Editing Hyundai Beta engine (section)

==={{anchor|G4GR}} 1.6L (G4GR)===
The 1.6-liter Beta (Engine code: G4GR) is an in-line, spark-ignition 4-stroke, dual overhead camshaft ([[Overhead camshaft|DOHC]]) 16 valve engine and had two (2) variants depending on the vehicle's sub-model. Advertised power was 66&nbsp;kW/ 89&nbsp;hp/ 90 PS (ECE) and 126 Nm/ 93&nbsp;lb-ft of torque or 84&nbsp;kW/113&nbsp;hp/114 PS (ECE) with 143 Nm / 105&nbsp;lb-ft of torque depending on market and application.

The engine was assembled from 1995 to 2001 at the Ulsan plant. Unlike other representatives of the Beta series, this engine did not receive the second generation and was replaced by the power unit Alpha II. In a number of markets, a deferred version of 90&nbsp;hp was sold.<ref>{{cite web | url=https://otoba.ru/dvigatel/hyundai/g4gr.html#tth | title=G4GR - двигатель Хендай Лантра 1.6 литра &#124; Otoba.ru | date=18 April 2018 }}</ref>

Specification:<br/>
Cylinder bore: 77.40&nbsp;mm/ 3.051 in<br/>
Stroke: 85.00&nbsp;mm/ 3.346 in <br/>
Engine Displacement: 1599 cm3 / 97.9 cui<br/>
Compression Ratio: 9.85<br/>
Firing Order: 1-3-4-2<br/>
Idle RPM: 800°± 100<br/>
Ignition Timing at idling speed: BTDC 7°± 5°/800&nbsp;rpm(Limit: BTDC 10°± 5°/800&nbsp;rpm)<br/> 
Cylinder bore: 77.40&nbsp;mm -77.43&nbsp;mm<br/>
Out-of-roundness and taper of cylinder bore: 0.01&nbsp;mm<br/>
Clearance with piston: 0.02mm - 0.04&nbsp;mm

Piston:<br/>
Piston O.D.: 77.37-77.40&nbsp;mm<br/>
Piston Service size: 0.25, 0.50, 0.75, 1.00&nbsp;mm
(0.010, 0.020, 0.030, 0.039 in.) oversize

Valve Guide:<br/>
Installed dimension O.D. (Intake): 14&nbsp;mm (0.551 in.) <br/>
Installed dimension O.D. (Exhaust): 14&nbsp;mm (0.551 in.) <br/>
Service size: 0.05, 0.25, 0.50&nbsp;mm (0.002, 0.010, 0.020 in.) oversize

The 2nd generation Elantra (J2) and 1997-2000 Hyundai Coupe (RD) were equipped with Beta I G4GR engine and were distributed primarily within the European, Russian, Middle East and parts of Asian General Market. The vehicles sold in this market were equipped with an Adjusting Potentiometer, idle mixture.
All models except the engine in the Hyundai Coupe did not include a [[Mass flow sensor|Mass Air Flow]] (Air Mass) sensor which can be purchased separately.
For aftermarket barometric pressure (MAP) sensor installation, an integrated [[MAP sensor|Manifold Absolute Pressure]] (MAP) and the [[Temperature sensor|Intake Air Temperature (IAT) sensor]] is available.

====Applications====
* [[Hyundai Elantra#J2|Hyundai Elantra (J2)]] (1995–2000)
* [[Hyundai Tiburon#RD|Hyundai Tiburon/Coupe (RD)]] (1996–2001)