The Prince G-series engine was the company's straight-4 and straight-6 line produced in the 1950s and 1960s. A number of variations were made, with both OHV and OHC heads. The G series was used in the Skyline and Gloria and other Princes in the 1960s.

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.

Straight-4

G-1

The Prince G-1 (also called the GA-4) was also rated at 1.5 L, but displaced 1.5 L (1484 cc/90 in³) thanks to an entirely different 75 mm by 84 mm 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 (54.4 kW) and 87 ft.lbf (118 Nm).

Applications:

• 1955-1957 Prince Skyline ALSIS-1 (GA-4)
• 1957-1981 Prince Skyline ALSI-2 (GA-4)
• 1961-1967 Prince Skyline S50
• Prince Miler Light T-430/T440
• Prince Homer T64

G-2

The G-2 (also called the GB-30) is a 1.9 L (1862 cc/113 in³) version used by Prince. Bore and stroke were square at 84 mm, and output was 96 hp (72 kW) and 113.5 ft.lbf (154 Nm) with a 2bbl carburetor.

Applications:

• 1955 Prince Skyline Deluxe ALSID (GB-30)
• 1961 Prince Skyline Sport BLRA-3 (GB-30)
• 1961-1962 Prince Gloria BLSIP-2 (GB-30)
• 1961-1966 Prince Gloria S40-E
• Prince Miler Super T-431/T-442
• Prince Clipper T631

G-15

The SOHC G-15 was a 1.5 L (1483 cc/90 in³) engine produced in 1967 for the Skyline. Bore was 80 mm and stroke was 70.2 mm. With a 2bbl carburetor equipped, the engine produced 94 hp (70 kW) and 96 ft.lbf (130 Nm).

Applications:

• 1967 Prince Skyline C10

G-18

The G-18 was a 1.8 L (1815 cc/110 in³) variant. Its 85 mm bore was the largest in the range, and the 80 mm stroke gave it good oversquare dimensions. It was an SOHC design like the G-15 and produced 105 hp (78 kW) and 108.5 ft.lbf (147 Nm).

Applications:

• Prince Laurel C30

Straight-6

Prince used a straight-6 version of the G family in their famous Skyline cars. All of the Prince engines used single overhead cam heads.

G-7

The G-7 is a straight-6 version displacing 2 L (1988 cc/121 in³). 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 2bbl carb and 8.8:1 for 106 hp (79 kW) and 116 ft.lbf (157 Nm), while the 1965 Skyline GT-B used 3 2bbl carbs and 9.3:1 compression for 127 hp (95 kW) and 123 ft.lbf (166.8 Nm).

Applications:

• 1961 Prince Gloria S41
• 1965-1968 Prince Skyline GT-A S54AE
• 1965-1968 Prince Skyline GT-B S54BE (3x2bbl)
• 1967 Prince Gloria PA30
• 1967 Prince Skyline GT GC10

G-11

The G-11 is another straight-6 OHC version, displacing 2.5 L (2494 cc/152 in³). Bore was up to 84 mm like the G-2, while stroke remained at 75 mm as on the G-7. Power output with a 4bbl carburetor was 134 hp (100 kW) with 144 ft.lbf (195 Nm) of torque.

Applications:

• 1961-1966 Prince Gloria S41
• Prince Gloria S44

See also

• List of Nissan engines
• Nissan G engine