imported>Meltdown627: the G-20 was not replaced by the L26

2025-02-11T20:42:07Z

the G-20 was not replaced by the L26

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{{Distinguish|Nissan G engine}}
{{More references|date=November 2018}}
{{Infobox automobile engine
|name=Prince G engine
|image=1963 Prince G7 engine left.jpg
|manufacturer=[[Prince Motor Company]]
|production=1955-1975
|predecessor=FG4A
|successor=[[Nissan L engine#L16|L16]] (G-16) [[Nissan L engine#L18|L18]] (G-18) [[Nissan S20 engine|S20]] (GR-8)
|configuration= [[Inline-four engine|Inline 4]] & [[Straight-six engine|Inline 6]]
|displacement=Four-cylinder: {{Convert|1484|cc|L|1|order=flip|abbr=on}} {{Convert|1593|cc|L|1|order=flip|abbr=on}} {{Convert|1815|cc|L|1|order=flip|abbr=on}} {{Convert|1862|cc|L|1|order=flip|abbr=on}} {{Convert|1990|cc|L|1|order=flip|abbr=on}} Six-cylinder: {{Convert|1988|cc|L|1|order=flip|abbr=on}} {{Convert|2494|cc|L|1|order=flip|abbr=on}}
|bore={{Convert|75|mm|in|2|abbr=on}} {{convert|80|mm|in|2|abbr=on}} {{convert|82|mm|in|2|abbr=on}} {{Convert|84|mm|in|2|abbr=on}} {{Convert|89|mm|in|abbr=on}}
|stroke={{convert|63|mm|in|2|abbr=on}} {{convert|70.2|mm|in|2|abbr=on}} {{Convert|80|mm|in|2|abbr=on}} {{Convert|84|mm|in|2|abbr=on}} {{Convert|85|mm|in|2|abbr=on}}
|valvetrain=[[Overhead valve engine|OHV]] (GA30, GA4, GB30) [[SOHC]] (all except GR-8, GA30, GA4, GB30) [[DOHC]] (GR-8)
|fueltype=[[Gasoline]], [[Diesel engine|Diesel]]
|fuelsystem=[[SU carburetor|SU]] or [[Weber carburetor]]s [[Mechanical fuel injection]]
|coolingsystem=[[Radiator (engine cooling)|Water cooled]]
|compression=8.3:1, 9.3:1, 9.7:1, 11.0:1
|power={{convert|46-223|PS|kW bhp|0|abbr=on}}
|torque={{convert|10-19.9|kgm|Nm lbft|0|abbr=on}}
}}
The '''[[Prince Motor Company|Prince]] G-series''' engine was the company's only [[Inline-four engine|straight-four]] and [[straight-six engine]]s which began production in 1955. A number of variations were made, with both [[Overhead valve|OHV]] and [[OHC]] heads. A diesel four-cylinder with {{Convert|1862|cc|L|1|order=flip|abbr=on}} was also built, called the '''D-6'''. The G series was used in the [[Nissan Skyline|Skyline]], the [[Nissan Laurel|Laurel]], and the [[Nissan Gloria|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 {{convert|24|hp|PS|0|abbr=on}}. The engine suffered excessive vibration and noise issues and was replaced with the FG4C engine.<ref name=DPSK>{{cite web|url=http://www.earlydatsun.com/princedpsk.html|title=1956 Prince DPSK & CPSK|website=Early Datsun}}</ref>

==Flat-4==
Prince developed the FG4C, a flat-four displacing 599 cc and producing {{convert|38|hp|PS|0|abbr=on}}, as a replacement for the FG2D. The FG4C was used in the 1957 CPSK concept.<ref name=DPSK/>

==Straight-4==

===FG4A-10===
{{Convert|1484|cc|L|1|order=flip|abbr=on}} diameter X stroke: {{Convert|75x84|mm|in|2|abbr=on}}, OHV

*Maximum output ([[Horsepower#SAE gross power|gross]]) {{convert|46|PS|kW bhp|0|abbr=on}} @ 4000 rpm
*Maximum torque (gross) {{convert|10|kgm|Nm lbft|0|abbr=on}} @ 2000 rpm
*1952-1955 [[Prince Sedan]] AISH
*1952-1954 Prince Truck AFTF

===FG4A-20===
{{Convert|1484|cc|L|1|order=flip|abbr=on}} diameter X stroke: {{Convert|75x84|mm|in|2|abbr=on}}, OHV

*Maximum output (gross) {{convert|53|PS|kW bhp|0|abbr=on}} @ 4000 rpm
*Maximum torque (gross) {{convert|10.4|kgm|Nm lbft|0|abbr=on}} @ 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===
{{Convert|1484|cc|L|1|order=flip|abbr=on}} diameter X stroke: {{Convert|75x84|mm|in|2|abbr=on}}, OHV

*Maximum output (gross) {{convert|61|PS|kW bhp|0|abbr=on}} @ 4000 rpm
*Maximum torque (gross) {{convert|10.75|kgm|Nm lbft|0|abbr=on}} @ 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===
{{Convert|1484|cc|L|1|order=flip|abbr=on}} diameter X stroke: {{Convert|75x84|mm|in|2|abbr=on}}, OHV

*Maximum output (gross) {{convert|61|PS|kW bhp|0|abbr=on}} @ 4400 rpm
*Maximum torque (gross) {{convert|10.75|kgm|Nm lbft|0|abbr=on}} @ 3200 rpm
* 1957 [[Nissan Skyline#Prince Skyline ALSID-1/ALSID-2/BLRA-3|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===
{{Convert|1484|cc|L|1|order=flip|abbr=on}} diameter X stroke: {{Convert|75x84|mm|in|2|abbr=on}}, OHV

*Maximum output (gross) {{convert|71|PS|kW bhp|0|abbr=on}} @ 4000 rpm
*Maximum torque (gross) {{convert|11.5|kgm|Nm lbft|0|abbr=on}} @ 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 [[Nissan Skyline#Prince Skyline ALSID-1/ALSID-2/BLRA-3|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===
{{Convert|1862|cc|L|1|order=flip|abbr=on}} diameter X stroke: {{Convert|84x84|mm|in|2|abbr=on}}, OHV

*Maximum output (gross) {{convert|81|PS|kW hp|0|abbr=on}} @ 4800 rpm
*Maximum torque (gross) {{convert|14.9|kgm|Nm lbft|0|abbr=on}} @ 3600 rpm
Also known as FG4B-30

Applications:
* 1957-1961 [[Prince Miler]] Van BRVF
* 1958 Prince Miler BRTH-1
* 1959-1960 [[Nissan Gloria|Prince Gloria]] BLSIP-1
* 1960-1961 Prince Gloria BLSIP-2
* 1962 Prince BQTI-2
* 1963 Prince T631

===GB-4===
{{Convert|1862|cc|L|1|order=flip|abbr=on}} diameter X stroke: {{Convert|84x84|mm|in|2|abbr=on}}, OHV

*Maximum output (gross) {{convert|95|PS|kW bhp|0|abbr=on}} @ 4800 rpm
*Maximum torque (gross) {{convert|15.6|kgm|Nm lbft|0|abbr=on}} @ 3600 rpm
Also known as FG4B-40

Applications:
* 1961-1963 [[Nissan Gloria|Prince Gloria]] BLSIP-3
* 1961-1963 [[Nissan Skyline#BLRA-3|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===

[[File:Prince G1 Engine.jpg|thumb|right|Prince G-1 engine of [[Prince Skyway|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 {{Convert|1484|cc|L cuin|1|order=flip|abbr=on}} thanks to an entirely different {{convert|75|by|84|mm|in|2|abbr=on}} 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 [[Overhead valve|OHV]] design and power output was similar to the Nissan G at {{Convert|73|hp|kW PS|0|abbr=on}} and {{Convert|12|kgm|Nm lbft|0|abbr=on}}.

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 [[Nissan Skyline#S50|Prince Skyline]] S50
* 1963-1968 [[Prince Skyway#Second generation|Prince Skyway]] V51 (renamed as "Nissan Prince Skyline Van" in 1966 after the merger with [[Nissan Motors|Nissan]])
* 1965-1966 [[Prince Miler|Prince Light Miler]] T440

===G-2===
The '''G-2''' is a {{convert|1862|cc|L cuin|1|abbr=on|disp=flip}} version used by Prince. Bore and stroke were [[Stroke ratio#Square engine|square]] at {{convert|84|mm|in|2|abbr=on}}, and output was {{Convert|96|hp|kW PS|0|abbr=on}} and {{Convert|15.7|kgm|Nm lbft|0|abbr=on}} 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 [[Nissan Gloria#S40|Prince Gloria]] S40
* 1962-1965 Prince Super Miler T431
* 1963 Prince 1900 Sprint concept
* 1963-1967 [[Prince Clipper]] T631
* 1964-1967 [[Prince Miler|Prince Super Miler]] T441
* 1965 Prince T65

===G-15===
The [[SOHC]] '''G-15''' was a {{convert|1483|cc|L cuin|1|abbr=on|disp=flip}} engine produced in 1967 for the Skyline. Bore and stroke was {{convert|82x70.2|mm|in|2|abbr=on}}. With a 2 barrel carburetor equipped, the engine produced {{Convert|88|PS|kW hp|0|abbr=on}} and {{Convert|12.2|kgm|Nm lbft|0|abbr=on}}. 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 L engine|Nissan's L series]] engine in their design. The [[Nissan G engine|Nissan G]] engine was not related to the Prince engine; the Nissan version was [[Overhead valve engine|OHV]] and slightly smaller displacement. The G-15 was discontinued in 1972 when the C110 Skyline was introduced.

Applications:
* 1967 [[Nissan Skyline#S57|Prince Skyline]] S57D
* 1968-1972 [[Nissan Skyline#C10|Nissan Skyline]] 1500 (C10)

===G-16===
{{Convert|1593|cc|L|1|disp=flip|abbr=on}} inside diameter x stroke: {{Convert|85x70.2|mm|in|2|abbr=on}} mmin, SOHC

*maximum output (gross) {{convert|100|PS|kW bhp|0|abbr=on}} @ 6000 rpm
*Maximum torque (gross) {{convert|13.8|kgm|Nm lbft|abbr=on}} @ 4000 rpm

The G-18 was de-stroked to {{Convert|70.2|mm|in|2|abbr=on}} 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#C110|Nissan Skyline]] 1600 (C110)

===G-18===
The '''G-18''' was a {{Convert|1815|cc|L cuin|1|disp=flip|abbr=on}}. Its {{convert|85|mm|in|2|abbr=on}} bore was the largest in the range (except for the G20 mentioned in the next paragraph), and the {{convert|80|mm|in|2|abbr=on}} stroke gave it good [[oversquare]] dimensions. It was an [[SOHC]] cross flow cylinder head design like the G-15 and produced {{Convert|105|hp|kW PS|0|abbr=on}} and {{Convert|15.9|kgm|Nm lbft|0|abbr=on}}.

This engine was discontinued in 1975 due to tightening emission regulations and replaced with the [[Nissan L engine|L18]].

Applications:
* 1968-1972 [[Nissan Skyline#C10|Nissan Skyline]] 1800 (PC10)
* 1968-1972 [[Nissan Laurel]] C30
* 1972-1975 [[Nissan Skyline#C110|Nissan Skyline]] 1800 (PC110)
* 1972-1975 Nissan Laurel C130

===G-20===

{{Convert|1990|cc|L|1|disp=flip|abbr=on}} inside diameter x stroke: {{Convert|89x80|mm|in|2|abbr=on}}, SOHC

Twin Barrel single Carburetor
*compression ratio 8.3:1
*maximum output (gross) {{convert|110|PS|kW bhp|0|abbr=on}} @ 5600 rpm
*maximum torque (gross) {{convert|16.5|kgm|Nm lbft|0|abbr=on}} @ 3200 rpm

Twin [[SU carburetor]] regular gasoline
*compression ratio 8.3:1
*maximum output (gross) {{convert|120|PS|kW bhp|0|abbr=on}} @ 5800 rpm
*maximum torque (gross) {{convert|17|kgm|Nm lbft|0|abbr=on}} @ 3600 rpm

Twin SU carburetor high octane gasoline
*compression ratio 9.7:1
*maximum output (gross) {{convert|125|PS|kW bhp|0|abbr=on}} @ 5800 rpm
*maximum torque (gross) {{convert|17.2|kgm|Nm lbft|0|abbr=on}} @ 3600 rpm

This engine was only used in the 1968-1975 C30 & C130 [[Nissan Laurel|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 [[Nissan Skyline|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#Japan|Road tax]] to be paid yearly in addition to other Japanese Government mandated expenses.

===G-7===
[[File:PrinceG7.jpg|250px|thumb|right|Prince G-7 engine]]
The '''G-7''' is a straight-6 version displacing {{convert|1988|cc|L cuin|1|disp=flip|abbr=on}}. It was the engine of the ''GT''-model [[Prince Skyline]]s and was an [[OHC]] engine unlike the mainly-OHV family that spawned it. Bore and stroke were square at {{convert|75|mm|in|2|abbr=on}} and power output varied with the carburetor equipped. Plain versions featured a 2 barrel carb and 8.8:1 for {{Convert|106|hp|kW PS|0|abbr=on}} and {{Convert|16|kgm|Nm lbft|0|abbr=on}}, while the 1965 Skyline GT-B used 3 twin-barrel [[Weber carburetor]]s and 9.3:1 compression for {{Convert|127|hp|kW PS|0|abbr=on}} and {{Convert|17|kgm|Nm lbft|0|abbr=on}}. It was influenced by the [[Mercedes-Benz M180 engine|Mercedes-Benz M180 straight six engine]].<ref>{{cite web |title=A brief History of the Nissan Skyline and GT-R -Everything you need to know |url=https://silodrome.com/nissan-skyline-gt-r-history/ |website=Silodrome Gasoline Culture |date=5 June 2019 |publisher=Silodrome |access-date=10 January 2021}}</ref> 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 [[Nissan Gloria#Second generation S40, W40 and S44|Prince Gloria]] S41
* 1965-1968 [[Nissan Skyline#S54|Prince Skyline 2000 GT-A]] S54AE
* 1965-1968 [[Nissan Skyline#S54|Prince Skyline 2000 GT-B]] S54BE (3 Weber 40 DCOE carburetors)
* 1967-1969 [[Nissan Gloria#Third generation A30|Nissan (Prince) Gloria]] PA30

===G7B-R===

{{Convert|1988|cc|L|1|disp=flip|abbr=on}} inside diameter x stroke: {{Convert|75x75|mm|in|2|abbr=on}}

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===
[[File:Prince GR8 engine Nissan Engine Museum.jpg|200px|thumb|right|Prince/Nissan GR-8 engine displayed at Nissan's engine museum]]
[[File:Nissan_GR-8_Engine2.jpg|200px|thumb|right|Prince/Nissan GR-8 engine in a [[Prince R380|R380]] race car]]
{{Convert|1996|cc|L|1|disp=flip|abbr=on}} inside diameter x stroke: {{Convert|82x63|mm|in|2|abbr=on}}, DOHC<ref name=NG-380/>
*compression ratio 11.0:1
*maximum output (gross) more than {{convert|200|PS|kW bhp|0|abbr=on}} @ 8400 rpm<ref name=R380A-I>{{cite web |url=https://www.nissan-global.com/EN/HERITAGE/prince_r380_i.html |title=Prince R380A-I (1966: R380) |website=Nissan Heritage Collection |access-date=19 April 2021}}</ref>
*maximum torque (gross) {{convert|17.5|kgm|Nm lbft|0|abbr=on}} @ 6400 rpm<ref name=R380A-I/>

{|class=wikitable style="font-size:90%;text-align:center;"
|-
|
! R380-I 1965
! R380A-I 1966
! R380A-II 1967
! R380A-III 1968
! R380A-III 1969
|-
! Fuel delivery<ref name=NG-380/>
| colspan=2 | 3× Weber 42 DCOE
| 3× Weber 45 DCOE
| colspan=2 | Lucas fuel injection
|-
! Power (gross)<ref name=NG-380>{{cite web |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}}</ref>
| {{convert|200|PS|kW bhp|0|abbr=on}} @ 8000 rpm
| over {{convert|200|PS|kW bhp|0|abbr=on}} @ 8000 rpm
| {{convert|220|PS|kW bhp|0|abbr=on}} @ 8500 rpm
| {{convert|245|PS|kW bhp|0|abbr=on}} @ 8400 rpm
| {{convert|250|PS|kW bhp|0|abbr=on}} @ 8400 rpm
|-

|}

Racing engine used in the [[Prince R380]] and Nissan R380-II, based on the G7 engine.<ref name=R380A-I/> It used 4 valves per cylinders and [[DOHC]], used 3 [[Weber carburetor]]s model 42DCOE-18, producing a claimed {{Convert|200|hp|kW PS|0|abbr=on}} for the R380 and {{Convert|220|hp|kW PS|0|abbr=on}} for the R380-II.<ref name=NG-380/> The GR-8 used in the R380-III featured [[mechanical fuel injection]].<ref name=NG-380/>

The [[Nissan S20 engine]] was derived from the GR-8.<ref>{{cite web |url=https://japanesenostalgiccar.com/motorsport-nissan-prince-r380/ |title=Motorsport: The Prince R380 |author=Lee, Ken |date=September 8, 2016 |website=Japanese Nostalgic Car |access-date=19 April 2021}}</ref>

===G-11===

The '''G-11''' is another straight-6 OHC version, displacing {{convert|2494|cc|L cuin|1|abbr=on|disp=flip}}. Bore was up to {{convert|84|mm|in|2|abbr=on}} like the G-2 4-cylinder, while stroke remained at {{convert|75|mm|in|2|abbr=on}} as on the G-7. Power output with a 4 barrel carburetor was {{Convert|134|hp|kW PS|0|abbr=on}} with {{Convert|19.9|kgm|Nm lbft|0|abbr=on}} of torque.

Applications:
* 1964-1967 [[Prince Gloria#Second generation S40, W40 and S44|Prince Grand Gloria]] S44P

==See also==
* [[List of Nissan engines]]
* [[Nissan G engine]]

==References==
{{Reflist}}

{{Nissan}}

[[Category:Nissan engines|G]]
[[Category:Straight-four engines]]
[[Category:Straight-six engines]]
[[Category:Gasoline engines by model]]

Prince G engine - Revision history

imported>Meltdown627: the G-20 was not replaced by the L26