Editing Hyundai Beta engine (section)

==Beta II==
[[file:Hyundai Beta Engine For Elantra XD.JPG|thumb|250px|1.8L G4GB<br>"XD18" Elantra 1.8GL Early Model(JDM)]]
==={{anchor|G4GB}} 1.8L (G4GB)===
The 1.8-liter Hyundai G4GB engine was manufactured from 2000 to 2010. The motor belonged to the Beta II series therefore had an upgraded design relative to its predecessors.

====Applications====
* [[Hyundai Elantra#XD|Hyundai Elantra (XD)]] (2000–2006)
* [[Hyundai Lavita|Hyundai Matrix]] (2001–2007)
* [[Kia Optima#MS|Kia Optima (MS)]] (2000–2005)
* [[Kia Cerato#LD|Kia Cerato (LD)]] (2004–2008)

==={{anchor|G4GC}} 2.0L (G4GC)===
The 2.0-liter Hyundai Beta II engine was produced from 2001 to 2012. The power unit since 2003 was equipped with the [[Variable Valve Timing|Continuously Variable Valve Timing]] system. The engine has a life expectancy of 300,000 km. 

Four-stroke, four-cylinder petrol with electronic control system of fuel injection and ignition, with in-line arrangement of cylinders and pistons rotating one common crankshaft, with the top arrangement of two camshafts (with the CVVT system). The engine has a closed-type liquid cooling system with forced circulation. The lubrication system is combined: under pressure and spraying.

The cylinder head is made of an aluminum alloy. The drive of the camshafts is carried out by a toothed belt. The belt itself drives only the exhaust camshaft. The intake camshaft is driven from the exhaust camshaft by means of an internal chain located at the rear end of the cylinder head, as is the mechanism for changing the valve timing. There are no hydraulic lifters. Adjustment of valve backlash is required every 90,000 km.

During 2001-2002, the engine made its debut in models such as the (XD) Elantra and (GK) Tiburon. Output is 138&nbsp;hp (102&nbsp;kW) at 6000&nbsp;rpm with {{convert|136|lb·ft|N.m}} of torque at 4500&nbsp;rpm{{Citation needed|date=September 2011}}. It has a cast iron engine block and aluminum [[DOHC]] cylinder heads. 

For the latest version the following changes were noted:
* Redesigned block with external contouring of cylinder bores (instead of flat sides), extra ribbing and one extra transaxle fixing point (now 5)(less NVH)
* Crankshaft now has 8 counterweights instead of 4.(NVH)
* Cast & ribbed aluminium sump pan (instead of pressed steel sheet) with stronger joint to transaxle (NVH)
* Reshaped combustion chambers, ports & pistons (performance, [fuel] economy, emissions)
* {{cvt|20|mm|in|1}} longer intake rams, 8% smaller surge tank, resonator added, spark timing and valve lift optimized, lighter valve springs, denser conrod bearings, returnless fuel system (instead of return type) with higher fuel pressure and smaller injectors (torque spread and economy)
* Cylinder head machined to more precise tolerances
* Head gasket now 2-layer (instead of 3)
* Idle speed reduced to 700&nbsp;rpm from 800&nbsp;rpm (NVH)
* Hydraulic engine mounts (4) instead of rubber (NVH)
* Heat shield installed between engine and air filter, reducing heating of induction air.
* New camcover with I-piece high-specific gravity [[polypropylene]] baffle (ilo 2-piece pp)
* Oil flow reduced (economy)
* Mechanical valve lash adjusters (solid lifters) replace hydraulic, improving valve clearance precision (durability).
* Lower valve spring load reduces valve train friction (performance).
* Engine cover installed (NVH and dress up engine bay)
* Catalytic converter now upstream adjoining exhaust manifold (ilo under car) (emissions)
* Other detail changes to: [[alternator]], intake manifold brace, power steering & a/c pulleys, idle speed actuator, oil filler cap & drive plate between engine & torque converter [https://web.archive.org/web/20070111083816/http://autoweb.drive.com.au/cms/A_55048/newsarticle.html]

In 2008 the Beta II was modified to produce {{Convert|143|hp|kW|0}} and {{cvt|137|lbft|Nm}} of torque.

====Applications====
* [[Hyundai Elantra#XD|Hyundai Elantra (XD/HD)]] (2000–2010)
* [[Hyundai i30#FD|Hyundai i30 (FD)]] (2007–2012)
* [[Hyundai Tiburon#GK|Hyundai Tiburon/Coupe]] (2001–2008)
* [[Hyundai Trajet]] (1999–2008)
* [[Hyundai Tucson#JM|Hyundai Tucson (JM)]] (2004–2009)
* [[Kia Carens#RS|Kia Carens (RS)]] (2002–2006)
* [[Kia Cee'd#ED|Kia Cee'd (ED)]] (2006–2012)
* [[Kia Cerato#LD|Kia Cerato (LD)]] (2003–2008)
* [[Kia Soul#AM|Kia Soul (AM)]] (2008–2011)
* [[Kia Sportage#KM|Kia Sportage (KM)]] (2004–2010)