Hyundai Beta engine
Encyclopedia
The Hyundai
Hyundai Motor Company
Hyundai Motor Company is a Korean multinational automaker based in Seoul, South Korea which, along with Kia, comprises the Hyundai Kia Automotive Group, the world's fourth largest automaker as of 2009. As of 2011, it is the world's fastest growing automaker for two years running...

 Beta engine is a 1.6 L to 2.0 L straight-4
Straight-4
The inline-four engine or straight-four engine is an internal combustion engine with all four cylinders mounted in a straight line, or plane along the crankcase. The single bank of cylinders may be oriented in either a vertical or an inclined plane with all the pistons driving a common crankshaft....

 built in Ulsan
Ulsan
Ulsan , officially the Ulsan Metropolitan City, is South Korea's seventh largest metropolis with a population of over 1.1 million. It is located in the south-east of the country, neighboring Busan to the south and facing Gyeongju to the north and the Sea of Japan to the east.Ulsan is the...

, South Korea
South Korea
The Republic of Korea , , is a sovereign state in East Asia, located on the southern portion of the Korean Peninsula. It is neighbored by the People's Republic of China to the west, Japan to the east, North Korea to the north, and the East China Sea and Republic of China to the south...

. All Beta engines are DOHC designs.

1.6

The G4GR (also called the 1.6 D) is a 1.6 L (1599 cc) DOHC engine. Output is 116 hp (85 kW) at 6000 rpm and 106 ft·lbf (143 Nm) at 4900 rpm. The engine's bore is 77.4 mm and its stroke is 85 mm.

1.8

The G4GM (also called the 1.8 D) is a 1.8 L (1795 cc) DOHC engine with a larger 82 mm bore. Output is up to 130 hp (96 kW) at 6000 rpm and 126 ft.lb of torque (170 Nm) at 4200 rpm. Its first appearance was in the 1996 Elantra
Hyundai Elantra
Launched in 1990 , the Elantra received a mid-term facelift in 1993.The Elantra was powered by a Mitsubishi-designed 1.6 L straight-4 This DOHC 16-valve 1.6 L unit produced 113 hp at 6000 rpm and could push the Elantra to 60 mph in 9.5 seconds...

.

2.0

The G4GF (also called the 2.0 D) is the 2.0L (1975cc) version, having debuted in 1997 as the uplevel engine for the original Hyundai Tiburon
Hyundai Tiburon
-RC :Tiburon first began production in late 1996. It was available in a few foreign markets with engine choices of either 1.6L or 1.8L. In the United States, the Tiburon was first offered in 1997 with base models using the Elantra's 1.8L engine while the upscale FX received a 2.0L four-cylinder...

. It shares the larger 82 mm bore of the 1.8 but is stroked to 93.5 mm. It has a cast iron engine block and aluminum DOHC cylinder heads. It uses MFI fuel injection
Fuel injection
Fuel injection is a system for admitting fuel into an internal combustion engine. It has become the primary fuel delivery system used in automotive petrol engines, having almost completely replaced carburetors in the late 1980s....

, has 4 valves per cylinder and features forged steel connecting rods. Output is 140 hp (102 kW) at 6000 rpm and 133 lb.ft of torque at 4800 rpm.

Beta II

During 2001-2002, the new Beta II (G4GC) engine made its debut in models such as the XD Elantra and GK Tiburon. Output is 138 hp (102 kW) at 6000 rpm with 136 ft.lbf of torque (184 N·m) at 4500 rpm. It has a cast iron engine block and aluminum DOHC cylinder heads. The latest version of the 2.0L Beta engine (G4GC) features CVVT, which exists only on the intake side, a first for Hyundai/Kia. 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) 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 rpm from 800 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 converterhttp://autoweb.drive.com.au/cms/A_55048/newsarticle.html


In 2008 the Beta II was modified to produce 142 hp and 137 lbft of torque.
Applications:
  • Hyundai Tiburon
    Hyundai Tiburon
    -RC :Tiburon first began production in late 1996. It was available in a few foreign markets with engine choices of either 1.6L or 1.8L. In the United States, the Tiburon was first offered in 1997 with base models using the Elantra's 1.8L engine while the upscale FX received a 2.0L four-cylinder...

  • Hyundai Elantra
    Hyundai Elantra
    Launched in 1990 , the Elantra received a mid-term facelift in 1993.The Elantra was powered by a Mitsubishi-designed 1.6 L straight-4 This DOHC 16-valve 1.6 L unit produced 113 hp at 6000 rpm and could push the Elantra to 60 mph in 9.5 seconds...

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    (MY2009-2011)
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