From Surf Wiki (app.surf) — the open knowledge base

Prince G engine

Prince G engine

Field	Value
name	Prince G engine
image	1963 Prince G7 engine left.jpg
manufacturer	Prince Motor Company
production	1955-1975
predecessor	FG4A
successor	L16 (G-16)
L18 (G-18)
S20 (GR-8)
configuration	Inline 4 & Inline 6
displacement	Four-cylinder:
1484 cc
1593 cc
1815 cc
1862 cc
1990 cc
Six-cylinder:
1988 cc
2494 cc
bore	75 mm
80 mm
82 mm
84 mm
89 mm
stroke	63 mm
70.2 mm
80 mm
84 mm
85 mm
valvetrain	OHV (GA30, GA4, GB30)
SOHC (all except GR-8, GA30, GA4, GB30)
DOHC (GR-8)
fueltype	Gasoline, Diesel
fuelsystem	SU or Weber carburetors
Mechanical fuel injection
coolingsystem	Water cooled
compression	8.3:1, 9.3:1, 9.7:1, 11.0:1
power	46-223 PS
torque	10-19.9 kgm

L18 (G-18) S20 (GR-8) 1484 cc 1593 cc 1815 cc 1862 cc 1990 cc Six-cylinder: 1988 cc 2494 cc 80 mm 82 mm 84 mm 89 mm 70.2 mm 80 mm 84 mm 85 mm SOHC (all except GR-8, GA30, GA4, GB30) DOHC (GR-8) Mechanical fuel injection The Prince G-series engine was the company's only straight-four and straight-six engines which began production in 1955. A number of variations were made, with both OHV and OHC heads. A diesel four-cylinder with 1862 cc was also built, called the D-6. The G series was used in the Skyline, the Laurel, and the Gloria from the 1950s to the early 1970s.

Note that, prior to its merger with Prince, Nissan also made a G series of engines. These are unrelated engines and are documented at the Nissan G engine page.

The source of the listed information is the corresponding article at Japanese Wikipedia.

Flat-2

In 1956, Prince developed a flat-2 engine, the FG2D, for their DPSK (later CPSK) concept car. It displaced 601 cc and produced 24 hp. The engine suffered excessive vibration and noise issues and was replaced with the FG4C engine.

Flat-4

Prince developed the FG4C, a flat-four displacing 599 cc and producing 38 hp, as a replacement for the FG2D. The FG4C was used in the 1957 CPSK concept.

Straight-4

FG4A-10

1484 cc diameter X stroke: 75x84 mm, OHV

Maximum output (gross) 46 PS @ 4000 rpm
Maximum torque (gross) 10 kgm @ 2000 rpm
1952-1955 Prince Sedan AISH
1952-1954 Prince Truck AFTF

FG4A-20

1484 cc diameter X stroke: 75x84 mm, OHV

Maximum output (gross) 53 PS @ 4000 rpm
Maximum torque (gross) 10.4 kgm @ 2000 rpm
1955-1956 Prince AIPC-1
1955-1956 Prince AIVE-1
1955-1957 Prince Sedan AISH
1955-1956 Prince Truck AFTF
1955-1956 Prince Truck AKTG
1956 Prince BNSJ concept (increased to 1.9L)

FG4A-30

1484 cc diameter X stroke: 75x84 mm, OHV

Maximum output (gross) 61 PS @ 4000 rpm
Maximum torque (gross) 10.75 kgm @ 2000 rpm Renamed GA-30 in 1958

Applications:

1957 Prince AIPC-2
1957 Prince AIVE-2
1957 Prince Sedan AISH-6
1957 Prince Truck AFTF-8
1957 Prince Miler AOTH-1
1957 Prince Miler AOVH-1
1957 Prince ALPE-1
1957 Prince ALVG-1
1957 Prince AKTG-4

GA-30

1484 cc diameter X stroke: 75x84 mm, OHV

Maximum output (gross) 61 PS @ 4400 rpm
Maximum torque (gross) 10.75 kgm @ 3200 rpm
1957 Prince Skyline ALSI-1
1957-1961 Prince Skyline ALSI-2
1957-1958 Prince Truck ALPE
1958-1959 Prince Miler ARTH-1 (New Miler)
1958-1960 Prince Truck AQTI-1

GA-4

1484 cc diameter X stroke: 75x84 mm, OHV

Maximum output (gross) 71 PS @ 4000 rpm
Maximum torque (gross) 11.5 kgm @ 2000 rpm 1959 improvement on the GA-30; also known as FG4A-40
Mechanical similarities with engine used in Subaru 1500

Applications:

1957-1959 Prince Skyway ALVG
1959-1963 Prince Miler ARTH-2
1958 Prince Miler Van ARVH-1
1958-1961 Prince Skyline ALSI-2
1959-1961 Prince Skyway
1959 Prince ALPE-2
1959 Prince ALVG-2
1960 Prince Truck AQTI-2
1962-1964 Prince Light Miler T430

GB-30

1862 cc diameter X stroke: 84x84 mm, OHV

Maximum output (gross) 81 PS @ 4800 rpm
Maximum torque (gross) 14.9 kgm @ 3600 rpm Also known as FG4B-30

Applications:

1957-1961 Prince Miler Van BRVF
1958 Prince Miler BRTH-1
1959-1960 Prince Gloria BLSIP-1
1960-1961 Prince Gloria BLSIP-2
1962 Prince BQTI-2
1963 Prince T631

GB-4

1862 cc diameter X stroke: 84x84 mm, OHV

Maximum output (gross) 95 PS @ 4800 rpm
Maximum torque (gross) 15.6 kgm @ 3600 rpm Also known as FG4B-40

Applications:

1961-1963 Prince Gloria BLSIP-3
1961-1963 Prince Skyline BLSI-3
1959-1962 Prince Miler BRTH-2
1961 Prince Skyline Sport BLRA-3 Coupe & Convertible
1962 Prince Skyline S21
1962 Prince BLPE-3
1962 Prince BLVG-3

G-1

Nissan Prince Skyline 1500 Van Deluxe V51B

The Prince G-1 was the improved GA-4, and was rated at 1.5 L, but displaced 1484 cc thanks to an entirely different 75 by bore and stroke. This undersquare arrangement was similar to the designs Nissan licensed from Austin Motor Company, though this is probably coincidental. This engine was also an OHV design and power output was similar to the Nissan G at 73 hp and 12 kgm.

Applications:

1958-1963 Prince Clipper AQTI
1961-1968 Prince Homer T64/T640
1962-1965 Prince Miler T430
1963 Prince Skyway V51A
1963-1965 Prince Clipper T630
1963-1967 Prince Skyline S50
1963-1968 Prince Skyway V51 (renamed as "Nissan Prince Skyline Van" in 1966 after the merger with Nissan)
1965-1966 Prince Light Miler T440

G-2

The G-2 is a 1862 cc version used by Prince. Bore and stroke were square at 84 mm, and output was 96 hp and 15.7 kgm with a 2 barrel carburetor. It was an improved version of the GB-4 and was introduced in 1962 and was installed in the S40 series Prince Gloria as well as the Clipper and Super Miler commercial vehicles. The G-2 was an OHV design.

Applications:

1962 Prince Skyway P23/V23
1962-1965 Prince Gloria S40
1962-1965 Prince Super Miler T431
1963 Prince 1900 Sprint concept
1963-1967 Prince Clipper T631
1964-1967 Prince Super Miler T441
1965 Prince T65

G-15

The SOHC G-15 was a 1483 cc engine produced in 1967 for the Skyline. Bore and stroke was 82x70.2 mm. With a 2 barrel carburetor equipped, the engine produced 88 PS and 12.2 kgm. With a crossflow cylinder head, a V-shaped canted valve arrangement and a multi-spherical combustion chamber design, the G-15 was the most technologically advanced Japanese car engine of its day, eclipsing even Nissan's L series engine in their design. The Nissan G engine was not related to the Prince engine; the Nissan version was OHV and slightly smaller displacement. The G-15 was discontinued in 1972 when the C110 Skyline was introduced.

Applications:

1967 Prince Skyline S57D
1968-1972 Nissan Skyline 1500 (C10)

G-16

1593 cc inside diameter x stroke: 85x70.2 mm mmin, SOHC

maximum output (gross) 100 PS @ 6000 rpm
Maximum torque (gross) 13.8 kgm @ 4000 rpm

The G-18 was de-stroked to 70.2 mm to form the G-16. Adapting the engine to more stringent US emissions was deemed too expensive, and it was replaced by the Nissan L16 engine in 1975.

Applications:

1972-1975 Nissan Skyline 1600 (C110)

G-18

The G-18 was a 1815 cc. Its 85 mm bore was the largest in the range (except for the G20 mentioned in the next paragraph), and the 80 mm stroke gave it good oversquare dimensions. It was an SOHC cross flow cylinder head design like the G-15 and produced 105 hp and 15.9 kgm.

This engine was discontinued in 1975 due to tightening emission regulations and replaced with the L18.

Applications:

1968-1972 Nissan Skyline 1800 (PC10)
1968-1972 Nissan Laurel C30
1972-1975 Nissan Skyline 1800 (PC110)
1972-1975 Nissan Laurel C130

G-20

1990 cc inside diameter x stroke: 89x80 mm, SOHC

Twin Barrel single Carburetor

compression ratio 8.3:1
maximum output (gross) 110 PS @ 5600 rpm
maximum torque (gross) 16.5 kgm @ 3200 rpm

Twin SU carburetor regular gasoline

compression ratio 8.3:1
maximum output (gross) 120 PS @ 5800 rpm
maximum torque (gross) 17 kgm @ 3600 rpm

Twin SU carburetor high octane gasoline

compression ratio 9.7:1
maximum output (gross) 125 PS @ 5800 rpm
maximum torque (gross) 17.2 kgm @ 3600 rpm

This engine was only used in the 1968-1975 C30 & C130 Laurel, and was discontinued in 1975 due to tightening emission regulations.

Straight-6

Prince used a straight-6 version of the G family in their famous Skyline cars. All of the Prince straight-6 engines used single overhead cam heads. Engine displacement was kept below 2000cc to limit the amount of Road tax to be paid yearly in addition to other Japanese Government mandated expenses.

G-7

Prince G-7 engine

The G-7 is a straight-6 version displacing 1988 cc. It was the engine of the GT-model Prince Skylines and was an OHC engine unlike the mainly-OHV family that spawned it. Bore and stroke were square at 75 mm and power output varied with the carburetor equipped. Plain versions featured a 2 barrel carb and 8.8:1 for 106 hp and 16 kgm, while the 1965 Skyline GT-B used 3 twin-barrel Weber carburetors and 9.3:1 compression for 127 hp and 17 kgm. It was influenced by the Mercedes-Benz M180 straight six engine. The intake and exhaust manifolds are on the left side of the engine because Japanese drivers sit on the right side and the steering column would interfere, while the Mercedes-Benz engine places the intake and exhaust on the right side due to left hand driving conditions.

Applications:

1963-1967 Prince Gloria S41
1965-1968 Prince Skyline 2000 GT-A S54AE
1965-1968 Prince Skyline 2000 GT-B S54BE (3 Weber 40 DCOE carburetors)
1967-1969 Nissan (Prince) Gloria PA30

G7B-R

1988 cc inside diameter x stroke: 75x75 mm

An improvement on the G7 using a cross-flow cylinder head and was converted into racing use during 1965 - 1966 in the S54 Skyline GT used for racing. Was not commercially available.

GR-8

Prince/Nissan GR-8 engine displayed at Nissan's engine museum

1996 cc inside diameter x stroke: 82x63 mm, DOHC

compression ratio 11.0:1
maximum output (gross) more than 200 PS @ 8400 rpm
maximum torque (gross) 17.5 kgm @ 6400 rpm

R380-I
1965	R380A-I
1966	R380A-II
1967	R380A-III
1968	R380A-III
1969	Fuel delivery	url=https://www.nissan-global.com/EN/HERITAGE/short_story/en_p59-01.html	title=The R380's international speed records	publisher=Nissan Global	access-date=19 April 2021}}
3× Weber 42 DCOE	3× Weber 45 DCOE	Lucas fuel injection
200 PS @ 8000 rpm	over 200 PS @ 8000 rpm	220 PS @ 8500 rpm	245 PS @ 8400 rpm	250 PS @ 8400 rpm
200 PS @ 8000 rpm	over 200 PS @ 8000 rpm	220 PS @ 8500 rpm	245 PS @ 8400 rpm	250 PS @ 8400 rpm--

Racing engine used in the Prince R380 and Nissan R380-II, based on the G7 engine. It used 4 valves per cylinders and DOHC, used 3 Weber carburetors model 42DCOE-18, producing a claimed 200 hp for the R380 and 220 hp for the R380-II. The GR-8 used in the R380-III featured mechanical fuel injection.

The Nissan S20 engine was derived from the GR-8.

G-11

The G-11 is another straight-6 OHC version, displacing 2494 cc. Bore was up to 84 mm like the G-2 4-cylinder, while stroke remained at 75 mm as on the G-7. Power output with a 4 barrel carburetor was 134 hp with 19.9 kgm of torque.

Applications:

1964-1967 Prince Grand Gloria S44P

References

References

"1956 Prince DPSK & CPSK".
(5 June 2019). "A brief History of the Nissan Skyline and GT-R -Everything you need to know". Silodrome.
"Prince R380A-I (1966: R380)".
"The R380's international speed records". Nissan Global.
Lee, Ken. (September 8, 2016). "Motorsport: The Prince R380".

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

nissan-engines straight-four-engines straight-six-engines gasoline-engines-by-model

Want to explore this topic further?

Ask Mako anything about Prince G engine — get instant answers, deeper analysis, and related topics.

Research with Mako

Free with your Surf account

Content sourced from Wikipedia, available under CC BY-SA 4.0.

This content may have been generated or modified by AI. CloudSurf Software LLC is not responsible for the accuracy, completeness, or reliability of AI-generated content. Always verify important information from primary sources.