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Isuzu has used both its own engines and General Motors-built engines. It has also developed engines for General Motors, Renault, Saab, Honda, Nissan, Opel and Mazda.

Overview

Isuzu engines carry a two-character prefix which designate the number of cylinders and engine family. Engines available currently include the following:

Two-cylinder

Diesel

Three-cylinder

Diesel

A Engines

L Engines

Four-cylinder

Petrol

GH engine

Isuzu's first petrol engines were license built Hillman units for the locally assembled Minx, from 1953. Called the GH10 it has a bore of 65 mm (2.56 in) and a stroke of 95 mm (3.74 in) for a displacement of 1,260 cc (76.9 cu in). Power is 37.5 PS (28 kW). In 1955 this was updated to the GH12, a square design with a 76.2 mm bore and stroke for a displacement of 1,390 cc (84.8 cu in). This was upgraded in 1956 for more power, 46 PS (34 kW) rather than the original's 43 PS (32 kW), and was renamed GH100. In 1958, power increased yet again, to 50 PS (37 kW).

GL engine

For 1959 Isuzu developed their own square design (78 mm or 3.07 in) called the GL150, Isuzu's first own petrol engine. Still showing unmistakable Hillman origins it displaces 1,491 cc (91.0 cu in) and has 60 PS (44 kW). The GL150 was fitted to the 1959 Isuzu Elf and the 1961 Bellel.

General Motors

• The Isuzu Hombre used a General Motors-built Vortec 2200 Engine with 118 hp (86 kW) and 140 ft·lb (190 N·m) of torque.
• 2004–2006 Isuzu i-Series used a General Motors-built Vortec 2800 Engine with 175 hp (130 kW) and 185 ft·lb (251 N·m) of torque.
• 2007–2008 Isuzu i-Series use a General Motors-built Vortec 2900 Engine with 185 hp (138 kW) and 195 ft·lb (263 N·m) of torque.

Isuzu G engine

Isuzu X engine

Isuzu Z engine

Diesel

Isuzu B engine

Isuzu considered the B engine their "small" truck engine. Initially designed in 1969 as a 3.6-liter four cylinder or a 5.4-liter six-cylinder direct injection unit, other displacements were added later on. In 1980 a 3.3-liter version appeared.

Isuzu C engine

Isuzu's C-series engine was a mainstay for their light truck production, as well as for industrial and marine uses. The engine was introduced in 1959; by 1985 over 2 million units had been produced. It was replaced in 1985 by the larger J-series engine.

Isuzu DL engine

Isuzu E engine

This family of engines started as the swirl chamber design, later modified into direct injection (4EE1), final improvement into a 16-valve direct common rail injection (4EE2).

Isuzu F engine

Isuzu H engine

All engines are SOHC with direct injection and are normally aspirated (N/A) or turbocharged (T) or turbocharged and intercooled (T/I)

Three bores: 110 mm (4.3 in), 112 mm (4.4 in), 115 mm (4.5 in)

Four strokes: 110 mm (4.3 in), 115 mm (4.5 in), 120 mm (4.7 in), 125 mm (4.9 in)

4HL1 versions have common rail high-pressure fuel injection system with electronic control system (= CR-ECS)

Isuzu J engine

The J-series direct injection diesel engine was introduced in 1985, in 2.5 or 2.8 liter displacements. Initially installed only in lighter duty versions of the Isuzu Elf, it soon found its way into other Isuzu products. It replaced the somewhat smaller C engine; later on 3.1- and 3.0-liter versions were also introduced - still with four cylinders in line.

Isuzu RZ Engine

• The RZ4E-TC is a 1.9L direct injection diesel powered, turbo intercooled engine which replaced the 4JK1-TCX found in Isuzu D-Max and Isuzu MU-X. The new engine's displacement is 1898cc, 601cc less than the 4JK1-TCX. In addition, the RZ4E-TC generates 150 hp at 3600rpm and 258 lb.-ft. (340Nm) of torque between 1800rpm to 2600rpm, giving it 16 hp and 22 lb.-ft. more than 4JK1-TCX. Isuzu has claimed that RZ4E-TC will have 19% better fuel efficiency compared to its predecessor. Bore is 80.0 mm and stroke is 94.4 mm.

• The RZ4F-TC is a 2.2L direct injection diesel powered, turbo intercooled engine which replaced the RZ4E-TC found in Isuzu D-Max and Isuzu MU-X (only in Thailand by model year 2025). The new engine's displacement is 2164cc, 175cc more than the RZ4E-TC. In addition, the RZ4F-TC generates 163 hp at 3600rpm and 295 lb.-ft. (400 Nm) of torque between 1800rpm to 2600rpm, giving it 13 hp and 37 lb.-ft. more than RZ4E-TC. Isuzu has claimed that RZ4F-TC will have 10% better fuel efficiency compared to its predecessor. Bore is 83 mm and stroke is 100 mm.

CNG

CNG Engines

Isuzu developed the first Compressed Natural Gas (CNG) engine series with low-emissions truck mounted with a clean CNG engine emitting zero black smoke.

• The 4HF1-CNG is a CNG engine of 4.334 L capacity (as based on direct injection diesel engine) with non-contact ignition system. Peak torque is 323 Nm, peak power is 120 PS (88 kW) at 1,500 rpm. Bore is 115 mm, stroke is 108 mm.
• The 4HV1 is a CNG engine of 4.570 L capacity with non-contact ignition system. Peak torque is 353 Nm, peak power is 170 PS (125 kW) at 3200 rpm. Bore is 115 mm, stroke is 110 mm. Application used for NPR300 CNG series.

Five-cylinder

Gasoline

The Isuzu i-Series uses General Motors-built inline five-cylinder engines.

• 2004–2006 used the General Motors-built Vortec 3500 Engine with 220 hp (164 kW) and 225 ft·lb (305 N·m) of torque.
• 2007–2008 used the General Motors-built Vortec 3700 Engine with 242 hp (180 kW) and 242 ft·lb (327 N·m) of torque.

Six-cylinder

Gasoline

General Motors

• From 1989 to 1990 the 2.8 L (2,838 cc) LL2 V6 with single point fuel injection, producing 122 hp (91 kW) and 204 N⋅m (150 lb⋅ft) of torque was used in the first generation Trooper.
• From 1990 to 1992 the 3.1 L (3,128 cc) LG6 V6 engine with 122 hp (91 kW) and 224 N⋅m (165 lb⋅ft) was used in the Isuzu Rodeo until replaced with the Isuzu-built 3.2L 6VD1 engine.
• 2002–2009 SUV use the General Motors-built Atlas 4200 Engine with 275 hp (205 kW) and 275 ft·lbf (373 N·m) of torque. For the 2007 model year, the GMT360 platform received an increase to 291 hp (217 kW) and 277 ft·lb (376 N·m) of torque.
• The 1996–2000 Isuzu Hombre used the General Motors-built Vortec 4300 Engine with 180 hp (134 kW) and 245 ft·lb (332 N·m) of torque.

Isuzu V engine

The Isuzu V engine is a family of all-aluminum 75° V6 gasoline engines ranging from 3.2 to 3.5 liters.

Diesel

Eight-cylinder

Gasoline

• 2001–2009 Isuzu SUV's use the General Motors-built Vortec 5300 Engine with 285 hp (213 kW) and 325 ft·lb (441 N·m) of torque.
• Isuzu Commercial trucks use the General Motors-built Vortec 6000 Engine with 300 hp (224 kW) and 360 ft·lb (488 N·m) of torque.

Diesel

• The 8PA1 is a 10.0 L (9,971 cc) V8 diesel truck engine. It has 215 PS (158 kW) at 2800 rpm and 62.0 kg⋅m (608 N⋅m; 448 lb⋅ft) at 1600 rpm.
• Isuzu co-designed and built some of the Duramax V8 engine along with General Motors from 2001-2010.

Twelve-cylinder

Gasoline

Diesel

References

1. "C-Series". Isuzu Engines. Retrieved 22 April 2022.
2. "L-Series". Isuzu Engines. Retrieved 22 April 2022.
3. "J-Series". Isuzu Engines. Retrieved 22 April 2022.
4. "B-Series". Isuzu Engines. Retrieved 22 April 2022.
5. "Alternative Fuel (a natural progression)" (PDF). Isuzu Engines. Retrieved 22 April 2022.
6. "H-Series". Isuzu Engines. Retrieved 22 April 2022.
7. "U-Series". Isuzu Engines. Retrieved 22 April 2022.
8. "W-Series". Isuzu Engines. Retrieved 22 April 2022.
9. ^ 2AA1–3AA1, 2AB1–3AB1 Workshop Manual, p. 4-2-1
10. Industrial Diesel Engines: 2AA1–3AA1, 2AB1–3AB1 (Workshop Manual), Isuzu Motors Limited, December 1983, p. 1, 809-06-200K
11. 2AA1–3AA1, 2AB1–3AB1 Workshop Manual, p. 1-2
12. 2AA1–3AA1, 2AB1–3AB1 Workshop Manual, p. 1-3
13. 2AA1–3AA1, 2AB1–3AB1 Workshop Manual, p. 1-4
14. "Isuzu 3LB1 - Isuzu 3LD1 - Isuzu 3LD2 - 3LB1 - 3LD1 - 3LD2 - Engine model - Engine characteristics - Valvetrain - Overhead valve - 4 Cycle - Water cooled - Vertical In-line - 3 Cylinders - Injection - Output | DET Isuzu". Archived from the original on 2018-02-06. Retrieved 2018-02-05.
15. ^ Ozeki, Kazuo (2007). 日本のトラック・バス 1918~1972 [Japanese Trucks and Buses 1918-1972] (in Japanese). Tokyo: Miki Press. p. 54. ISBN 978-4-89522-494-9.
16. ものづくりの歴史 いすゞ自動車株式会社 [Manufacturing history of Isuzu Motors]. Isuzu Recruiting Information (in Japanese). Isuzu Motors. Archived from the original on 2014-01-08. Retrieved 2014-01-08.
17. ^ Ishikawa, Kenji (2012-05-01), "トラックメーカーアーカイブ: いすゞ自動車のすべて ", Camion (in Japanese), Tokyo, Japan: Geibun Mooks, p. 86, ISBN 978-4-86396-183-8
18. Mastrostefano, Raffaele, ed. (1985). Quattroruote: Tutte le Auto del Mondo 1985 (in Italian). Milano: Editoriale Domus S.p.A. p. 175. ISBN 978-88-7212-012-5.
19. Isuzu: Piazza, 117 Coupé, Bellett GT (in Japanese), Tokyo: Neko Publishing, 1991, p. 63, ISBN 978-4-87366-026-4
20. Meyer, Donald E. (March 2009), "The first century of GMC truck history" (PDF), GM Heritage Center, General Motors, p. 37
21. "自動車ガイドブック: Japanese motor vehicles guide book 1973/1974" (in Japanese). 20. Japan: Japan Automobile Manufacturers Association. 1973-10-30: 277. {{cite journal}}: Cite journal requires |journal= (help)
22. Mastrostefano, Raffaele, ed. (1990). Quattroruote: Tutte le Auto del Mondo 1990 (in Italian). Milano: Editoriale Domus S.p.A. p. 388.
23. Tutte le Auto del Mondo 1990, pp. 389-390
24. Büschi, Hans-Ulrich, ed. (5 March 1992). Automobil Revue 1992 (in German and French). Vol. 87. Berne, Switzerland: Hallwag AG. p. 318. ISBN 978-3-444-00539-8.
25. "Retro Review: '91 Isuzu Stylus XS", MotorWeek, retrieved 2021-03-12
26. ^ Automobil Revue 1992, p. 319
27. Flammang, James M. (1994). Standard Catalog of Imported Cars, 1946–1990. Iola, WI: Krause Publications, Inc. p. 309. ISBN 978-0-87341-158-5.
28. ^ Takeuchi, Koichi; Kubota, Kimi; Konagai, Masao; Watanabe, Mitsuo; Kihara, Ryoji (1985). "The New Isuzu 2.5 Liter and 2.8 Liter 4-Cylinder Direct Injection Diesel Engine". SAE Transactions. 94 (2): 434–452. ISSN 0096-736X. JSTOR 44467592.
29. Quattroruote Speciale: Tutte le Auto del Mondo 1967 (in Italian). Milano: Editoriale Domus S.p.A. February 1967. p. 151.
30. "1979 Isuzu 117 XD Coupé technical specifications". Carfolio.com. 2008-04-03.
31. ^ Flammang, p. 308
32. Büschi, Hans-Ulrich, ed. (March 1991). Automobil Revue 1991 (in German and French). Vol. 86. Berne, Switzerland: Hallwag AG. pp. 457, 459. ISBN 978-3-444-00514-5.
33. Automobil Revue 1991, p. 462
34. Automobil Revue 1991, p. 332
35. 4EE2 parts
36. ^ 4EE2 development history
37. ^ World Cars 1984. Pelham, NY: L'Editrice dell'Automobile LEA/Herald Books. 1984. p. 345. ISBN 978-0-910714-16-7.
38. "Archived copy" (PDF). Archived from the original (PDF) on 2013-02-08. Retrieved 2013-02-18.{{cite web}}: CS1 maint: archived copy as title (link)
39. Rodeo 4WD: ยอดรถสำหรับยอดดน [Top Car for Top People] (catalog) (in Thai), บริษัท ตรีเพชรอีซูซุเซลส์ จำกัด , April 1992, pp. 3–4
40. Pornelos, Vince (2019-11-13). "With Euro4 4JA1 in 2020 Traviz, could Isuzu revive Crosswind?". Autoindustriya.com.
41. "Isuzu TRAVIZ | Isuzu Philippines". www.isuzuphil.com. Archived from the original on 2020-07-15.
42. "Isuzu Traga Euro 4 | Isuzu Indonesia". isuzu-astra.com. Archived from the original on 2024-06-11.
43. Mastrostefano, Raffaele, ed. (1990). Quattroruote: Tutte le Auto del Mondo 1990 (in Italian). Milano: Editoriale Domus S.p.A. p. 1252.
44. Automobil Revue 1991, p. 334
45. Büschi, Hans-Ulrich, ed. (10 March 1994). Automobil Revue 1994 (in German and French). Vol. 89. Berne, Switzerland: Hallwag AG. p. 316. ISBN 978-3-444-00584-8.
46. 自動車ガイドブック [Automobile Guide Book 1976/1977] (in Japanese), vol. 23, Japan: Japan Automobile Manufacturers Association, 1976-10-20, p. 291, 0053-760023-3400
47. Automobile Guide Book 1976/1977, p. 279
48. "Isuzu's V12 monster".

External links

• Official Website -Isuzu Commercial Vehicles

• Isuzu
• Lists of automobile engines