From 1986 to 1995, the company’s businesses assembled the 1.6-liter Honda D16A engine, which was fitted to several of the company’s well-known models, including the Civic, Integra, and Concerto. There were numerous variations of the D16A motor, but they can be separated into two categories: those with SOHC and DOHC cylinder heads.
Internal combustion engines (D13B, D14A, D15B, and D17A) are also part of the D-series.
The engine was mounted on:
- Honda Civic 4 (EF) in 1987 – 1991;
- Honda Civic 5 (EG) in 1991 – 1996;
- Honda CR-X 1 (EC) in 1986 – 1987;
- Honda CR-X 2 (EF) in 1987 – 1991;
- Honda Concerto 1 (MA) in 1988 – 1994;
- Honda Integra 1 (DA) in 1986 – 1989;
- Rover 200 II (XW) in 1989 – 1995;
- Rover 400 I (XW) in 1990 – 1995.
Specifications
| Production years | 1986-1995 |
| Displacement, cc | 1590 |
| Fuel system | injector |
| Power output, hp | 110 – 120 (PGM-Fi SOHC: D16A6, D16A7) 115 – 130 (PGM-Fi DOHC: D16A1, D16A3, D16A8, D16A9) |
| Torque output, Nm | 135 – 145 |
| Cylinder block | aluminum R4 |
| Block head | aluminum 16v |
| Cylinder bore, mm | 75 |
| Piston stroke, mm | 90 |
| Compression ratio | 9.1 – 9.6 (PGM-Fi SOHC: D16A6, D16A7) 9.3 – 9.5 (PGM-Fi DOHC: D16A1, D16A3, D16A8, D16A9) |
| Features | SOHC (PGM-Fi SOHC: D16A6, D16A7) DOHC (PGM-Fi DOHC: D16A1, D16A3, D16A8, D16A9) |
| Hydraulic lifters | no |
| Timing drive | belt |
| Phase regulator | no |
| Turbocharging | no |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 3.6 |
| Fuel type | petrol |
| Euro standards | EURO 2/3 |
| Fuel consumption, L/100 km (for Honda Civic 1993) — city — highway — combined |
8.9 6.0 7.5 |
| Engine lifespan, km | ~300 000 |
| Weight, kg | 120 |
Disadvantages of the Honda D16A engine
This series’ power units are dependable, but after 150,000 kilometers, they are prone to oil consumption;
The majority of motor issues are linked to an erratic distributor and a lambda probe; frequently, the exhaust manifold cracks or the crankshaft pulley breaks here;
Every 90,000 kilometers, the timing belt needs to be changed; when it breaks, the valve always bends; engine speed floats because the throttle and idle valve are contaminated.
Honda D16 engine modifications
The first engine was the D16A1, a DOHC twin-shaft head with 16 valves, 30 mm inlet and 27 mm exhaust valves, a 9.3 compression ratio, and 115 horsepower. Since 1988, the power has increased to 120 horsepower, the compression ratio has increased to 9.5, and the pistons have been replaced. The Acura Integra was equipped with motors for the US market when production started in 1986. The release was stopped in 1989.
An analogue of D16A1 for Australian Acura Integra is D16A3.
D16A6: 16-valve engine with one shaft SOHC, phase 222/224, 29 mm inlet and 25 mm exhaust valves, 9.1 compression ratio, 235 cc injectors, and 107–110 horsepower. Manufacturing: 1988–1996.
D16A7 is a catalyst-free analog of D16A6 with a compression ratio of 9.6 and a power output of 119 horsepower. Manufacturing: 1988–1995.
D16A8: 16V DOHC, 9.5 compression ratio, 120 horsepower. Production period: 1988–1997.
D16A9: 126–130 horsepower, catalyst-free analog of D16A8. Manufacturing: 1988–1995.
The D16B2 is a 16-valve SOHC single shaft head engine with 190 cc injectors, a compression ratio of 9.4, and 115 horsepower. Manufacturing: 1997–2001.
D16B5: 16 SOHC valves, 12.5 compression ratio, VTEC-E variable valve timing system, 106 horsepower. produced between 1988 and 1996.
D16B6: 16V SOHC, 9.6 compression ratio, 114 horsepower. published in 1999.
European Civics’ D16V1 engine has 16 valves, a single camshaft, VTEC-E, a compression ratio of 10.4, and 109 horsepower. Manufacturing: 1999–2005.
D16W1: 16V SOHC, 9.6 compression ratio, 103 horsepower. Manufacturing: 1999–2006. mounted on a Honda HRV.
D16W3: 16V SOHC, 10.4 compression ratio, 116 horsepower. Manufacturing: 1998–2001.
D16W4: 16V SOHC, VTEC, 9.6 compression ratio, 190 cc injectors, 125 horsepower. Manufacturing: 1998–2001.
The D16W5 is an analog of the D16W4 with 124 horsepower and VTEC-E. manufactured for the Honda HRV between 2000 and 2006.
D16W7: single-shaft head, VTEC-E, 10.9 compression ratio, 115 horsepower. Manufacturing: 2001–2007.
D16W9: 130 horsepower, three-stage SOHC VTEC. Production years: 2001–2005.
D16Y1: SOHC VTEC, 9.3 compression ratio, 131 horsepower. 1992–1995 saw production.
D16Y3: 113 horsepower, degree 9.4, single shaft with camshaft from D16A6. produced between 1995 and 1997.
The D16Y4 is an analog of the D15Y3 with a different camshaft and 120 horsepower. produced between 1996 and 2000.
The D16Y5 is an analog of the D16Y3 with VTEC-E, 30 mm intake and 26 mm exhaust valves, 190 cc injectors, and 115 horsepower. 127 horsepower was produced by the VTi version. Manufacturing: 1996–2000.
The D16Y7 is an analog of the D16Y3, but it has a different shaft, 30 mm intake valves, 26 mm exhaust valves, 180 cc nozzles, and 107 horsepower. Manufacturing: 1996–2000.
D16Y8 (D16Y6): SOHC VTEC, 246/230 shaft phase, 30 mm intake and 26 mm exhaust valves, modified pistons, 9.6 compression ratio, 240 cc nozzles, and 127 horsepower. Manufacturing: 1996–2000.
The D16Y9 is an analog of the D16Y4 with a different camshaft and 107–111 horsepower. Manufacturing: 1996–2000.
D16Z5: a catalyst-equipped D16A9 analogue with 124 horsepower. 1989–1992 was the production period.
VD16Z6: SOHC VTEC with 30 mm inlet valves, 26 mm exhaust, 244/228 shaft phase, 9.2 compression ratio, 235 cc nozzles, and 125 horsepower. Manufacturing: 1992–1996.
Analogous to D16Z6, D16Z7 has a 9.6 compression ratio and 127 horsepower. produced between 1996 and 2000.
D16Z9: SOHC VTEC, 130 horsepower, 9.3 compression ratio. Manufacturing: 1994–1995.
SOHC ZC-VTEC, 9.2 compression ratio, 130 horsepower. produced between 1991 and 1995.
DOHC ZC is a twin-shaft cylinder head with a compression ratio of 9.3. In 1988, the piston was replaced, increasing the degree to 9.5. The carburetor produces 100 horsepower, while the injection options produce 115–130 horsepower. produced between 1984 and 1995.
This small, powerful engine has a single camshaft, an aluminum cylinder block, and VTEC. VTEC activates when the speed reaches 5500 rpm, with a threshold speed of 7000 rpm. There are no hydraulic lifters; instead, the timing is controlled by a belt that needs to be changed every 100,000 kilometers.
The D16A served as the model for all later Honda engines in this family. Over time, its power increased significantly while retaining its volumetric and dimensional characteristics.
The engine vibration at idle, which stops at 3000–4000 rpm, is one of the issues that owners talk about the most. Engine mounts deteriorate with time.
The effect of excessive engine vibration can also be lessened by flushing the nozzles, but it is not worth using chemicals every time to pour directly into the tank; instead, it is preferable to clean the fuel distributor on a regular basis at the service station using the appropriate tools.
The D16A is sensitive to fuel quality, just like a lot of engines, particularly injection engines.
D16A Engine Repair Parts List
| Full name of the part | Part code |
| Piston without rings Honda D16A d75.0 STD (13101-PM7-000) Teikin | 38606 STD |
| Piston without rings Honda D16A d75.0+0.50 (13101-PM7-000) Teikin | 38606 0.50 |
| Piston rings Honda D16 d75.0 STD 1.2-1.5-4.0 (13011-PM0-B02) 4 cylinders TP | 32375-STD |
| Piston rings set for 4 cylinders 1.2×1.5×2.8 | RS-35050 |
| Head bolts Honda Civic 16V M10x1.25×140 (set 10 things) Elring | 706.120 |
| Inlet valve Honda B16A 5.5x33x102.3 (14711-PR3-000) Rocky | HMA1450 |
| Inlet valve Honda D12-D16 5.5x29x115 (14711-PM3-000) Rocky | HMA1000 |
| Inlet valve Honda D16A/D16Z5/ZC1 6.6x30x105.4 (14711-PG6-000) Rocky | HMA990 |
| Exhaust valve Honda B16A/B17A/B18/D15B/D16Y/D16Z 5.5x28x102.5 (14721-PR3-000) Rocky | HMB1450 |
| Exhaust valve Honda D13/15/16 5.5x25x118.8 UM | 16-VX173 |
| Valve | V91733 |
| Valve | V94023 |
| Valve | V91730 |
| Valve | V94022 |
| Valve | V91732 |
| Valve guide bush | VAG92397 |
| Valve guide bush | VAG96221 |
| Valve cap inlet Honda color code “white” (12210-P45-G01) Elring | 130.560 |
| Oil scraper cap | 130.860 |
| Valve stem seals (130.860+130.560) | 084.300 |
| Basic liners Honda B16A Taiho | M461H-STD |
| Basic liners Honda B18/B20 Taiho | M458H-STD |
| Basic liners | MS-2208GP STD |
| Connecting rod bushings Honda Civic D16 86-, ZC 84- NDC | CB-2208GP STD |
| Connecting rod bushings Honda D16 Taiho | R460H-STD |
| Semi-rings persistent Honda B20A Taiho | T458A-STD |
| Semi-rings persistent | TW-2208GP STD |
| Spark plug | 90919-01164 |
| Oil filter h=103.0 Honda KS Original /10 | 50 013 146 |
| Fuel filter Honda Accord 1.8i-2.2i 16V, Civic 1.5i-1.8i 16V KS | 50 013 824 |
| V-ribbed belt | 4 PK 875 |
| Hydraulic compensator Fiat 16V (4 641 3078) AE | FOL106 |
| Upper gasket set | 50001527 |
| Head gasket | 50001327 |
| Water pump | 50 005 084 |
| Piston without rings Honda D16A6 d75.0 STD (13101-PM6-000) Teikin | 38173 STD |
| Complete gasket set | 50001716 |
| Upper gasket set | 50001530 |
| Head gasket | 50001326 |