In 1986, Honda decided to expand its D series by creating D16A, a motor with greater capacity. It was built on the framework of 1.5L D15A featuring an aluminum cylinder block and block height of 212 mm. The motor kept a stroke camshaft of 90 mm, connecting rods of 137 mm plus pistons of 75 mm with 30 mm height. By increasing piston stroke, engineers coped with the task of getting a motor with a 1.6L capacity.
The cylinder block’s top gained a double overhead camshaft with 16 valves. The diameter of the intake valve was 30 mm, while the exhaust ones were 27 mm and the diameter of the valve stem was 6.5 mm.
In 1988, D16A got an additional 5 hp due to the replacement of camshafts with more dynamical ones and raised compression index equal to 9.5.
The timing belt, controlling the camshafts, must be substituted after every 60,000 miles run. Plus, valves require regulations every 24,000 miles.
D16A1 features a 55 mm throttle body.
Motors of this range were supplied with a programmed fuel injection system.
The engine’s firing order was 1-3-4-2. OEM fuel injectors had a capacity of 240 cc.
Besides D16, Honda also manufactured D12, D13, D14, D15, D17, and ZC motors.
Afterward, 1.8L R18A motor substituted D16.
D16 Engine Specs
| Manufacturer | Honda Motor Company |
| Also called | Honda D16 |
| Production | 1986-2007 |
| Cylinder block alloy | Aluminum |
| Configuration | Inline-4 |
| Valvetrain | SOHC 4 valves per cylinder |
| Piston stroke, mm (inch) | 90 (3.54) |
| Cylinder bore, mm (inch) | 75 (2.95) |
| Compression ratio | 9.1 9.2 9.3 9.4 9.5 9.6 10.9 12.5 |
| Displacement | 1595 cc (97.3 cu in) |
| Power output, horsepower | 77 kW (105 HP) at 6,200 rpm 80 kW (110 HP) at 5,600 rpm 84 kW (115 HP) at 6,250 rpm 88 kW (120 HP) at 5,600 rpm 90 kW (122 HP) at 6,800 rpm 92 kW (125 HP) at 6,600 rpm 95 kW (130 HP) at 6,800 rpm 96 kW (131 HP) at 6,600 rpm |
| Torque output | 135 Nm (100 lb·ft) at 3,400 rpm 136 Nm (100 lb·ft) at 4,800 rpm 134 Nm (99 lb·ft) at 5,500 rpm 140 Nm (103 lb·ft) at 4,800 rpm 146 Nm (108 lb·ft) at 5,900 rpm 144 Nm (106 lb·ft) at 5,200 rpm 143 Nm (105 lb·ft) at 5,700 rpm 145 Nm (107 lb·ft) at 5,200 rpm |
| Redline | 6,100 (D16W7) 6,500 (D16A6) 6,800 (D16Y7, D16Y4, D16Y5, D16Y8, D16W4) 7,200 (D16Z, D16Y3, D16A9, D16W9, D16Y1, D16Y9) |
| HP per liter | 66 69 72 75 76 78 81 82 |
| Fuel type | Gasoline |
| Weight, kg (lbs) | 140 (310) |
| Fuel consumption, L/100 km (mpg) -City -Highway -Combined | Honda Civic 10.0 (23.5) 6.6 (36) 7.8 (30) |
| Turbocharger | Naturally aspirated |
| Oil consumption, L/1000 km (qt. per miles) | up to 1.0 (1 qt. per 600 miles) |
| Recommended engine oil | 5W-30, 10W-30, 10W-40, 15W-40 |
| Engine Oil Capacity, L (qt.) | 3.3 (3.5) |
| Oil change interval, km (miles) | 5,000-10,000 (3,000-6,000) |
| Normal engine operating temperature, °C (F) | 90 (194) |
| Engine lifespan, km (miles) -Official information -Real | – 250,000+ (150,000) |
| Tuning, HP -Max HP -No lifespan loss | 250+ – |
D16 Engine Modifications
- D16A1 – the first engine, 16-valve DOHC head, 30 mm intake valves, 27 mm – exhaust, the compression ratio is 9.3, the power of 115 hp. From 1988 the engine got a new piston, the compression ratio was increased to 9.5, and the power grew to 120 hp. Its production began in 1986 for Acura Integra on the US market and stopped in 1989.
- D16A3 – the D16A1 for Australian Acura Integra.
- D16A6 – 16 valve engine with SOHC cylinder head, camshaft duration is 222/224 deg, 29 mm diameter of intake valve, exhaust -25 mm, 9.1 compression ratio, fuel nozzles are 235 cc, power is 107-110 hp. Production years are 1988-1996.
- D16A7 – D16A6 without a catalytic converter, 9.6 compression ratio, the power is 119 hp. Production: 1988-1995.
- D16A8 – 16 valve DOHC head, 9.5 compression ratio, the power is 120 hp. Production: 1988-1997.
- D16A9 – analog of D16A8 without a catalytic converter, 126-130 hp. Production: 1988-1995.
- D16B2 – 16 valve engine with SOHC head, 9.4 compression ratio, fuel nozzles is 190 cc, 115 hp. Production: 1997-2001.
- D16B5 – SOHC 16 valve engine with 12.5:1 compression ratio. The engine has a VTEC-E system. Its power is 106 hp. The D16B5 was being produced from 1988 to 1996.
- D16B6 – 16 valve SOHC, 9.6 compression ratio, 114 hp. Produced only in 1999.
- D16V1 – this engine was for the European Civic model. Specs: 16 valves SOHC head, VTEC-E, 10.4 compression ratio, 109 hp. Production: 1999-2005.
- D16W1 – 16 valve SOHC engine, 9.6 compression ratio. It makes 103 hp. Applications: 1999-2006 Honda HRV.
- D16W3 – 16V SOHC, 10.4 compression ratio. Engine power is 116 hp. This modification was being produced since 1998 to 2001.
- D16W4 – 16V SOHC, VTEC, 9.6 compression ratio, 190 cc fuel nozzles, 125 hp. Production: 1998-2001.
- D16W5 – the same D16W4 but with the VTEC-E system. Power is 124 hp. It was being produced from 2000 to 2006 and installed in Honda HRV.
- D16W7 – SOHC head, VTEC-E, 10.9 compression ratio, 115 hp. Production: 2001-2007.
- D16W9 – the engine got 3-Stage VTEC. It produced 130 hp. 2001-2005.
- D16Y1 – SOHC VTEC, 9.3 compression ratio, 131 hp. 1992-1995.
- D16Y3 – SOHC head with camshaft installed from D16A6, 9.4 CR, and 113 hp. It was being produced from 1995 to 1997.
- D16Y4 – analog of D15Y3, but it had another camshaft. 1996-2000.
- D16Y5 – analog of D16Y3 equipped with VTEC-E system, the intake valve diameter is 30 mm, 26 mm – exhaust, 190 cc fuel nozzles, the power is 115 hp. The VTi version produced 127 hp. Production: 1996-2000.
- D16Y7 – 180 cc fuel nozzles, 107 hp. Production: 1996-2000.
- D16Y8 (D16Y6) – SOHC VTEC, camshaft duration is 246/230 deg, the diameter of intake valves is 30 mm, exhaust – 26 mm, new pistons, a compression ratio is 9.6, 240 cc nozzles, the power is 127 hp. Production years: 1996-2000.
- D16Y9 – D16Y4 with new camshaft, power range is 107-111 hp. Production: 1996-2000.
- D16Z5 – analog of D16A9 with a catalytic converter produced 124 hp. Production: 1989-1992.
- D16Z6 – SOHC VTEC, camshaft duration is 244/228, 9.2 compression ratio, 235 cc fuel nozzles, 125 hp. Production: 1992-1996.
- D16Z7 – analog of D16Z6 with a compression ratio 9.6:1. The power is 127 hp. It was being produced from 1996 to 2000.
- D16Z9 – SOHC VTEC, 9.3 CR, 130 hp. Production: 1994-1995.
- SOHC ZC – VTEC, 9.2 compression ratio, 130 hp. It was being produced from 1991 to 1995.
- DOHC ZC – twin cam cylinder head, the compression ratio is 9.3 (9.5 since 1988), 100 hp with carburetor and 115-130 hp with fuel injection. It was being produced from 1984 to 1995.
What Cars Have A Honda D16 Engine?
- Honda Accord
- Honda Civic
- Honda Ballade
- Honda Capa
- Honda Civic Shuttle
- Honda Concerto
- Honda CRX
- Honda Del Sol S
- Honda Domani
- Honda HRV
- Acura Integra
- Rover 216
- Rover 416
Honda D16 Engine Problems and Reliability
Having much in common with the D15B motor, D16 also faces oil leakage as well as has troubles with revolutions and misfiring. Though, this motor still remains very enduring and secure. It can run for more than 200,000 miles.
- Crankshaft sheaves breakdown. This trouble is rather widespread for these motors. Depending on the reason for the breakage, it’s recommended to substitute either sheaves or a crankshaft.
- Rough idle. Frequently, it’s a consequence of an unclean throttle body or idle control valve. Besides, it’s advisable to inspect the O2 sensor as it can be another reason for this malfunction.
- Diesel noise. If you notice that your engine produces a sound resembling one of the diesel motors, it may signify that the exhaust manifold is broken or features a fracture. There is no sense in welding the fracture as the exhaust manifold won’t be fully repaired. Acquire a fresh one.
Author
The information provided in this article is for general informational purposes only. The author and publisher make no representations or warranties of any kind, express or implied, regarding the accuracy, adequacy, validity, reliability, availability, or completeness of any information presented. The reader is advised to consult a qualified professional, such as a mechanic or dealership, before making any decisions related to their vehicle's engine oil or maintenance.