FJ20
 

Engine Specs

FJ20 Related Tech Articles & Engine Manuals:
FJ20ET Engine Manual
FJ20E Components
FJ20ET DR30 Skyline
R33 Skyline turbocharger install onto a FJ20ET
How to get rid of top chain rattle forever!
Engine and Driveline Oil Tech
FJ20ET Wiring Diagram
FJ20ET DR30 Wiring Diagram
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Nissan Factory Rated Power & Torque Figures:
Model
Engine
Power(PS/hp/kW)
Torque(kg-m/Nm)
DR30 RS
 FJ20E
150/148/110@6400
18.5/184@4800
DR30 RS-TURBO
FJ20ET
190/188/140@6400
23.0/235@4800
DR30 RS-TURBO C
FJ20ET 
(Intercooled)
205/203/151@6400
25.0/255@4400
S110 RS
FJ20E
150/148/110@6400
18.5/184@4800
S12 RS
FJ20E
150/148/110@6400
18.5/184@4800
S12 RS-X (early model)
FJ20ET
190/188/140@6400
23.0/235@4800
S12 RS-X (later model)
CA18DET 
175/173/129@6400
23.0/235@4000
240RS (early model)
FJ24
240/238/177@7200
24.0/240@6000
240RS (later model)
FJ24
279/277/207@8000
264@6200 rpm
These are Nissans Motors Japan official catalogue quoted power figures.
Thanks to Ken for the FJ20 engine spec catalogue information.
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Automatically Convert Power and Torque figures:
KEY
PS (Pferdestarke) = BLACK
HP (Horsepower) = BLUE
KW (Kilowatts) = RED
= 

Above: DR30 FJ20ET in Group A DR30 Skyline

Left: S12 FJ20ET in Datsun1600
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FJ20E, FJ20ET & FJ24 Engine Specifications:
- Thanks to Ben D for collating this great FJ20 Engine Specification  info in this Table.
& Thanks to Michael S for the extra FJ24 info.
-
FJ 20 E
FJ 20 ET
FJ 24
Configuration
Inline 4 cyl, DOHC, 16 valve, fuel injected
Inline 4 cyl, DOHC, 16 valve, fuel injected, turbocharged
Inline 4 cyl, DOHC, 16 valve
Bore 
89 mm
89 mm
92 mm
Stroke
80 mm
80 mm
88 mm
Swept volume
1990 cc
1990 cc
2340 cc
Bore/stroke ratio
0.898
0.898
0.956
Engine weight
?
180kg (incl. accessories and turbo)
?
Compression ratio
9.0 : 1 (or 9.5: 1 Europe Hong Kong, NZ new)
7.5 : 1 or

8 : 1 (i/cooled)
11 : 1
Rated horsepower (torque)
148 hp @ 6400 rpm
(136 ft lb @ 4800 rpm)
188 hp @ 6400 rpm (173 ft lb @ 4800 rpm) or i/cooled, 
203 hp @ 6400 rpm (188 ft lb @ 4400 rpm)
238 hp @ 7200 rpm (72° cam) 
(177 ft lb @ 6000 rpm), or
277 hp @ 8000 rpm (76° cam, factory optional dry sump)
(195 ft lb @ 6200 rpm)
Specific output
74.4 hp / Litre
94.5 hp / L, or
102 hp / L (i/cooled)
101.7 hp / L (72° cam)

118.4 hp / L (76° cam)
BMEP @ max hp
151 psi
192 psi
(207 psi i/cooled)
184 psi (72° cam)

192 psi (76° cam)
BMEP @ max torque
169 psi
215 psi 
(234 psi i/cooled)
187 psi (72° cam)

206 psi (76° cam)
Turbo 
-
Garrett T3, 50 trim compressor, 0.63 A/R turbine (0.48 A/R i/cooled)
-
Factory boost pressure
-
6.5 psi, or
7.5 psi (i/cooled)
-
Conrod length
140 mm c / c
140 mm c / c
140 mm c / c
Conrod weight
Lighter than FJ 20 ET
880 g (raw, unprepped)
?
Crankshaft
Forged, fully counterbalanced
Same as FJ 20 E
Forged, (CM440H steel), fully counterbalanced, nitrided
Main bearing dia.
54.95 mm
54.95 mm
59.95 mm
Big end dia.
49.96 mm
49.96 mm
49.96 mm
Rod/stroke ratio
1.75
1.75
1.59
Piston type
Cast, unslotted, 2 x 1.5 mm compression rings, 1 x 2.75 (3?) mm oil ring
Cast, unslotted, 2 x 1.5 mm compression rings, 1 x 2.75 mm oil ring
Forged, unslotted, 1.2 mm top ring, 1.5 mm second ring, 1 x 2.75 mm oil ring
Top ring placement
4.5 mm from piston crown
6 mm from piston crown
5.7 mm from piston crown
Piston weight
550 g
545 g
500 g (0.5 mm oversize)
Pin height
32 mm
32 mm
28 mm
Piston dish
5 cc , 

(1 cc Europe, HK, NZ)
18 cc or

13 cc (i/cooled)
0 cc , 

(but large valve reliefs)
Piston pin dia.
22 mm
22 mm
23.5 mm
Factory camshafts
8.75 mm lift,

204° duration @ 0.050" lift
8.75 mm lift,

204° duration @ 0.050" 
10.5 mm lift

72° = ?° duration @ 0.050" 

74° = ? ° duration @ 0.050"

76° = ? ° duration @ 0.050"
Factory cam timing (lobe c.)
Inlet 105° BTDC

Exhaust 117° BTDC
Inlet 112° BTDC

Exhaust 110° BTDC
Inlet 100° BTDC

Exhaust 100° BTDC
Fuel injectors
4 x 220 cc/min, 

38 psi fuel pressure reg.
4 x 375 cc/min, 

38 psi fuel pressure reg.
2 x 50 mm Solexi PPH side draft carburettors
Oil pump configuration
Straight cut running at crank speed inside front cover
As per FJ 20 E, but 2 mm wider gears
Dry sump pump factory option driven off crank snout with toothed belt
Oil pump flow
?
More than FJ 20 E !
More than FJ 20 ET ?
Oil pump - recommended max. rpm 
7500 rpm (stock redline)
7500 rpm (stock redline)
over 8000 rpm.
Combustion chamber vol.
49.5 cc
49.5 cc
49.5 cc 
Inlet valve diameter
1.36 in (34.5 mm)
1.36 in (34.5 mm)
36mm
Exhaust valve diameter 
1.18 in (30 mm)
1.18 in (30 mm)
30mm
Inlet valve material
Magnetic head and stem
Magnetic head and stem
non magnetic steam and head, with magnetic tip
Exhaust valve material 
Non- magnetic head and stem, stainless steel ?
Non- magnetic head and stem, stainless steel ?
?
Incl. valve angle
45°
45°
45°
Inlet port area
Approx. 14.5 cm2
Approx. 14.5 cm2
15.5 cm2
Exhaust port area
Approx. 12.3 cm2
Approx. 12.3 cm2
50mm x 32mm
Oxygen sensor
single wire (absent on NZ New cars) 
single wire 
-
Ignition timing (static)
?
?
?
Ignition timing (max)
?
?
(? On boost)
?
.
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This site is created by Turbo Creations  -M Drach 2000/2007.

Information is from  Nissan Motors Japan.
-Thanks to Ken for the FJ20 engine spec catalogue information.
-Thanks toJarrod for the DR30 & FJ20ET Engine Manual's.
-Thanks to Troy for the FJ20E Engine and Wiring Diagrams.
-Thanks to Tim for the FJ20ET Wiring Diagram.
-Thanks to Michael S for the FJ24 info.

Information for the above article has been researched from many sources including,Nissan Motorsports, Nissan Motors Japan, Australian Touring Cars, Option2 magzine, Nissan related websites, World Ralllying and thanks to the many FJ20.com readers and contributers.
We welcome any reader input for the above information and are always updating the site.-Regards FJ20.com Webmaster.