Toyota GR engine
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| Toyota GR engine | |
|---|---|
| Manufacturer | Toyota Motor Corporation |
| Production: | 2002– |
| Predecessor: | Toyota MZ engine |
| Similar: | Chrysler SOHC V6 Ford Cyclone GM HFV6 Honda J-series Nissan VQ |
The Toyota GR engine family is an open-deck, die-cast V6 piston engine series. The GR series has a 60° aluminum block and aluminum DOHC cylinder heads. Some versions use MFI fuel injection, some have direct gasoline injection, and some have a combination of direct injection and MFI. This engine series also has 4 valves per cylinder, features forged steel connecting rods, one-piece cast camshafts, and a cast aluminum lower intake manifold.
Note: Horsepower ratings have changed due to SAE measurement changes.
Contents |
[edit] 1GR-FE
The 1GR-FE is the 4.0L version. Bore is 94 mm and stroke is 95 mm. Output is 236 hp (183 kW) at 5200 rpm with 266 lb-ft (382 Nm) of torque at 4000 rpm on 87 octane, and 239 hp at 5200 rpm with 278 lb-ft at 3700 rpm on 91 octane. This engine features Toyota's single VVT-i, variable valve timing, system and a compression ratio of 10.0:1. 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 such 2 passages for each bank for a total of 4. This reduces cylinder hot-spotting and keeps combustion chamber temperatures more uniform.
Applications:
- 2003 Toyota 4Runner
- 2003 Toyota Land Cruiser (Europe)
- 2005 Toyota Tacoma
- 2005 Toyota Tundra
- 2005 Toyota Fortuner (Middle East)
- 2007 Toyota FJ Cruiser
- 2007 Toyota Tacoma
[edit] 2GR-FE
The 2GR-FE is a 3.5 L (3456 cc) version. Bore remains at 94 mm but stroke is reduced to 83 mm. Output is 268 hp (200 kW) at 6200 rpm with 248 ft.lbf (336 Nm) of torque at 4700 rpm on 87 octane, while 91 octane provides a small boost in performance of 4 hp to 272 and 6 lb-ft to 254. 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 accomodate 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.
Applications:
- 2005 Toyota Avalon
- 2006 Toyota Aurion
- 2006 Toyota RAV4 V6
- 2006 Toyota Estima V6
- 2007 Toyota Previa V6
- 2007 Toyota Tarago V6
- 2007 Toyota Camry V6
- 2007 Toyota Sienna
- 2007 Lexus ES 350
- 2007 Lexus RX 350
- 2008 Toyota Kluger
- 2008 Toyota Highlander
[edit] 2GR-FSE
The 2GR-FSE engine used in the 2006 Lexus IS 350 incorporates Toyota's D4-S twin injection system. This system combines gasoline 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 hp (232 kW) at 6400 rpm and 377 N·m (277 ft·lbf) at 4800 rpm. The 2GR-FSE has also been slated for possible use in the upcoming 2008 Toyota Supra (which is speculated to be released October 2007) but tuned to the output of 350 hp (261 kW) at 7000 rpm and 290 ft·lbf (393 N·m) at 5000 rpm.
The 2GR-FSE was on the Ward's 10 Best Engines list for 2006 and 2007.
Applications：
- 2006 Toyota Crown Athlete (Japan)
- 2006 Lexus GS 350 (Japan)
- 2006 Lexus GS 450h
- 2006 Lexus IS 350 (Japan and United States)
[edit] 3GR-FE
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. Output is 228 hp (170 kW) @ 6400 rpm, and 221 lb/ft (300 N·m.) of torque @ 4800 rpm.
Applications:
- 2003 Toyota Crown (Asia-Pacific ex.Japan)
- 2005 Lexus GS 300 (Middle East, Asia-Pacific ex.Japan)
- 2007 Lexus IS 300 (Middle East, Asia-Pacific ex.Japan)
[edit] 3GR-FSE
The 3GR-FSE used in the 2006 Toyota Mark X adds gasoline direct injection (its name is "D-4") engine. The 3GR-FSE engine rated at 256 hp (188 kW) at 6,200 RPM and 314 Nm at 3600 rpm.
Applications:
- 2005 Toyota Mark X(Japan)
- 2005 Toyota Crown Royal(Japan)
- 2006 Lexus GS 300 (United States and Europe)
[edit] 4GR-FSE
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 204 hp at 6400 rpm with 265Nm of torque at 4800 rpm. This version also features "dual-VVT-i", variable valve timing on both the intake and exhaust cams and gasoline direct injection.
Applications:
- 2006 Lexus IS 250
- 2006 Toyota Crown Royal (Japan)
- 2006 Toyota Mark X(Japan)
