Honda D engine

The Honda D engine is a family of inline 4-cylinder engines used in a variety of compact Honda models, most commonly the Honda Civic, but also used in the Integra, Logo, CRX, Stream and others. Displacement ranges between 1.2 L and 1.7 L, and the engine is available in SOHC and DOHC versions. Some SOHC models are equipped with VTEC. Power range started from 62 hp (currently the smallest engine uses a 1.4 L 90 hp engine, code D14A4) to 135 hp. The D-series was introduced in 1984 and ended production in 2005 with the introduction of the 8th generation Honda Civic.



Hot-rodding the D series

Although the availability of used D-series engines at low prices makes it somewhat popular among those who modify it for high performance (as well as a popular item for swapping into earlier or less powerful Civics for an instant and trouble free power upgrade), the unmodified engine won't survive quite as much power enhancement by use of such external modifications as turbochargers, superchargers, or nitrous oxide as the more powerful, somewhat more robust, and much more expensive B-series;

The Achilles heel of the D-series seems to be the connecting rods, which will withstand a substantial and noticeable increase in power up to a certain point, but will break if that limit is exceeded. Generally, a D-series motor can handle up to about 220 bhp, as long as care is taken to avoid detonation through careful spark and fuel management. Of course, the connecting rods, pistons, and other internal parts can be replaced with more durable aftermarket parts which will survive almost any amount of power desired, but some people choose to swap to a B-series motor instead in order to avoid the potential risks of engine building. In all practicality though, the B series is much more expensive to swap in than most D-series engine builds with forced induction or nitrous combined. The D-series also has the ability to swap some parts between different motors and among some B-series parts as well.

When employing forced induction on a D16, at a minimum the stock hypereutectic pistons should be replaced as well as the connecting rods if the commonly used "stock parts" limit of 220 HP is to be exceeded, although it should be noted that the D series crankshaft in particular has been found to reliably handle up to 600HP.

High compression OEM pistons are a quick way to gain horsepower in a naturally aspirated motor. All D-series motors run the same bore (75 mm) however, most factory motor variations (i.e. d16a1, d15b7, d16y7) have used a different piston compression height as well as a different dome or dish. In general, the older D motors have a higher compression height and a larger combustion chamber which create around a 9.1:1 - 9.4:1 compression ratio from the factory. The newer variants have slightly lower compression height combined with a much smaller combustion chamber to create a compression ratio of 9.4:1 - 9.9:1. Now if you combine an older d16 motor's piston with that of a newer d16 head you can end up with a compression ratio of about 10.7:1 with no other work (i.e. D16A1 piston, D16A6 head). There are a few websites that have compression ratio calculators for Honda motors.

·D15 has smaller main bearing diameters. D16 and D17 cranks share the same size main bearing diameters.

·D16 and D17 rods all have the same major dimensions. The D15 rod is shorter (in general) and has a smaller bearing size, although the wrist pin bore is the same.

·D15Z1 and D15B motors have a rod that is the same length as a D16. Other than the rod length, the rest of the bottom end is D15 spec (i.e. rod and crank bearings). D15B has D16 sized rod journals. D15B uses the same p28 rods that the D16z6 does. All other D15s have smaller rod journals.

·The B18A/B Rod has the same bearing bore as a D16. It is 0.044" wider, so the sides of the "big end" of the rod have to be shaved down for use in a D16/17. The wrist pin bore is larger so a conventional D15/16/17 piston can only be used if the stock "small end" bushing in the rod is replaced with one of the proper size. These affordable rods are generally considered to be able to handle up to 300 HP.

·There is a D16 motor that runs on compressed natural gas (96-98 Civic GX). The pistons from that motor have a 12.5:1 CR. The wrist pin bore in the 98-00 D16B5 is 21 mm, like the B18B rod. D17A7 01-05 Civic GX uses 19 mm wrist pins.

·Interestingly enough, the Suzuki Vitara has a 75mm bore as well, so engine builders have occasionally used these pistons in the D16 motor. These pistons are commonly referred to as Vitaras, and they provide an 8.5:1 compression ratio, and thicker ring lands. Lowering the stock compression ratio lowers compression heat, which raises the detonation thresh-hold and is useful when employing forced induction.



Mini-Me

One of the most popular and effective methods of achieving greater power from a D-series motor is replacing the cylinder head with one from a more powerful D-series motor. This is usually done between D16A6 and D16Z6 or D16Y7 and D16Y8 engines. The Z6 and Y8 heads are VTEC (Variable Valve Timing and Lift Electronic Control) equipped, and increase horsepower significantly over stock levels. This operation is known as a "Mini Me" or partial swap. Mini Me's are popular because they offer a substantial performance upgrade by adding VTEC to the motor at a relatively low cost.


Engine Specs


D13 Series Engines (1.3 Litre)

D13B1

* Found in:
o 1987-1991 Honda Civic DX (European Market)
+ Displacement : 1343 cm3
+ Bore and Stroke : 75 mm X 76 mm
+ Compression : 9.5:1
+ Power, Torque : n/s (Not stated in Owners Manual)
+ Valvetrain : SOHC, 4 valves per cylinder
+ Fuel Control : Single Carburettor


D13B2

* Found in:
o 1992-1995 Honda Civic DX (European Market)
+ Displacement : 1343 cm3
+ Bore and Stroke : 75 mm X 76 mm
+ Compression : 9:1
+ Power, Torque : 75 hp @ 5300 rpm
+ Valvetrain : SOHC, 4 valves per cylinder
+ Fuel Control : Carburettor


D14 Series Engines (1.4 Litre)

D14A1

* Found in:
o 1987-1991 Honda Civic GL and 1990 CRX (European Market)
+ Displacement : 1396 cm3
+ Bore and Stroke : 75 mm X 79 mm
+ Compression : 9.3:1
+ Power, Torque : 90 ps (90 bhp) @ 6300 rpm, 112Nm @ 4500 rpm
+ Valvetrain : SOHC, 4 valves per cylinder
+ Fuel Control : Dual Carburettor


D14A2

* Found in:
o 1995-1996 Honda Civic MA8 (European Market)
+ Displacement : 1396 cm3
+ Bore and Stroke : 75.0 mm X 79.0 mm
+ Compression : 9.2:1
+ Power, Torque : 66kW @ 6100 rpm, 117Nm @ 5000 rpm
+ Valvetrain : SOHC, 4 valves per cylinder
+ Fuel Control : PGM-FI


D15 Series Engines (1.5 Liters)

D15A2

* Found in:
o 1984-1987 Honda CRX HF
+ Displacement : 1488 cm3
+ Bore and Stroke : 74 mm X 86.5 mm
+ Compression : 9.6:1
+ Power : 58 hp @ 4500 rpm & 80 ft·lbf @ 2500 rpm
+ Valvetrain : SOHC
+ Fuel Control : carburete


D15A3

* Found in:
o 1985-1987 Honda CRX Si and 1987 Civic Si (AU/NZ)
+ Displacement : 1488 cm3
+ Bore and Stroke : 74 mm X 86.5 mm
+ Compression : 8.7:1
+ Power : 91 hp @ 5500 rpm & 93 ft·lbf @ 4500 rpm
+ Valvetrain : SOHC, 3 valves/cylinder
+ Fuel Control : Fuel Injected, Multi-point PGM-FI


D15B

* VTEC
* Found in:
o 1991-1999 Honda Civic VTi EG4 (Japanese Market)
+ Displacement : 1493 cm3
+ Bore and Stroke : 75 mm X 84.5 mm
+ Rod Length : 137 mm
+ Compression : 9.6:1
+ Power : 130 hp @ 6800 rpm & 102 ft·lbf @ 5200 rpm
+ Valvetrain : SOHC VTEC
+ Fuel Control : OBD-1 MPFI

* 3-stage VTEC
* Found in:
o 1996-1999 Honda Civic VTi EK3 and Ferio Vi
+ Displacement : 1493 cm3
+ Bore and Stroke : 75 mm X 84.5 mm
+ Rod Length : 137 mm
+ Compression : 9.6:1
+ Power : 130 hp @ 6800 rpm & 102 ft·lbf @ 5200 rpm
+ Valvetrain : SOHC VTEC
+ Fuel Control : OBD-2 MPFI


D15B1

(Essentially a D15B2 engine with a mild camshaft, a restrictor plate under the DPFI, and an air flow restricton in the DPFI unit)

* Found in:
o 1988-1991 Honda Civic STD Hatchback
+ Displacement : 1493 cm3
+ Bore and stroke : 75 mm X 84.5 mm
+ Compression : 9.2:1
+ Power : 70 hp @ 5500 rpm & 83 ft·lbf @ 3000 rpm
+ Valvetrain : SOHC (4 valves per cylinder)
+ Fuel Control : OBD-O DPFI


D15B2

* Found in:
o 1988-1991 Honda Civic DX/LX, CRX DX, Civic Wagon DX/Wagovan,
o 1992-1995 Honda Civic Hatchback LSi (European Market)
+ Displacement : 1493 cm3
+ Bore and Stroke : 75 mm X 84.5 mm
+ Compression : 9.2:1
+ Power : 92 hp @ 6000 rpm & 89 ft·lbf @ 4500 rpm
+ Valvetrain : SOHC (4 valves per cylinder)
+ Fuel Control : OBD-0 DPFI


D15B6

* Found in:
o 1988-1991 Honda CRX HF
+ Displacement : 1493 cm3
+ Bore and Stroke : 75 mm X 84.5 mm
+ Compression : 9.1:1
+ Power : 62 hp(88-89) 70 hp(90-91)@ 4500 & 83 ft·lbf @ 3000 rpm
+ Valvetrain : SOHC (2 valves per cylinder)
+ Fuel Control : OBD-0 MPFI


D15B7

* Found in:
o 1992-1995 Honda Civic DX/LX
o 1992-1995 Honda Civic LSi Coupe (European Market)
+ Displacement : 1493 cm3
+ Bore and Stroke : 75 mm X 84.5 mm
+ Compression : 9.2:1
+ Power : 102 hp @ 5900 rpm & 98 ft·lbf @ 5000 rpm
+ Valvetrain : SOHC (4 valves per cylinder)
+ Fuel Control : OBD-1 MPFI


D15B8

* Found in:
o 1992-1995 Honda Civic CX
+ Displacement : 1493 cm3
+ Bore and Stroke : 75 mm X 84.5 mm
+ Compression : 9.1:1
+ Power : 100 hp @ 4500 rpm & 83 ft·lbf @ 3000 rpm
+ Valvetrain : SOHC (2 valves per cylinder)
+ Fuel Control : OBD-1 MPFI

ITS 70 HP!!


D15Z1

* VTEC-E
* Found in:
o 1992-1995 Honda Civic VX
o 1992-1995 Honda Civic VEi (European Market)
+ Displacement : 1493 cm3
+ Bore and Stroke : 75 mm X 84.5 mm
+ Rod Length : 137 mm
+ Compression : 9.3:1
+ Power : 92 hp @ 5500 rpm & 97 ft·lbf @ 4500 rpm
+ VTEC Switchover : 2500 rpm
+ Valvetrain : SOHC VTEC-E (4 valves per cylinder)
+ Fuel Control : OBD-1 MPFI


D16 Series Engines (1.6 Liters)

D16A1

* Found in:
o 1986-89 Acura Integra (North America)
+ Displacement : 1590 cm3
+ Bore and Stroke : 75 mm X 90 mm
+ Compression : 9.3:1
+ Power : 113 hp @ 6250 rpm & 99 ft·lbf @ 5500 rpm
+ Valvetrain : DOHC
+ Fuel Control : OBD-0 MPFI


D16A3

* Found in:
o 1986-89 Acura Integra (Australia)
+ Displacement : 1590 cm3
+ Bore and Stroke : 75 mm X 90 mm
+ Compression : 9.5:1
+ Power : 118 hp @ 6500 rpm & 103 ft·lbf @ 5500 rpm
+ Valvetrain : DOHC
+ Fuel Control : OBD-0 MPFI


D16A6

* Found in:
o 1988-1991 Honda Civic Si, CRX Si, Civic Wagon RT4WD
o 1988-1995 Honda Civic Shuttle RT4WD (UK/Europe/Asia/AU/NZ)
o 1989-1996 Rover 216/416 GTI (UK/Europe)
+ Displacement : 1590 cm3
+ Bore and Stroke : 75 mm X 90 mm
+ Compression : 9.6:1
+ Power : 110 hp @ 6000 rpm & 100 ft·lbf @ 5000 rpm
+ Valvetrain : SOHC
+ Fuel Control : OBD-0 Multi-point PGM-FI
+ Head Code : PM3


D16A8

* Found in:
o 1988-1991 Civic/CRX/Concerto (UK/Europe/Australia)
o 1990-1995 Rover 216/416 (UK/Europe)
+ Displacement : 1590 cm3
+ Bore and Stroke : 75 mm X 90 mm
+ Compression : 9.5:1
+ Power : 122 hp @ 6800 rpm & 108 ft·lbf @ 5700 rpm
+ Valvetrain : DOHC
+ Fuel Control : OBD-0 MPFI


D16A9

* Found in:
o 1988-1991 Civic/CRX/Concerto (UK/Europe)
o 1989-1996 Rover 216/416 GTI (UK/Europe)
o 1992-1995 Civic Si (Peruvian version)
o 1992-1995 Civic GTi
+ Displacement : 1590 cm3
+ Bore and Stroke : 75 mm X 90 mm
+ Compression : 9.5:1
+ Power : 130 hp @ 6800 rpm & 108 ft·lbf @ 5700 rpm
+ Valvetrain : DOHC
+ Fuel Control : OBD-0 MPFI


D16Y5

* VTEC-E
* Found in:
o 1996-2000 Honda Civic HX
+ Displacement : 1590 cm3
+ Bore and Stroke : 75 mm X 90 mm
+ Compression : 9.4:1
+ Power : 115 hp@ 6200 rpm & 104 ft·lbf @ 5400 rpm
+ Valvetrain : SOHC VTEC-E
+ Fuel Control : OBD-2 MPFI
+ Head Code : PJ2


D16Y7

* Found in:
o 1996-2000 Honda Civic DX/LX/CX, 1996-97 Del Sol S
+ Displacement : 1593 cm3
+ Bore and Stroke : 75.5 mm X 90 mm
+ Compression : 9.4:1
+ Power : 106 hp @ 6200 rpm
+ Torque (ft·lb@rpm): 103 (141 N·m) @ 4,600 rpm
+ Valvetrain : SOHC
+ Fuel Control : OBD-2 MPFI
+ Head Code : P2F


D16Y8

* VTEC
* Found in:
o 1996-2000 Honda Civic EX
o 1996-1998 Honda Civic Coupe SiR (UK model
o 1997-2000 Acura 1.6EL
o 1996-1998 Honda Civic Si
+ Displacement : 1590 cm3
+ Bore and Stroke : 75 mm X 90 mm
+ Compression : 9.6:1
+ Power : 127 hp @ 6600 rpm & 107 ft·lbf @ 5500 rpm
+ VTEC Switchover: 5200 rpm
+ Valvetrain : SOHC VTEC
+ Fuel Control : OBD-2 MPFI
+ Head Code : P2J


D16Z6

* VTEC
* Found in:
o 1992-1995 Honda Civic EX/Si, Del Sol Si,
o 1992-1995 Honda Civic ESi (European Market)
+ Displacement : 1590 cm3
+ Bore and Stroke : 75 mm X 90 mm
+ Compression : 9.4:1
+ Power : 125 hp @ 6500 rpm & 106 ft·lbf @ 5200 rpm
+ VTEC Switchover 4800 rpm
+ Valvetrain : SOHC VTEC
+ Fuel Control : OBD-1 MPFI
+ Head Code : P08


D17 Series Engines (1.7 Liters)

D17A1

* Found in:
o 2001-2005 Honda Civic DX/LX/VP
+ Displacement : 1668 cm3
+ Bore and Stroke : 75 mm X 94.4 mm
+ Compression : 9.5:1
+ Power : 5646 hp @ 6100 rpm & 110 ft·lbf @ 4500 rpm
+ Valvetrain : SOHC
+ Fuel Control : OBD-2 MPFI


D17A2

* VTEC
* Found in:
o 2001-2005 Honda Civic EX
+ Displacement : 1668 cm3
+ Bore and Stroke : 74.98 mm X 94.4 mm
+ Compression : 9.9:1
+ Power : 127 hp @ 6300 rpm & 114 ft·lbf @ 4400 rpm
+ Valvetrain : SOHC VTEC-E
+ Fuel Control : OBD-2 MPFI


D17A6

* VTEC-E
* Found in:
o 2001-2005 Honda Civic HX
+ Displacement : 1668 cm3
+ Bore and Stroke : 75 mm X 94.4 mm
+ Compression : 9.5:1
+ Power : 170 hp @ 6100 rpm & 111 ft·lbf @ 4500 rpm
+ Valvetrain : SOHC VTEC-E
+ Fuel Control : OBD-2 MPFI


D17A7

* Found in:
o 2004-2005 Honda Civic DX
o Uses CNG (Compressed Natural Gas)
+ Displacement : 1668 cm3
+ Bore and Stroke : 75 mm X 94.4 mm
+ Compression : 12.5:1
+ Power : 100 @ 6100 rpm & 98 ft·lbf @ 4000 rpm
+ Valvetrain : SOHC
+ Fuel Control : OBD-2 MPFI

Initial List created from Honda Engine List (6-19-2006). on HondaSwap.com



ZC (similar to D16A1, D16A3, D16A6, D16A8 and D16A9 engines)

A few D-series variants are labelled "ZC" (usually JDM), but they are not truly a different series. There are both SOHC and DOHC ZC engines. The SOHC ZC is similar to the D16A6 engine, and the DOHC ZC is similar to the D16A1, D16A3, D16A8 and D16A9 engines.

Euro Mk1 (85-87) 1.6 CRX's are fitted with an engine designated "ZC1" which is a higher spec 125bhp version of the D16a1.