Editing Daewoo S-TEC engine

{{More citations needed|date=January 2021}}
{{Infobox automobile engine
| name          = Daewoo S-TEC engine
| aka           = {{ubl |M-TEC|P-TEC|SMARTECH II}}
| manufacturer  = [[Daewoo Motors]] (1991-2002) <br/> [[General Motors]] (2002-present)
| production    = 1991-present
| successor     = [[GM Small Gasoline Engine|Small Gasoline Engine]]
| configuration = [[Straight-three engine|Inline-3]], [[Straight-four engine|Inline-4]]
| block         = [[Cast iron]]
| head          = [[Aluminum]]
| valvetrain    = {{ubl |[[DOHC]] [[Multi-valve#Four valves|4 valves x cyl.]]|[[SOHC]] 2 valves x cyl.}}
| turbocharger  = Mitsubishi Heavy Industries one-stage single-scroll (Daewoo S-TEC III LL5 versions)
| fuelsystem    = [[Fuel injection]]
| fueltype      = {{ubl |[[Gasoline]]|[[Autogas|LPG]]}}
| oilsystem     = [[Wet sump]]
| coolingsystem = [[Radiator (engine cooling)|Water-cooled]]
| displacement  = {{Unbulleted list|{{convert|796|cc|L|1|order=flip|abbr=on}}|{{convert|995|cc|L|1|order=flip|abbr=on}}|{{convert|1150|cc|L|1|order=flip|abbr=on}}|{{convert|1199|cc|L|1|order=flip|abbr=on}}|{{convert|1206|cc|L|1|order=flip|abbr=on}}|{{convert|1249|cc|L|1|order=flip|abbr=on}}|{{convert|1399|cc|L|1|order=flip|abbr=on}}|{{convert|1451|cc|L|1|order=flip|abbr=on}}|{{convert|1485|cc|L|1|order=flip|abbr=on}}}}
| bore          = {{Unbulleted list|{{convert|68.5|mm|in|2|abbr=on}}|{{convert|69.7|mm|in|2|abbr=on}}|{{convert|70.5|mm|in|2|abbr=on}}|{{convert|74.71|mm|in|2|abbr=on}}}}
| stroke        = {{Unbulleted list|{{convert|67.5|mm|in|2|abbr=on}}|{{convert|72|mm|in|2|abbr=on}}|{{convert|78|mm|in|2|abbr=on}}|{{convert|79|mm|in|2|abbr=on}}|{{convert|80|mm|in|2|abbr=on}}|{{convert|84.7|mm|in|2|abbr=on}}}}
| power         = {{convert|36-110|kW|PS hp|abbr=on|0}}
| torque        = {{convert|71.5-230|Nm|lbft|abbr=on}}
| emissions control = [[Exhaust gas recirculation|EGR]]
| compression   = 9.3:1, 9.5:1, 9.8:1, 10.2:1, 10.5:1
}}

'''S-TEC''' or '''M-TEC''' is a low-displacement engine range co-developed by [[Suzuki]] and [[GM Daewoo|Daewoo Motors]] for use in micro and subcompact cars. The original version was a license-built version of the [[Suzuki F engine#F8B|Suzuki F8B]] engine; later generations were derived from the original design in South Korea.

==S-TEC==
The first model was {{convert|796|cc|L|1|order=flip|abbr=on}} [[SOHC]] [[straight-three engine]] based on the powertrain of the [[Suzuki Alto]].

In 2002, the range was extended to {{convert|995|cc|L|1|order=flip|abbr=on}}  and {{convert|1150|cc|L|1|order=flip|abbr=on}} [[inline-four engine]]s and updated with [[Exhaust gas recirculation|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 (mechanism)|cam]] followers with rollers were added, resulting in better [[Fuel economy in automobiles|economy]].

{| class=wikitable
|-
!Cylinders!!Displacement!!Bore!!Stroke!!Compression Ratio!!Power!!Torque
|-
|I3 ||{{convert|796|cc|L|1|order=flip|abbr=on}}||rowspan=3|{{convert|68.5|mm|in|2|abbr=on}}||{{convert|72|mm|in|2|abbr=on}}||||{{convert|36|kW|PS hp|abbr=on|0}}<br/>at 6000&nbsp;rpm||{{convert|71.5|Nm|lbft|abbr=on}}<br/>at 4000&nbsp;rpm
|-
|I4 |||{{convert|995|cc|L|1|order=flip|abbr=on}}||{{convert|67.5|mm|in|2|abbr=on}}||rowspan=2|9.3:1||{{convert|48.5|kW|PS hp|abbr=on|0}}<br/>at 5400&nbsp;rpm||{{convert|91|Nm|lbft|0|abbr=on}}<br/>at 4200&nbsp;rpm
|-
|I4 |||{{convert|1150|cc|L|1|order=flip|abbr=on}}||{{convert|78|mm|in|2|abbr=on}}||{{convert|53|kW|PS hp|abbr=on|0}}<br/>at 5400&nbsp;rpm||{{convert|104|Nm|lbft|0|abbr=on}}<br/>at 4400&nbsp;rpm
|}

Applications:
*1991-2001 [[Daewoo Tico|Daewoo Tico/Fino]]
*1998–present [[Chevrolet Spark|Chevrolet/Daewoo Matiz]]
*[[Chevrolet Aveo|Chevrolet/Daewoo Kalos]]

==S-TEC II==
For 2008, a new {{convert|1206|cc|L|1|order=flip|abbr=on}} version dubbed '''S-TEC II''' is introduced with the new [[Chevrolet Aveo]] hatchback; new features include chain-driven 16-valve [[DOHC]] [[valvetrain]] and [[Variable Length Intake Manifold|variable intake geometry]]. The 1.0 L version has been introduced with the 2010 [[Chevrolet Spark]]. A 1.2 L [[Autogas|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]].

{| class=wikitable
|-
!Name!!Displacement!!Bore!!Stroke!!Compression Ratio!!Power!!Torque
|-
||||{{convert|995|cc|L|1|order=flip|abbr=on}}||{{convert|68.5|mm|2|abbr=on}}||{{convert|67.5|mm|2|abbr=on}}||9.8:1||{{convert|50|kW|PS hp|abbr=on|0}}<br/>at 6400&nbsp;rpm||{{convert|93|Nm|lbft|0|abbr=on}}<br/>at 4800 rpm
|-
||LMU||{{convert|1206|cc|L|1|order=flip|abbr=on}}||{{convert|69.7|mm|in|2|abbr=on}}||{{convert|79|mm|in|2|abbr=on}}||10.5:1||{{convert|62|kW|PS hp|abbr=on|0}}<br/>at 6000 rpm||{{convert|114|Nm|lbft|0|abbr=on}}<br/>at 3800-4400 rpm
|-
||LKY||1.2 L||||||9.8:1||{{convert|60|kW|PS hp|abbr=on|0}}<br/>at 6400 rpm||{{convert|111|Nm|lbft|0|abbr=on}}<br/>at 4800 rpm
|-
||||{{convert|1199|cc|L|1|order=flip|abbr=on}}||||||||{{ubl |{{convert|80.5|PS|kW hp|abbr=on}}<br/>at 6200 rpm ([[Gasoline]])|{{convert|80.04|PS|kW hp|abbr=on}}<br/>at 6400 rpm ([[Autogas|LPG]])}}||{{ubl | {{convert|108|Nm|lbft|0|abbr=on}}<br/>at 4400 rpm (Gasoline)|{{convert|104|Nm|lbft|0|abbr=on}}<br/>at 4400 rpm (LPG)}}
|-
||LL0||{{convert|1249|cc|L|1|order=flip|abbr=on}}||{{convert|70.5|mm|in|2|abbr=on}}||{{convert|80|mm|in|2|abbr=on}}||10.5:1||{{convert|62.66|kW|PS hp|abbr=on|0}}<br/>at 6400 rpm||{{convert|112.05|Nm|lbft|abbr=on}}<br/>at 6400 rpm
|}

Applications:
* 2008-2011 [[Chevrolet Aveo]]
* 2010–present [[Chevrolet Sail]]
* 2010–2022 [[Chevrolet Spark|Chevrolet Beat/Spark]]
* 2018–present [[Wuling Hongguang S1|Wuling Formo]]<ref>{{cite web |url=https://wuling.id/en/formo |title = Formo Minibus Blind Van: Price, Specifications, Interior 2022 {{!}} Wuling}}</ref>
* 2002-2012 Micro Privliege

==S-TEC III==
{| class=wikitable
|-
!Name!!Displacement!!Bore!!Stroke!!Compression Ratio!!Power!!Torque
|-
||LCU|||{{convert|1399|cc|L|1|order=flip|abbr=on}}|||||||10.2:1
||{{convert|76|kW|PS hp|0|abbr=on}}<br/>at 6000 rpm||{{convert|131|Nm|lbft|0|abbr=on}}<br/>at 4200 rpm
|-
||L2B|||{{convert|1485|cc|L|1|order=flip|abbr=on}}||{{convert|74.7|mm|in|abbr=on|2}}||{{convert|84.7|mm|in|2|abbr=on}}||10.2:1||{{convert|85|kW|PS hp|abbr=on|0}}<br/>at 6000 rpm||{{convert|144|Nm|lbft|0|abbr=on}}<br/>at 3800 rpm
|-
||LJO|||{{convert|1451|cc|L|1|order=flip|abbr=on}} T||{{convert|73.8|mm|in|abbr=on|2}}||{{convert|84.7|mm|in|2|abbr=on}}||9.8:1||{{convert|108|kW|PS hp|0|abbr=on}}<br/>at 5500 rpm||
{{convert|250|Nm|lbft|0|abbr=on}}<br/>at 2000-3800 rpm
|}

1.4&nbsp;L applications:

* [[Chevrolet Sail]] (second generation)

{{hidden begin|title=1.5&nbsp;L applications:|titlestyle=background:#88FF88; text-align:left;|bodystyle=text-align:left;}}
* [[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|Baojun 530/Wuling Almaz/Chevrolet Captiva/MG Hector]]
* Chevrolet Lova RV
* 2017–present [[Chevrolet Cavalier#Fourth generation (2016)|Chevrolet Cavalier]]
* 2014–2020 Chevrolet Cruze Classic (China)
* 2014–2020 Chevrolet Cruze (China)
* 2021–present [[Buick Velite 6|Buick Velite 6 PHEV]]
*2012-present Chevrolet Cobalt (Uzbekistan){{hidden end}}
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==
{{Reflist}}

{{DEFAULTSORT:Daewoo S-Tec Engine}}
[[Category:Daewoo engines]]
[[Category:Suzuki engines]]
[[Category:Straight-three engines]]
[[Category:Straight-four engines]]
[[Category:Gasoline engines by model]]