Important specifications of d14 engines

[saxophonias]

At this topic we are going to provide technical specifications of d14 engines. Everything that someone needs to know enginewise.

[saxophonias]

The story of d14 engines begins prior to the introduction of ej9. Actually the first d14 engine had the code d14a1 and was first launched with 4rth gen civics and crxs (1988-1991). Here are it's specs

D14A1
1396cc Dual Carb.
75x79
9.3 c/r
90hp @6300
112NM or 11.4kg @4500
Fuel System----------------->Keihin dual carb VF33
Ignition System-------------->TSZi Trans i
Ignition Coil------------------>Hitachi 11V
Firing order ----------------->1-3-4-2
Distributor-------------------->Hitachi
Sparks----------------------->NGK BCPR6-11
Electric gap------------------> 1.1
Fuel Pump Delivery Pressure--->0,07 0,23
Valve Clearance--------------> Inlet 0,17-0,22mm (cold)
Exhaust 0,22 -0,27
Compression Pressure---------->9.5-13 bar
Oil Pressure------------------->4,6 bar @3000rpm
Drive Belt Tension------------->9mm
Alternatior-------------->11mm
Steering---------------->9mm
A/C-------------------->12mm
Thermostat's open----------->78 +-2 Celsius
Engine Oil specs------------->5W30 (cold clim) 10W40 (mod) 20-40(hot)
Oil Capacity with filter------->3.5lt
Gearbox oil------------------>10W30/40
A/T------------------------->Dexron 2
Cooling System-------------->5.4lt

D14a2 engine came with MA Civic series built at Swindon England. The known as 5-door civic.
The main differences here is the Electronic Fuel Injection PGM-Fi along with ECU.

D14A2
Compression Ratio--------------->9,2
Fuel System--------------------->MFIs
Air Metering--------------------->MAP
Ignition Coil Supply Voltage------->12V
λ values at increased iddle-------->0,98-1.02
Spark Plugs----------------------->BKR6E-11 (1.1gap)
Fuel System Pressure w/o Vacuum-->2.8-3.3 bar
ECT sensor------------------------>200-400 ohm/80C
Injector--------------------------->10-13 ohm
Valve Clearance
inlet------------>0,18-0.22mm
exhaust-------> 0.23-0.27mm
Compression Pressure------------->9.3-12.7
Oil Pressure---------------------->3.5bar/3000rpm
Drive Belt Tension---------------->7mm
Alternator------------------------>10
Engine oil capacity with filter------>3.5lt
Power Steering capacity----------->1lt

D14a3 engine scored 75hp@6000rpm and was meant for market/countries which imposed taxes on hp and not cc.

D14A3
Compression ratio------------------->9.1
Fuel System Pressure w/o Vacuum---->2.3-2.8
Compression Pressure----------------->9.3-13
Oil Pressure-------------------------->3.4 @3000rpm
Thermostat opens at----------------->76-80C
Drive Belt Tension-------------------->8mm
Alternator--------------------------->10mm

D14a4 found on ej9 chassis 89hp @ 6200
Same specs with d14a3 apart from performance and ECU.

The list of d14s go on with d14a5 and a7 with 75hp
D14a8=90hp(MB series)
D14Z1-->75hp
D14Z2-->89hp
D14Z3-->75hp
D14Z4-->89hp
The latest engines are found on facelift ej9 civic (99-00 models). This engines have some slight differenced in ECU mapping as they are obd2b in contrast to obd2a 96-98 models.

D14s Throttle Bodies are 56mm like the majority of d-series engines.

[saxophonias]

Here are some important specs including in the manual

[saxophonias]

[hondaNickx]

Tb is 55mm Not 56mm .

[saxophonias]

Tb is 55mm Not 56mm .

Are you sure about 55mm? I always thought that d-series TB are the same 56mm.

[BETEK]

D14A4
* Found in:
o 1996-2000 Honda Civic 1.4iS EJ9 3 & 4 door (European Market)
+ Displacement : 1,396 cc (85.2 cu in)
+ Bore and Stroke : 75.0 mm × 79.0 mm (2.95 in × 3.11 in)
+ Compression : 9.2:1
+ Piston code: P3Y
+ Ecu code: P3Y
+ big-end bore: 43 mm
+ Rod lenght(center to center): 138mm
+ Power : 90 hp (67.1 kW, 91.3 ps) @ 6400 rpm
+ Torque : 91.45757 ft·lbf (12.64 kg/m, 124 Nm) @ 4800 rpm
+ Valvetrain : SOHC (4 valves per cylinder)
+ Red line : 6800 RPM
+ Fuel cut: 7200 RPM
+ Fuel Control :OBD2 , DPFI Dual point fuel injection, 1+3 2+4 injectors thrown together
+ Transmission: S40

[Dwardu]

this is a handy pdf:

http://www.hondagranturismo.it/articoli ... motore.pdf

[saxophonias]

This is a cool site with performance specs of many cars.
Here is for ej9 d14a4
http://www.automobile-catalog.com/auta_perf1.php

Acceleration:
0-30 km/h (s):2.6

0-40 km/h (s):3.2

0-50 km/h (s):4

0-60 km/h (s):5.3

0-70 km/h (s):6.5

0-80 km/h (s):7.8

0-90 km/h (s):9.4

0-100 km/h (s):11.8

0-110 km/h (s):14.2

0-120 km/h (s):16.9

0-130 km/h (s):20.1

0-140 km/h (s):24.3

0-160 km/h (s):40.2

0-180 km/h (s):307.8
---------------------------

top gear value theor.):


(km/h/mph)

I:57 / 35

II:96 / 60

III:147 / 91

IV:203 / 126

V:262 / 163

Final drive ratio std: 4.058

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it's nice to compare too!

[archyman]

It seems that the EJ9 is better than the 9gen civic(1.4) in both acceleration and fuel consumption..shame..
Comparing the weight and power of both the Ek9 and the Ej9 (at least in theory), i figured that the engine needs HP upgrade of 54% and Torque upgrade of at least 12% to match it. Or this is something like 138.6hp and 134.4 Nm, all achieved by our friends here:)
I guess it's, up to Joris to say if his tuned ej9 runs as well as a stock ek9 (on the straight line that is)