The Suzuki M13A is a 1.3 L (1,328 cc, 81.0 cu·in) straight-four 4-stroke natural aspirated gasoline engine from the Suzuki M-family. The M13A engine was manufactured by Suzuki Motor Corporation.
The Suzuki M13A engine features an aluminum cylinder block with wet liners and aluminum cylinder head with two overhead camshafts (DOHC) and four valves per cylinder (16 in total). It has a 78.0 mm (3.07 in) cylinder bore and 69.5 mm (2.74 in) piston stroke. Compression ratio rating is 9.5:1.
The M13A engine is equipped with Multi-point fuel injection (MPFI), VVT (Variable Valve Timing) system on the intake side, ETCS (Electronic Throttle Control System) and electronic ignition system with one ignition coil for two spark plugs. Modifications without VVT system were available for some markets.
This engine produced from 88 PS (65 kW; 87 HP) at 6,000 rpm to 91 PS (67 kW; 90 HP) at 6,000 rpm of maximum horsepower and 118 N·m (12 kg·m, 87 ft·lb) at 3,400 rpm of peak torque.
The breakdown of the engine code is as follows:
- M – Engine family
- 13 – 1.3 Liter Displacement
General information
| Engine Specifications | |
| Engine code | M13A |
| Layout | Four stroke, Inline-4 (Straight-4) |
| Fuel type | Gasoline (petrol) |
| Production | – |
| Displacement | 1.3 L, 1,328 cm3 (81.0 cu in) |
| Fuel system | Multi-point fuel injection |
| Power adder | None |
| Power output |
From 88 PS (65 kW; 87 HP) at 6,000 rpm to 91 PS (67 kW; 90 HP) at 6,000 rpm |
| Torque output | 118 N·m (12 kg·m, 87 ft·lb) at 3,400 rpm |
| Firing order | 1-3-4-2 |
| Dimensions (L x W x H): | – |
| Weight | – |
Cylinder block
The Suzuki M13A has an aluminum cylinder block with five bearing support system and wet liners. It has a 78.0 mm (3.07 in) cylinder bore and 69.5 mm (2.74 in) piston stroke. The engine has two compression and single oil control ring. Compression ratio rating is 9.5:1.
| Cylinder block (Suzuki Grang Vitara specs) | ||
| Cylinder block alloy | Aluminum | |
| Compression ratio: | 9.5:1 | |
| Cylinder bore: | 78.0 mm (3.07 in) | |
| Piston stroke: | 69.5 mm (2.74 in) | |
| Number of piston rings (compression / oil): | 2 / 1 | |
| Number of main bearings: | 5 | |
| Cylinder inner diameter (standard): | 78.000-78.014 mm (3.0709-3.0714 in) | |
| Piston skirt diameter (standard): | 77.953-77.968 mm (3.069-3.0696 in) | |
| Piston pin outer diameter: | 19.997-20.000 mm (0.7873-0.7874 in) | |
| Piston ring side clearance: | Top | 0.030-0.070 mm (0.0012-0.0028 in) |
| Second | 0.020-0.060 mm (0.0008-0.0024 in) | |
| Oil | 0.030-0.170 mm (0.0012-0.0067 in) | |
| Piston ring end gap: | Top | 0.200-0.350 mm (0.0079-0.0138 in) |
| Second | 0.350-0.450 mm (0.0138-0.0177 in) | |
| Oil | 0.200-0.700 mm (0.0079-0.0276 in) | |
| Crankshaft main journal diameter: | 44.994-45.000 mm (1.7714-1.7717 in) | |
| Crankpin diameter: | 41.982-42.000 mm (1.6528-1.6535 in) | |
Main bearing cap bolts tightening procedure and torque specs:
No.1 bolt (1-10)
- Step 1: 30 Nm; 3.0 kg·m; 22.0 ft·lb
- Step 2: 50 Nm; 5.0 kg·m; 36.5 ft·lb
- Step 3: Turn all bolts 60°
No.2 bolt (11-20)
- Step 1: 25 Nm; 2.5 kg·m; 18.0 ft·lb
After securing bearing cap bolts, make sure crankshaft turns smoothly by hand.
Connecting rod bearing bolts
- Step 1: 15 Nm; 1.5 kg·m; 11 ft·lb
- Step 2: Turn bolts 45°
- Step 3: Turn bolts another 45°
Cylinder head
The cylinder head is made of aluminum alloy which gives it good cooling efficiency. The engine has dual overhead camshaft design with four valves per cylinder. The M13A engine used Variable Valve Timing System (VVT) on the intake camshaft. Intake valves are 37.0 mm (1.4567 in) in diameter, and the exhaust valves are 25.0 mm (0.9843 in). This engine did not have hydraulic lifters, so special valve shims are used to adjust the valve clearance.
| Cylinder head | ||
| Valve Arrangement: | DOHC, chain drive | |
| Valves: | 16 (4 valves per cylinder) | |
| Valve head diameter: | INTAKE | 37.0 mm (1.4567 in) |
| EXHAUST | 25.0 mm (0.9843 in) | |
| Valve length: | INTAKE | 100.70 mm (3.9646 in) |
| EXHAUST | 99.00 mm (3.8976 in) | |
| Valve stem diameter: | INTAKE | 5.465-5.480 mm (0.2152-0.2157 in) |
| EXHAUST | 5.440-5.455 mm (0.2142-0.2148 in) | |
| Valve spring free length: | 36.83 mm (1.45 in) | |
| Camshaft cam height: | INTAKE | 44.929-45.089 mm (1.7689-1.7752 in) |
| EXHAUST | 44.399-44.559 mm (1.748-1.7543 in) | |
| Camshaft journal diameter: | №1 |
Intake: 26.940-26.955 mm (1.0606-1.0612 in) Exhaust: 26.934-26.955 mm (1.0604-1.0612 in) |
| Other journals diameter | 22.934-22.955 mm (0.9029-0.9037 in) | |
Head tightening procedure and torque specs:
For M8 bolts:
- Step 1: 25 Nm (2.5 kg·m, 18.4 ft·lb)
For M10 bolts:
- Step 1: 20 Nm; 2.0 kg·m; 14.5 ft·lb
- Step 2: 40 Nm; 4.0 kg·m; 29.0 ft·lb
- Step 3: Turn all bolts 60°
- Step 4: Turn all bolts another 60°
Maintenance data
| Valve clearance (Cold) | |
| Intake valve | 0.18-0.22 mm (0.0071-0.0087 in) |
| Exhaust valve | 0.28-0.32 mm (0.011-0.0126 in) |
| Valve clearance (Hot) | |
| Intake valve | 0.21-0.27 mm (0.0083-0.0106 in) |
| Exhaust valve | 0.30-0.36 mm (0.0118-0.0142 in) |
| Compression pressure | |
| Standard | 14.0 kg/cm2 / 200 rpm |
| Minimun | 11.0 kg/cm2 / 200 rpm |
| Compression differential limit between cylinders | 1.0 kg/cm2 / 200 rpm |
| Oil system | |
| Oil consumption , L/1000 km (qt. per miles) | up to 0.5 (1 qt. per 1200 miles) |
| Recommended engine oil | 5W-30, 10W-30 |
| Oil type API | SG, SH, SJ, SL or SM |
| Engine oil capacity (Refill capacity) | ~ 3.7-3.9 L |
| Oil change interval, km (miles) | 5,000-10,000 (3,000-6,000) |
| Ignition system | |
| Spark plug | NGK: BKR6E-11 (Nickel), IFR6J11 (Iridium); DENSO: K20PR-U11 (Nickel) |
| Spark plug gap | 1.0-1.1 mm (0.0394-0.0433 in) |
| Spark plug tightening torque | 25 N·m (2.5 kg·m, 18.4 ft·lb) |
Vehicle applications
| Model | Years Produced |
| Suzuki Swift | – |
| Suzuki Jimmy | – |
| Suzuki Wagon R Sorio | – |
| Chevrolet MW | – |
Author:
I want to know whether we can replace the camshaft bearings or not? We want to install a new camshaft in an m13a engine and we also want to replace the existing bearing races that support the camshaft.
hello,
what are the compatible 4WD auto gearbox (including part number) comes with M13A engine. mainly for suzuki Jimny 2003/3 model code TA JB43W-3 rear wheel drive.
thanks with regards
can you provide inforation suzuki engine K10A MA63S