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Revision as of 03:32, 26 April 2010

Some 1980-1982 Datsuns in Asia markets came with an OEM (factory) EFI system. Nissan called it "EGI" -- Electronic Gasoline Injection (日産 EGI). This is the "rare as" A14E Injection motor. At 92 horsepower it was far superior to the carbureted 80 hp A14/A15, in fact this was the most powerful A engine offered by Nissan, with more horsepower than the twin-carb GX Engine.

1 Overview
2 Performance
3 Manifolds
- 3.1 Exhaust
- 3.2 Intake
4 Throttle Body
5 Idle Air Bypass
6 Injectors
7 Block Ventilation
8 Control
9 Fuel Piping
10 Fuel Pump
11 EGR
- 11.1 VVT
12 Service Manual
13 Photo Index

Overview

quote:
a friend of mine has a system that came on the A14 in the M10 Pulsars (very first ones). The set up he got came from Singapore

The A14E engine came in:

1979-1981 Langley (N10 Pulsar) -- Asian markets
1978-up Feb - Sunny 1400SGX-E Coupe -- Asian markets

A14E was available until October 1980. It was replaced by A15E in November 1980.

A14 EFI manifold

quote:

SSS as I remember at one stage they had import carbie A15 engines for round $600 and injected A14 and A15 for around $800

Reportedly, Nepean Sports classics in Castlereagh NSW was selling import motors. carlos' son ran one. These are fairly sought after by the rally guys as the narrow runners provide torque and the length also good top end, too small for a big A15 though.

These possibly came in later model Nissan Vanettes, the reason they seem rare is both my manifolds broke across the bottom of no's 1 & 2 inlet runner. Plus it suffers from reversion with a big cam.

These were also available in asian markets (Japan, Singapore, etc).

quote:

A14 EGI = HB310 (1978-1980) Type-GX & SGX
A15 EGI = PB310 (1980-1981) Type-GX & SGX

As for the name in Japan, Nissan calls EGI and Toyota EFI.
Although the EGI system should excel Carburettors in the performance, old EGI is inferior to Carburettors.

A series injection manifold

Discussions:

As you can see here, the setup is nearly identical to 1980 200SX EFI system:

This car is missing the air induction piping that goes across the radiator (see 200SX EFI for layout and diagrams)

B310 Factory Setup

Performance

This factory Nissan setup was designed for typical mass-market street performance. Expect better low-speed horsepower performance than a stock DCH306 carburetor (due to the longer runners), AND increased peak horsepower.

Quite a large horsepower difference:

A14E: 92 PS @ 6400 rpm, 11.7 kg-m @ 3600 rpm
A14: 80 PS @ 6000 rpm, 10.2 kg-m @ 3600 rpm

However, it is not a racing system. In a heavily modified engine, carburetion has more potential:

Quote
A factory EFI setup imported from Japan was tried, and found to be much smoother, but ... restrictive above 6000rpm when used with the [racing] cam.

Manifolds

14035-H9201 GASKET-MANIFOLD TO CYLINDER HEAD A14E, A15E
- has notches at the top for the injectors

Exhaust

The exhaust manifolds have not heat riser valve, and do not fasten to the bottom of the intake manifold -- like the A12GX manifold.

A14E has a free-flowing single outlet exhaust manifold:

Certain other late model A-series engines are similar, but the A14E manifold is unique.

A15E has a twin-outlet exhaust which looks nearly identical to A12GX Engine

14004-H9200 MANIFOLD-EXHAUST A14E
- Single outlet (A14-style, uses regular A14 Exhaust piping)
  1.5 exhaust. The inner portion is about 1-5/8 max diameter
  
  dual-plane design

14004-H9260 MANIFOLD-EXHAUST A15E
- Dual outlet (A12GX-style)
- 20711-H9200 GASKET-EXHAUST
- 20020-H9200 TUBE ASSY-EXHAUST FRONT [to convertor] NICHIRA A15E F5
- 20020-H9210 TUBE ASSY-EXHAUST FRONT [to convertor] NICHIRA A15E F4
- 20602-P6700 NUT [for pipe to manifold] (3) $4.53 USD
  - replaced 20602-F1700 NUT

The sheet-metal cover over the manifold:

16590-H9201 COVER ASSY-EXHAUST MANIFOLD A14E
16590-H9260 COVER ASSY-EXHAUST MANIFOLD A15E

The tube is for EGR, and bolts to the bottom of the intake manifold

Intake

Port size

27x32 mm with injection cutout of extending up to 40mm
compare to standard A14: 28x34
Port sizes on the same manifold vary a bit

14003-H9200 MANIFOLD-INTAKE A14E
14003-H9254 MANIFOLD-INTAKE A15E

Be sure to port match, as ports can vary.
Black shows the gasket opening.

On the bottom of the intake manifold is the water hose. It connects to the front block water tube.

Water hose is "E" in this photo

14052-H9200 HOSE-WATER
- 08723-12000 CLAMP (2)

Throttle Body

16118-H9200 CHAMBER ASSY-THROTTLE A14E -7909 (to Sep. 1979)
16118-H9201 CHAMBER ASSY-THROTTLE A14E 7909- (from 9 1979)
16118-H9260 CHAMBER ASSY-THROTTLE A15E
16122-N1400 BOLT-CHAMBER A14E (4)
- 08915-13800 WASHER (4)
16175-H9200 GASKET-THROTTLE RETURN [Throttle body]
22620-W7060 SENSOR ASSY-ACCELE [throttle angle sensor]
- 08310-40814 SCREW (2)

Much larger than stock, a CA20 throttle body will bolt on:

On bottom of throttle body:

16484-H9200 VALVE-SERVO
- 22156-85056 WASHER-SPRING
- 16485-U9800 SCREW
- 16599-N3600 CAP-CONNECTOR

16160-H9200 SPRING-THROTTLE RETURN
16182-H7820 DASHPOT ASSY TO 8004
16258-H9200 BRACKET-DASHPOT

16376-H9200 BRACKET-ACCEL CABLE
- 08360-61214 SCREW

Idle Air Bypass

Nissan calls this the Air Regulator. It adjusts the idle speed.

22660-H9205 REGULATOR-AIR ASSY
- 08710-61622 BOLT (2)
14060-H9200 HOSE-3 WAY CONNECTOR TO AIR REGULATOR
- 16439-N4202 CLAMP-HOSE
- 08723-12000 CLAMP
14061-H9200 HOSE-AIR REGULATOR TO CONNECTOR
- 16439-N4202 CLAMP-HOSE
- 08723-12000 CLAMP
14875-A7700 CONNECTOR-VACUUM HOSE

Injectors

The dropping resistor is located in the left hood ledge area forward of the strut of the B310.

22698-N4202 RESISTOR-DROPPING $60.65 USD
- 01451-00171 SCREW (2)

Injector Assembly

16603-N7616 INJECTOR $133.33 USD
- includes:
  - 16449-Y8000 HOSE-INJECTOR L=53 -7909 $14.23 USD
  - 16604-N7615 HOSE-INJECTOR 7910- $14.82 USD
  - 16439-53A00 CLAMP-HOSE $2.38 USD
    - replaced 16439-N4710
- Replaced:
- 16603-Y8005 INJECTOR ASSY -7804 L=53
- 16603-N7600 INJECTOR ASSY 7805-7909 JECS L=51
- 16603-N7610 INJECTOR ASSY 7910- DKC L=51
- 16603-N7660 INJECTOR ASSY 7910- BOSCH L=51
- 16603-V0100 INJECTOR ASSY 7910- JECS L=51

16612-N8500 HOLDER-INJECTOR [lower] 7910- $6.33 USD
- replaced 16612-N4200 HOLDER-INJECTOR -7909
16610-N1400 HOLDER-INJECTOR U $7.22 USD
- 08310-53012 SCREW
- 08915-13510 WASHER
- 16635-N1400 RUBBER-INSULATOR INJECTOR $2.22 USD
- 16636-N1400 RUBBER-INSULATOR INJECTOR $2.22 USD

Block Ventilation

Uses a special rocker cover, with the breather tube near the front.

The rocker cover connects to the top fitting on the throttle body.

13264-H9200 COVER ASSY-VALVE ROCKER -7909
13264-H9201 COVER ASSY-VALVE ROCKER 7910-

The PCV bolts to the back end of the plenum, and connects by hose to the normal block breather tube.
Fitting "A" in this photo:

Control

The ECU is located in the left kick panel area of the B310.

22611-H9202 UNIT ASSY-CONTROL A14E
- superceded 22611-H9201
22611-H9265 UNIT ASSY-CONTROL A15E

The air cleaner and flow meter is bolted to the left front corner in the B310.

16578-H9200 HOSE ASSY-AIR DUCT [from flow meter to throttle body]
- 08723-19000 CLAMP
- 08723-17300 CLAMP
22680-H9200 METER ASSY-AIR FLOW
- 08363-62038 BOLT (4) [fixing air cleaner L-section to flow meter]
- 22682-H9200 BRACKET-AIR FLOW METER
  - 08363-61238 BOLT
  - 08360-81414 BOLT

Air Duct

62860-H9201 DUCT AIR [goes across radiator, above the engine fan]

Air Cleaner

16500-H9200 CLEANER ASSY-AIR
16546-N4210 Filter Air $9.58 USD
- replaced 16546-N4200 ELEMENT ASSY
16536-N4201 PACKING [air cleaner housing gasket] $13.10 USD
16516-N4200 BOLT-CENTER [wing nut] [fixing top cover]
08363-61638 BOLT [fixing bottom pan]
air induce valve
- 14856-H9200 VALVE ASSY-RELIEF WITH CASE
  - includes 14845-N8000 VALVE ASSY-AIR INDUCE
- 16597-G2100 FILTER ASSY [for air induction valve] $12.12 USD
08363-61638 BOLT (2) [fixing L-section to fender]
16558-N6910 GASKET [fixing air cleaner bottom to L-section] $3.55 USD
- 08310-51614 BOLT (10)

Fuel Piping

17520-H9203 TUBE ASSY-FUEL
- 08360-81412 BOLT (2)
- 08915-13810 WASHER (2)
- 16443-N7615 HOSE FUEL L=85
- 16440-U8715 TUBE-FUEL RETURN
M: Fuel inlet
N: Fuel outlet
O: 22660-N4700 REGULATOR ASSY-PRESSURE [fuel]
- 16443-N4710 HOSE-FUEL (2)
  - 16439-N4710 CLAMP-HOSE (4)
- 02141-31700 TUBE-VACUUM PRESSURE REGULATOR -7909 L=31 S/# B2318-73002
- 22323-W7504 TUBE-VACUUM PRESSURE REGULATOR 7910- L=170 S/# B2320-Y4000
- 01552-00481 CLAMP-EGI HARNESS A15E
- 24220-89985 CLAMP-EGI HARNESS A14E -7909
- 22472-M7000 CLAMP-EGI HARNESS A14E 7910-

Fuel Pump

17011-P7211 PUMP ASSY-FUEL $286.12 USD
- replaced 17011-N4205 PUMP ASSY-FUEL A15E
- replaced 17011-Y8000 PUMP ASSY-FUEL A14E
17012-F2001 BRACKET-FUEL PUMP $25.70 USD
22675-N4205 Damper Diaphram $110.53 USD
- replaced 22675-N4200 DAMPER-FUEL
- 22676-H9200 BRACKET-FUEL DAMPER
16420-E0100 SPACER-FUEL PUMP [blank-off plate] $16.10 USD
- 00915-13610 WASHER (2)
- 08120-61210 BOLT (2)
16400-Q0800 STRAINER ASSY-FUEL [fuel filter] $15.38 USD
- 16419-H9200 BRACKET ASSY-FUEL STRAINER
  - 01461-00061 SCREW

EGR

EGR passage is a large area on the bottom side of the inlet runners.

14711-H9200 PASSAGE-EGR -0709 [not shown in photo above]
14711-H9201 PASSAGE-EGR 7910- [not shown in photo above]
14720-H9200 GASKET-EGR PASSAGE
- 08110-61262 BOLT
- 08120-61662 BOLT
- 08915-43610 WASHER
  - 08915-13610 WASHER-LOCK
  - 08911-10610 NUT

fitting into passage:

A front:
- 14890-U7800 VALVE-THERMAL VACUUM A15E 8011- $22.90 USD
- 22120-H8900 SWITCH-TEMPERATURE WATER A14E -8010 $73.67 USD
- 22636-N4200 GASKET-WATER TEMPERATURE $1.07 USD
B rear upper:
- 22630-N4200 SENSOR ASSY-TEMPERATURE $29.10 USD
C rear lower:
- 14890-U7800 VALVE-THERMAL VACUUM A15E 8011-
EGR VALVE
- 14710-M5961 VALVE ASSY-EGR CONTROL A143 -7909
- 14710-M7300 VALVE ASSY-EGR CONTROL A14E 7910-8010
  - 14710-M7301 VALVE ASSY-EGR CONTROL A15E
  - 14719-N3301 GASKET-EGR CUT VALVE

The exhaust manifold has the EGR tube:

14710-H9200 TUBE ASSY-EGR A14E -7812
14710-H9201 TUBE ASSY-EGR A14E 7901-
14710-H9260 TUBE ASSY-EGR A15E
14875-M2260 CONNECTOR-VACUUM STRAIGHT [fits in EGR passage, and connect to the tube]

EAI - stainless pipe at front (right side of photo)

14821-H9200 PIPE ASSY-EAI A14E -7909
14821-H9201 PIPE ASSY-EAI A14E 7910-
- 14861-H9200 HOSE AIR [connects to stainless pipe]
  - 08723-13200 CLAMP (2)
  - 14824-H9200 BRACKET ASSY-EAI PIPE -7909
  - 14824-H9201 BRACKET ASSY-EAI PIPE 7910-
    - 08360-61414 SCREW
14821-H9201 PIPE ASSY-EAI A15E
- 14824-H9201 BRACKET ASSY-EAI PIPE

VVT

VVT - Venturi Vacuum Transducer (V.V.T.) modifies the EGR vacuum signal. The VVT Valve takes venturi vacuum and exhaust manifold back pressure, and outputs the EGR signal. This systems has finer control over the EGR than earlier systems.

An on/off vacuum switch has an input of intake vacuum, and activates on the high vacuum during deceleration. The output is used cut to power to the vacuum switch valve.

2-port thermal vacuum valve closes when the engine is cold, so no vacuum can flow to the EGR valve.

14771-H9215 VALVE ASSY-VVT
- 14755-H9200 TUBE-PASSAGE TO BPT L=110 S/#B2318-N3300 [small rubber hose]
  - BPT = Back Pressure Transducer?
- 14750-H9201 TUBE ASSY-VVT CONTROL [small metal connector to exhaust]
14956-H7206 VALVE ASSY-SOLENOID EGR CUT A15E
14957-H7200 BRACKET-VACUUM SWITCH -7911
14775-H9201 BRACKET-VVT VALVE -7909
14775-H9202 BRACKET-VVT VALVE 7910-7911
14775-H9203 BRACKET-VVT VALVE 7912- [large bracket]