Suzuki G engine

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
Suzuki G engine
Motor Suzuki G10A.JPG
G10A engine in a SF310 Swift
  • 1.0 L; 60.6 cu in (993 cc)
  • 1.2 L; 73.0 cu in (1,196 cc)
  • 1.3 L; 79.2 cu in (1,298 cc)
  • 1.3 L; 80.8 cu in (1,324 cc)
  • 1.4 L; 83.0 cu in (1,360 cc)
  • 1.5 L; 91.1 cu in (1,493 cc)
  • 1.6 L; 97.0 cu in (1,590 cc)
Cylinder bore
  • 71 mm (2.8 in)
  • 72 mm (2.83 in)
  • 74 mm (2.91 in)
  • 75 mm (2.95 in)
Piston stroke
  • 61 mm (2.4 in)
  • 75 mm (2.95 in) (Indonesia)
  • 75.5 mm (2.97 in)
  • 77 mm (3.03 in)
  • 84.5 mm (3.33 in)
  • 90 mm (3.54 in)
Block materialAluminum
Head materialAluminum
ValvetrainSOHC 2 or 4 valves per cylinder
DOHC 4 valves per cylinder (G13B/K)
Timing drive systemTiming belt
Compression ratioFrom 8.3:1 to 11.5:1
RPM range
Redline6500-8600 rpm
TurbochargerIn G10T only
Fuel systemCarburetor
Multi-port fuel injection (Model Dependent)
Fuel typeGasoline
Oil systemWet sump
Cooling systemWater-cooled
Power output48–116 hp (36–87 kW; 49–118 PS) at 5,100 rpm up to 7,600 rpm
Specific power48.3 hp (36.0 kW; 49.0 PS)-87.1 hp (65.0 kW; 88.3 PS) per litre
Torque output77–146 N⋅m (57–108 lb⋅ft) at 3,200 rpm up to 4,500 rpm

The Suzuki G engine is a series of three- and four-cylinder internal combustion engines manufactured by Suzuki Motor Corporation for various automobiles, primarily based on the GM M platform, as well as many small trucks such as the Suzuki Samurai and Suzuki Vitara and their derivatives.


G10/G10 Turbo[edit]

The G10 (sometimes referred to as the "G10A" to set it apart from the later G10B) is a 1.0 L (993 cc) straight-three gasoline four-stroke engine using aluminum alloy for the block, cylinder head and pistons. It is equipped with either a carburetor or electronic fuel injection and was also offered as the G10T with an IHI RHB31/32 turbocharger and either MPFI or a carburetor. It has a single overhead camshaft driving six valves. Cylinder spacing is 84 mm (3.31 in), as for the four-cylinder G13/G15/G16 engines.

A 74 mm × 77 mm (2.91 in × 3.03 in) bore and stroke give the engine a total of 1.0 L; 60.6 cu in (993 cc) of displacement. It produces 48 hp (36 kW; 49 PS) at 5100 rpm and 77 N⋅m (57 lb⋅ft) at 3200 rpm with 9.5:1 compression in the carbureted model, 55 hp (41 kW; 56 PS) at 5700 rpm and 79 N⋅m (58 lb⋅ft) at 3300 rpm in the fuel-injected model. The original home market version originally offered a carbureted 60 PS (44 kW; 59 hp) JIS at 5500 rpm, later power output fluctuated around 52–55 PS (38–40 kW; 51–54 hp).

From 1984 to 1988 the standard G10 engine used a hemispherical head carbureted design with mechanical lifters. From 1989 to 2001 the engine received updates in the form of throttle-body fuel injection and hydraulic lifters. A detuned 49 hp (37 kW; 50 PS) unit, with a slightly different camshaft, two-ring pistons and differently tuned engine control unit, was used in the ultra-fuel-efficient Geo Metro XFi model, which delivered as much as 58 mpg‑US (4.1 L/100 km; 70 mpg‑imp). In the US, the G10 in the 2000 Chevrolet Metro became the last engine available on an American-sold vehicle to use throttle body injection for fuel delivery.

Through the 1985-1991 model years a turbocharged MPFI version of the G10 was offered in some markets. This engine delivered 70 hp (52 kW; 71 PS) at 5500 rpm and 79 lb⋅ft (107 N⋅m) at 3500 rpm. This turbocharged engine, with mechanical lifters, was available in both the US and Canadian Firefly/Sprint/Forsa from 1987-88. Only the Canadian Firefly/Sprint had this option, with hydraulic lifters, in the 1989-1991 model years. In the Japanese domestic market, the car was originally carbureted (80 PS (59 kW; 79 hp) JIS at 5500 rpm, 118 N⋅m (87 lb⋅ft) at 3500 rpm) and went on sale in June 1984. In October 1987, along with a facelift, the home market Turbo received fuel injection and power output went up to 82 PS (60 kW; 81 hp) JIS, torque to 120 N⋅m (89 lb⋅ft). It was a short-lived version, however, as by September 1988 the car was no longer on sale in the Japanese domestic market. As the only market in the world, Canada did continue to receive this engine for its versions of the second generation Cultus.

Because of the physics of the straight-three engine, the G10 tends not to idle as smoothly as other engines such as a straight-six engine. This engine has a non-interference valvetrain design.


  • 1985–2001 Suzuki Cultus and global nameplate siblings: Chevrolet Sprint, Geo/Chevrolet Metro, Pontiac Firefly, Suzuki Swift, Suzuki Forsa
  • November 1984– Suzuki Cultus AA41S AB41S
  • 1988– Suzuki Cultus AA43S AA43V AB43S AA44S AB44S

Ultralight aircraft



The G10B was an all-aluminium engine, a four-cylinder 1.0 L (993 cc) 72 mm × 61 mm (2.83 in × 2.40 in) SOHC 16-valve engine which produces 60 PS (44 kW; 59 hp) at 6000 rpm and 78 N⋅m (58 lb⋅ft) of torque at 4500 rpm. It was sold in both carburetted and MPFI form. It was widely used in motorsport in India due to its lightweight and tunability. The mounting points of the engine block were similar to that of the G13 and so an engine swap was a relatively easy task. It was phased out when production of Zen ceased in 2006. It was made only in India but was sold in all countries the Zen was sold. But the Zen which was sold as Suzuki Alto 1.0 in Europe came with a detuned G10B 8-valve engine which produces 54 PS (40 kW; 53 hp) at 5500 rpm and 77 N⋅m (57 lb⋅ft) of torque at 4500 rpm.The engine head & above spares are exactly idential to the Zen Carburettor sold in India from 1993 to 1999.


The G12B is an inline-four engine using aluminum alloy for the block, cylinder head and pistons. It is derived from the G13BB engine by reducing the bore to 71 mm (2.80 in) to displace 1.2 L (1,196 cc). Stroke remains the same at 75.5 mm (2.97 in). It has a SOHC 16V head and the fuel delivery is by multi-point fuel injection. It is BS6 (equal to early Euro 6) emissions compliant. It has lighter pistons and other detail improvements to be a more fuel efficient engine than the G13BB on which it is based. Maruti modified the engine to displace less than 1200 cc to take advantage of the reduced excise duty on such vehicles in India. It produces 73 PS (54 kW; 72 hp) at 6000 rpm and 98 N⋅m (72 lb⋅ft) at 3000 rpm for petrol variant and 65 PS (48 kW; 64 hp) at 6000 rpm and 85 N⋅m (63 lb⋅ft) at 3000 rpm for CNG variant.

G13 series[edit]

The G13 is an inline-four engine using aluminum alloy for the block, cylinder head and pistons. Displacing 1.3 L (1,324 cc) for the G13A and 1.3 L; 79.2 cu in (1,298 cc) for all other G13 engines, fuel delivery is either through a carburetor, throttle body fuel injection or multi-point fuel injection.

This engine was made with different valvetrain designs: 8 or 16 valve SOHC or 16 valve DOHC. All G13 engines have a bore and a stroke size of 74 mm × 75.5 mm (2.91 in × 2.97 in) except for the G13A engine which has a 77 mm (3.03 in) stroke. There was also a 1,360 cc (1.4 L; 83 cu in) "G13C variant built in Indonesia, combining the longer stroke with a 75 mm (2.95 in) bore.


The 1324 cc SOHC 8-valve G13A has a non-interference valvetrain design. Horsepower ranges from 60-70 PS with 90-100 N.m of torque.

  • Bore x Stroke: 74mm x 77mm
  • Compression Ratio: 8.9:1
  • Cylinder Block Deck Height: 186.8mm
  • Cylinder Head Volume: 32.2cc
  • Head Gasket Thickness (compressed): 1.2mm
  • Intake Valve O.D. 36mm
  • Exhaust Valve O.D. 30mm
  • It was used in the following vehicles:


This 1298 cc DOHC 16-valve engine with bore and stroke of 74mm x 75.5mm (2.91 in x 2.97 in). It uses the older distributor driven off the intake camshaft, and produces approximately 75–101 hp (56–75 kW; 76–102 PS) at 6500 rpm / 109–112 N⋅m (80–83 lb⋅ft) at 5000 rpm. Redline is set at 7400–7600 rpm. The compression ratio is between 10.0–11.5:1. This engine has an interference valvetrain design, making periodic timing belt changes vital to the engine's life. It was used in the following vehicles:


The SOHC 8-valve G13BA with carburettor or single-point fuel injection and produces 68–73 PS (50–54 kW; 67–72 hp) and 100–103 N⋅m (74–76 lb⋅ft) of torque. It has 9.5:1 compression ratio and also a non-interference valvetrain design. 1995 to 1997 U.S. and Canadian-market engines gained hydraulic lash adjusters. It was used in the following vehicles:


The SOHC 16-valve G13BB (introduced in March 1995) has electronic multi-point fuel injection (MPFI), generating 56–63 kW (76–86 PS; 75–84 hp) and 104–115 N⋅m (11–12 kg⋅m; 77–85 lb⋅ft).[5] The G13BB uses a wasted spark arrangement of two coils bolted directly to the valve cover. This engine uses a MAP sensor to monitor manifold pressure, similar to the G16B series. This engine has a non-interference valvetrain design. It uses the same G series block found in many other Suzuki models and so it is a popular conversion into the Suzuki Sierra/Samurai, which uses either a G13A (85-88) or G13BA (88.5-98). This allows the engine to fit into the engine bay simply as engine and gearbox mounts are identical and both engines are mounted North-South. It was used in the following vehicles:


The G13C was bored out by one millimeter, for a bore and stroke of 75.0 mm × 77.0 mm (2.95 in × 3.03 in) and a displacement of 1,360 cc (1.4 L; 83 cu in). Maximum power was listed at 73 PS (54 kW; 72 hp) at 6000 rpm in 1999.[6] This engine was developed by Suzuki's Indonesian subsidiary and also available for Malaysian market Suzuki Futura 1400.[7] It was first used in the 1991 Suzuki Carry Futura.[8] It was used in the following vehicles:


"G13K" is the JDM version of G13B. It has different cams, intake and exhaust manifolds and ECU with cutoff at 8600rpm. It makes 115 hp. It was used in the Japanese version of Swift GTi called Cultus GT-i, replacing the first generation Swift GTi.


This engine is a 1.5 L (1,493 cc) 16-valve SOHC engine configuration, generating between 78–105 PS (57–77 kW; 77–104 hp) at 5500–6500 rpm and 120–128 N⋅m (89–94 lb⋅ft) at 3000–4000 rpm. It has a 75 mm (2.95 in) bore in conjunction with an 84.5 mm (3.33 in) stroke. Applications:


The G16 is an inline-four engine displacing 1.6 L (1,590 cc). It shares the G15A's 75 mm (2.95 in) bore, in a long block with a 90 mm (3.54 in) stroke.[9]


Either 8-valve SOHC carb or EPI before 1990 or 16-valve SOHC EPI after 1990.[10] The 16-valve G16A mainly used in Japan and some selected markets. Applications:


The SOHC G16B was the 16-valve version of G16A for worldwide market. The Suzuki G16B engine features an aluminum cylinder block with wet liners and aluminum cylinder head, cylinder bore and piston stroke are 75.0 mm (2.95 in) and 90.0 mm (3.54 in), respectively. Compression ratio rating is 9.5:1. The G16B engine is equipped with Multi-point fuel injection (MPFI) and uses a wasted spark arrangement of two coils bolted directly to the valve cover. This engine produced 94–97 PS (93–96 hp; 69–71 kW) at 5,600 rpm of and 132–140 N⋅m (97–103 lb⋅ft) at 4,000 rpm.[11] Used in the following vehicles:

See also[edit]


  1. ^ Ansari, Usman (2 February 2017). "17 Years of Suzuki Cultus in Pakistan". Car Spirit PK.
  2. ^ "Suzuki Margalla GL Specifications". Pakwheels.
  3. ^ Spoelstra, Marcel. "Suzuki RS Prototypes". Retrieved 23 July 2020.
  4. ^ "History Of The Suzuki Sidekick 1989-1998". Zuki Offroad.
  5. ^ "PKW Suzuki" (PDF). Victor Reinz. p. 1332 (p. 4 of pdf). Archived from the original (PDF) on 2011-07-19. Retrieved 2011-01-19.
  6. ^ Suzuki Carry 1.3 Grand Real Van (brochure) (in Indonesian), PT Indomobil Niaga International, 1999, p. 4
  7. ^ Schaefers, Martin. "Japanese Kei Minivans". Far East Auto Literature.
  8. ^ Suzuki SL413 Service Manual (in Indonesian), Jakarta, Indonesia: PT. Indomobil Suzuki International Service Department, November 1993, p. 6A-51, 4 B/SM/SERV - R4/93V
  9. ^ Åhman, Michael, ed. (1991), BilKatalogen 1992 (Swedish edition of German Auto Katalog) (in Swedish), Borlänge, Sweden: Bilkatalogen AB, p. 260
  10. ^ Büschi, Hans-Ulrich, ed. (5 March 1992). Automobil Revue 1992 (in German and French). Vol. 87. Berne, Switzerland: Hallwag AG. p. 537. ISBN 3-444-00539-3.
  11. ^ "Suzuki G16B (1.6 L, SOHC 16V) engine: Review and specs, service data". 24 July 2019.