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Toyota GR engine

 
Wikipedia: Toyota GR engine
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Toyota GR engine
1GR-FE
Manufacturer Toyota Motor Corporation
Production 2002–
Predecessor Toyota MZ engine
Toyota JZ engine (I6)
Toyota VZ engine

The Toyota GR engine family is an open-deck, V6 piston engine series. The GR series has a 60° die-cast aluminum block and aluminum DOHC cylinder heads. This engine series also features 4 valves per cylinder, forged steel connecting rods, one-piece cast camshafts, and a cast aluminum lower intake manifold. Some variants use multi-port fuel injection, some have D4 direct injection others have a combination of direct injection and multi-port fuel injection or D4-S.

The GR series replaces the previous MZ V6, JZ I6 and in the case of light trucks the VZ V6.

Note: Power ratings have changed due to SAE measurement changes for 2006 model year vehicles. Toyota rates engines on 87 octane, Lexus rates engines on 91 octane

Contents

1GR-FE

1GR-FE 4.0 L V6 from a 2007 Toyota FJ Cruiser

The 1GR-FE is the 4.0 L version. Bore is 94 mm and stroke is 95 mm. Output is 236 hp (176 kW) at 5200 rpm with 266 lb·ft (361 N·m) of torque at 4000 rpm on 87 octane, and 239 hp (178 kW) at 5200 rpm with 278 lb·ft (377 N·m) at 3700 rpm on 91 octane. This engine features Toyota's VVT-i, variable valve timing system on the intake cam and a compression ratio of 10.0:1. An updated version of this engine features Dual VVT-i, increasing output to 258 hp (192 kW) and 270 lb·ft (366 N·m) on 87 octane and 270 hp (201 kW) and 278 lb·ft (377 N·m) on 91 octane. Inside, the 1GR uses a taper-squish combustion chamber design with matching pistons to improve anti-knocking and engine performance, while also improving intake and fuel efficiency. Toyota adopted a siamese-type intake port, which reduces the surface area of the port walls and prevents fuel from adhering to such walls. This engine has special cast-iron cylinder liners cast into the block, which are a spiny type to improve adhesion between the liner and cylinder block. With these special thin liners it is impossible to bore the block. In the event of cylinder wall damage (scoring, deep protrusions, etc), the entire cylinder block must be replaced. For increased block rigidity, the 1GR also receives a high temperature plastic insulator/protector, which fills the empty space between the outer portion of the cylinders and block material common to open deck engines. For increased cooling efficiency, the 1GR employs water passages between the bores of the engine. There are two such passages for each bank for a total of four. This reduces cylinder hot-spotting and keeps combustion chamber temperatures more uniform.

A bolt-on TRD supercharger kit is available on Tacoma, and FJ Cruiser

Applications:

Added Dual VVT-i.

Applications:

2GR

2GR-FE

2GR-FE engine in the 2008 Lexus RX 350

The 2GR-FE is a 3.5 L (3456 cc) version. Bore remains at 94 mm but stroke is reduced to 83 mm. Reported output varies depending on the vehicle application, but is approximately 268 hp (200 kW) at 6200 rpm with 248 lb·ft (336 N·m) of torque at 4700 rpm on 87 octane (R+M/2). This version features Toyota's Dual VVT-i, variable valve timing on both the intake and exhaust cams. Valves are driven by roller-follower rocker arms with low friction roller bearings, and a unique, concave cam lobe design to increase valve lift over the traditional shimless lifter type system of the 1GR-FE. This increases overall cylinder head height to accommodate the slightly taller roller rocker system. Moreover, the cylinder head is segmented into 3 parts: valve cover, camshaft sub-assembly housing, and cylinder head sub-assembly. As such, this valvetrain is used across all other GR engines with Dual VVT-i. Its service weight is 163 kg.

Applications:

2GR-FZE

Eaton Roots-type Twin-Vortices supercharger

2GR-FSE

2GR-FSE engine in the 2008 Crown

The 2GR-FSE engine used in the Lexus IS 350 incorporates Toyota's latest D4-S twin injection fuel system. This system combines direct injection with traditional port injection. Using direct injection and port injection simultaneously facilitates more precise mixing of air and fuel under low and medium load conditions for greater efficiency, while high load conditions dictate the use of direct injection alone for maximum power. The 2GR-FSE engine is rated at 315 PS (232 kW; 311 hp) at 6,400 RPM and 38.4 kg·m (377 N·m; 278 ft·lbf) at 4,800 RPM. The engine's service weight is 174 kg.

The 2GR-FSE was on the Ward's 10 Best Engines list for 2006, 2007, 2008 and 2009.[1][2][3][4]

Applications：

Supercharged

  • 2007 Toyota Mark X Supercharged (265 KW, 355 hp)[5]

2GR-FXE

Atkinson cycle, VVT-i, uses cooled EGR system, 245 hp

3GR

3GR-FE

3GR-FE engine in the 2007 IS 300

The 3GR-FE is a 3.0 L (2994 cc) version with Dual VVT-i. Bore is 87.5 mm while stroke is shared with the 2GR at 83 mm, with a compression ratio of 10.5:1. Output is 170 kW (228 hp) at 6,400 RPM, and 300 N·m (221 ft·lbf) at 4,800 RPM.

Applications:

3GR-FSE

The 3GR-FSE adds D4 direct injection. The 3GR-FSE engine is rated at 256 PS (188 kW; 252 hp) at 6,200 RPM and 32 kg·m (314 N·m; 231 ft·lbf) at 3,600 RPM.

Applications:

4GR-FSE

2004 Toyota 4GR-FSE engine.

The 4GR-FSE is a 2.5 L (2499 cc) version. Bore is 83.1 mm while stroke is reduced to 76.9 mm. Output is 215 PS (158 kW; 212 hp) at 6,400 RPM and 26.5 kg·m (260 N·m; 192 ft·lbf) at 3,800 RPM. This version also features Dual VVT-i, variable valve timing on both the intake and exhaust cams and an improved D4-S direct injection system.

Applications:

5GR-FE

The 5GR-FE is a 2.5 L (2497 cc) version. Bore is 87.5 mm while stroke is 69.2 mm with a compression ratio of 10.0:1. Output is 145 kW (194 hp) at 6,200 RPM and 24.7 kg·m (242 N·m; 179 ft·lbf) at 4,400 RPM. This version does not include direct injection, but does include Dual VVT-i. The 5GR-FE engine is only built in China for vehicles for the Chinese market. Using the same bore as the 3GR-FE which is also built in China it can be built on the same production line, thus reducing production cost.

Applications:

See also

Search Wikimedia Commons Wikimedia Commons has media related to: Toyota GR engines

References

  1. ^ "Ward's Announces 2009 10 Best Engines Winners". Ward's AutoWorld. WardsAuto.com. 2008-12-05. http://wardsauto.com/reports/2009/tenbest/best_engines_2009_081205/. Retrieved 2009-07-25. 
  2. ^ "Ward's 10 Best Engines Winners Reflect Fuel-Economy Focus (2008)". Ward's AutoWorld. WardsAuto.com. 2007-12-13. http://wardsauto.com/home/best_engines_focus/. Retrieved 2009-07-25. 
  3. ^ "Ward's Announces 10 Best Engines Winners for 2007". Ward's AutoWorld. WardsAuto.com. 2006-12-05. http://wardsauto.com/home/best_engines_winners/. Retrieved 2009-07-25. 
  4. ^ "Ward's 10 Best Engines for 2006". Ward's AutoWorld. WardsAuto.com. 2006-01-04. http://wardsauto.com/reports/2006/tenbest/. Retrieved 2009-07-25. 
  5. ^ http://toyota.jp/customize/markx/supercharger/index.html

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