Curtiss, Lawrance and Wright Specifications, 1913 ~ 1940


The Curtiss-Wright conglomerate traces its roots to the Wright Brothers, via the Wright-Martin Corporation (which manufactured Hispano-Suiza engines under license during WW1), to the Wright Aeronautical Corporation (WAC), formed as Wright-Martin was dissolved in 1920. In 1923, the U.S. Navy essentially forced WAC to acquire the Lawrance Aero Engine Corporation, a maker of air-cooled engines. The Curtiss Aeroplane and Motor Corporation engine division merged with WAC to become the Wright Aeronautical Division of Curtiss-Wright in 1930.

Engines described below are representative of important experimental models, as well as significant improvements in the various production series. Mouse over the engine make and model for additional details.

Dates, powers and weights are also representative. Please consult appropriate specific model specifications for more detail.

Type Key: I = Inverted; L = Inline; O = Opposed; R = Radial; V = Vee

A version of this page in the Member's Section has over 200 high resolution images, with at least one for each engine listed below.


Engine Make and Model Year(s) Cooling Type Power
(hp)
RPM Weight
(lb)
Specific
Weight
(hp/lb)
Bore
(in)
Stroke
(in)
Displacement
(in³)
Curtiss C-4 1913 Air L-4 25 1800 110 0.23 3.625 4.000 165.13
Curtiss H or K 1914 Water L-4 40 1500 175 0.23 4.000 5.000 251.33
Curtiss S 1915 Water L-6 60 1600 245 0.24 4.000 5.000 376.99
Curtiss OX 1915 Water V-8 90 1200 390 0.23 4.000 5.000 502.65
Curtiss V2 1916 Water V-8 200 1400 690 0.29 5.000 7.000 1099.56
Curtiss AB 1917 Water V-12 300 2250     4.000 5.000 753.98
Curtiss V-3 1917 Water V-8 160 1400     5.000 7.000 1099.56
Lawrance A-3 1917 Air O-2 28 1400 148 0.19 4.000 6.000 150.80
Wright K-2 1917 Water V-8 300            
Curtiss K-12 1918 Water V-12 400 2500 680 0.59 4.500 6.000 1145.11
Curtiss K-6 1918 Water L-6 150 1700 400 0.38 4.500 6.000 572.56
Curtiss C-12 1919 Water V-12 400 2250 705 0.57 4.500 6.000 1145.11
Curtiss C-6 1919 Water L-6 160 1750 420 0.38 4.500 6.000 572.56
Curtiss C-6 1919 Water L-6 160 1750 420 0.38 4.500 6.000 572.56
Lawrance L-2 1919 Air R-3 56.5 1600 147.4 0.38 4.250 5.250 223.43
Lawrance L-4 1923 Air R-3 60 1800 175 0.34 4.250 5.250 223.43
Wright D-1 1920 Water L-6 350 1350 1320 0.27 7.000 8.000 1847.26
Wright H-2 1920 Water V-8 320 1800 629 0.51 5.511 5.905 1126.84
Lawrance R-1 1919 Air R-9 147 1600 428 0.34 4.250 5.250 670.30
Lawrance J-1 1920 Air R-9 200 1800 476 0.42 4.500 5.500 787.26
Wright R-1 1920-1923 Air R-9 350 1800 884 0.40 5.625 6.500 1453.75
Curtiss CD-12 1921 Water V-12 325 1800 723 0.45 4.500 6.000 1145.11
Curtiss D-12 1922 Water V-12 400 2000 660 0.61 4.500 6.000 1145.11
Wright E-4 Tempest 1922-1923 Water V-8 200 1800 485 0.41 4.720 5.110 715.29
Wright T-2 Tornado 1922-1923 Water V-12 525 1800 1150 0.46 8.750 6.250 4509.90
Wright T-3 Tornado 1923 Water V-12 675 2000 1160 0.58 5.750 6.250 1947.54
Lawrance J-2 1923 Air R-9 250 1800     4.875 5.250 881.94
Curtiss R-1454 1924 Air R-9 400 1700 736 0.54 5.625 6.500 1453.75
Wright J-3 1924 Air R-9 200 1800     4.500 5.500 787.26
Wright Type 4 1924 Water V-8 390 2000 620 0.63 5.511 5.905 1126.84
Wright T-3A 1924-1925 Water V-12 525 1800 1125 0.47 5.750 6.125 1908.59
Wright J-4 Whirlwind 1924 Air R-9 200 1800 475 0.42 4.500 5.500 787.26
Wright J-4B Whirlwind 1925 Air R-9 200 1800 432 0.46 4.500 5.500 787.26
Wright J-5 Whirlwind 1925-1926 Air R-9 200 1800 508 0.39 4.500 5.500 787.26
Wright P-1 1925 Air R-9 406 1650 812 0.50 6.000 6.500 1654.05
Wright P-2 1925-1926 Air R-9 435 1800 837 0.52 6.000 6.500 1654.05
Curtiss V-1400 1925 Water V-12 510 2100 660 0.77 4.875 6.250 1399.91
Wright TM-1 Typhoon 1925 Water V-12 500 1900     5.750 6.250 1947.54
Wright EM-1 Huricane 1925-1926 Water V-8 240 2300     4.500 5.125 652.08
Wright R-1200 Simoon 1925-1926 Air R-9 325 1900 640 0.51 5.500 5.500 1176.04
Wright-Morehouse WM-80 1926 Air O-2 29 2500 89 0.33 3.750 3.625 80.07
Wright R-1750 1927-1930 Air R-9 525 1900 760 0.69 6.000 6.875 1749.47
Curtiss H-1640 Chieftan 1927 Air R-12 600 2200 900 0.67 5.625 5.500 1640.13
Curtiss D-12F 1927 Water V-12 435 2300 680 0.64 4.500 6.000 1145.11
Curtiss V-1570 Conqueror 1927 Liquid V-12 600 2400 840 0.75 5.125 6.250 1547.17
Wright V-1456 1928 Liquid IV-12 525 2300 925 0.57 4.875 6.500 1455.91
Wright R-540 1928-1936 Air R-5 150 1800 370 0.41 5.000 5.500 539.96
Wright R-760 1928 Air R-7 220 2000 425 0.52 5.000 5.500 755.95
Wright Gipsy 1928-1931 Air L-4 85 1900 277 0.31 4.500 5.000 318.09
Wright R-975 1928- Air R-9 300 2000 520 0.58 5.000 5.500 971.93
Curtiss R-600 Challenger 1928 Air R-6 170 1800 420 0.40 5.125 4.875 603.40
Wright V-1560 1929-1930 Air IV-12 600 2400 960 0.63 5.000 6.625 1560.98
Curtiss GV-1570-C Conqueror 1929 Liquid V-12 600 2450 925 0.65 5.125 6.250 1569
Curtiss SV-1570-C Super Conqueror 1929 Liquid V-12 600 2400 920 0.65 5.125 6.250 1569
Curtiss SGV-1570-C Super Conqueror 1929 Liquid V-12 705 2450 1100 0.64 5.125 6.250 1569
Curtiss V-1400 Marine Engine 1930 Water V-12 510 2100 660 0.77 4.875 6.250 1399.91
Curtiss IS-470 Crusader 1930 Air IL-6 120 1800 345 0.35 4.125 5.500 441.01
Wright GR-1510 1933-1934 Air R-14 625 2100 1025 0.61 5.000 5.500 1511.89
Wright R-1820E 1931-1934 Air R-9 575 1900 940 0.61 6.125 6.875 1823.13
Wright SGV-1800 Conqueror 1932 Liquid V-12 1000 2400 1320 0.76 5.625 6.000 1789.24
Wright GIR-1820F 1932-1936 Air R-9 700 1950 1052 0.67 6.125 6.875 1823.13
Wright R-1820F 1932-1936 Air R-9 715 1950 956 0.75 6.125 6.875 1823.13
Curtiss-Wright H-2120 1933 Liquid R-12 1000 2400 1200 0.83 6.125 6.000 2121.46
Wright Gipsy L-20 1934 Air L-4 90 1950 223 0.85 4.500 5.000 318.09
Wright R-1820-F50 1935-1939 Air R-9 775 2100 975 0.79 6.125 6.875 1823.13
Wright GR-1820-F50 1935-1939 Air R-9 760 2100 1070 0.71 6.125 6.875 1823.13
Wright GR-1820-G100 1936- Air R-9 900 2200 1275 0.71 6.125 6.875 1823.13
Wright GR-2600 1938- Air R-14 1200 2100 1875 0.64 6.125 6.312 2603.74
Wright R-1300 1939- Air R-7 600 2300 875 0.69 6.125 6.312 1301.87
Wright R-975F 1940- Air R-9 480 2400 735 0.65 5.000 5.500 971.93
Wright GR-2600A 1940- Air R-14 1200 2100 1875 0.64 6.125 6.312 2603.74
Wright GR-3350A 1940- Air R-18 2000 2400 2450 0.82 6.125 6.312 3347.66