrolet Sail 2010–2022 Chevrolet Beat/Spark 2018–present Wuling Formo 2002-2012 Micro Privliege
S-TEC III NameDisplacementBoreStrokeCompression RatioPowerTorqueLCU10.2:1at 6000 rpmat 4200 rpmL2B10.2:1at 6000 rpmat 3800 rpmLJO T9.8:1at 5500 rpmat 2000-3800 rpm
1.4 L applications:
Chevrolet Sail (second generation)
Chevrolet Sail (third generation) 2013-2015 Chevrolet Spin Baojun 630 2013–2016 Chevrolet Lacetti/Buick Excelle (first generation) 2016–present Buick Excelle (second generation) Wuling Rongguang Wuling Hongguang V (later Rongguang V) Wuling Hongguang Wuling Hongguang S Wuling Hongguang S1/Confero S/Formo Wuling Zhengcheng Wuling Victory Buick Verano (second generation, China) Baojun 310/310W Baojun 330 Baojun 610/630 Baojun 730/Wuling Cortez CT Baojun 510 Baojun 530/Wuling Almaz/Chevrolet Captiva/MG Hector Chevrolet Lova RV 2017–present Chevrolet Cavalier 2014–2020 Chevrolet Cruze Classic (China) 2014–2020 Chevrolet Cruze (China) 2021–present Buick Velite 6 PHEV 2012-present Chevrolet Cobalt (Uzbekistan) NOTE: Some horsepower and torque number have small differences on different models.
See also GM Family 1 engine (called E-TEC by Daewoo) GM Small Gasoline Engine GM Family 0 engine
References