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Prince G engine#G-11

{{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=L16 (G-16)
L18 (G-18)
S20 (GR-8)

|configuration= Inline 4 & 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=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={{convert|46-223|PS|kW bhp|0|abbr=on}}

|torque={{convert|10-19.9|kgm|Nm lbft|0|abbr=on}}

}}

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 {{Convert|1862|cc|L|1|order=flip|abbr=on}} 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 {{convert|24|hp|PS|0|abbr=on}}. The engine suffered excessive vibration and noise issues and was replaced with the FG4C engine.{{cite web|url=http://www.earlydatsun.com/princedpsk.html|title=1956 Prince DPSK & CPSK|website=Early Datsun}}

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.

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 (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 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:

=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 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 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=

File:Prince G1 Engine.jpg]]

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 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:

=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 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:

=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'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:

=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:

=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 L18.

Applications:

=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 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=

File:PrinceG7.jpg

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 Skylines 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 carburetors 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 straight six engine.{{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}} 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:

=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

File:Nissan_GR-8_Engine2.jpg race car]]

{{Convert|1996|cc|L|1|disp=flip|abbr=on}} inside diameter x stroke: {{Convert|82x63|mm|in|2|abbr=on}}, DOHC

  • compression ratio 11.0:1
  • maximum output (gross) more than {{convert|200|PS|kW bhp|0|abbr=on}} @ 8400 rpm{{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}}
  • maximum torque (gross) {{convert|17.5|kgm|Nm lbft|0|abbr=on}} @ 6400 rpm

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

| colspan=2 | 3× Weber 42 DCOE

| 3× Weber 45 DCOE

| colspan=2 | Lucas fuel injection

Power (gross){{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}}

| {{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. It used 4 valves per cylinders and DOHC, used 3 Weber carburetors 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. The GR-8 used in the R380-III featured mechanical fuel injection.

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

=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:

See also

References

{{Reflist}}

{{Nissan}}

G

Category:Straight-four engines

Category:Straight-six engines

Category:Gasoline engines by model