The Continental R-670 (factory designation W670) was a seven-cylinder four-stroke radial aircraft engine produced by Continental displacing 668 cubic inches (11 litres) and a dry weight of . Horsepower varied from 210 to 240 at 2,200 rpm. The engine was the successor to Continental's first radial engine, the 170 hp Continental A-70. This engine was used on many aircraft in the 1930s and 1940s. The R-670 was widely used in the PT-17 Stearman primary training aircraft of the U.S. military.
In addition to being used in aircraft, the R-670 was used in a number of light armored vehicles of World War II.
Variants
Data from: Jane's All the World's Aircraft 1938
Variants of the W670 included: W670-Kcarburetor, 5.4:1 compression, 65 Octane, front exhausts and W670-Lcarburetor, 5.4:1 compression, 73 Octane, rear exhausts and W670-Mcarburetor, 6.1:1 compression, 80 Octane, front exhausts and W670-Ncarburetor, 6.1:1 compression, 80 Octane, rear exhausts and W670-K1fuel injection, 5.4:1 compression, 73 Octane, front exhausts and W670-L1fuel injection, 5.4:1 compression, 73 Octane, rear exhausts and W670-M1fuel injection, 6.1:1 compression, 80 Octane, front exhausts and W670-N1fuel injection, 6.1:1 compression, 80 Octane, rear exhausts and
Applications
Aircraft
American Airmotive NA-75
Boeing-Stearman Model 75 (PT-17, N2S) CallAir Model A Cessna 190 Eagle Aircraft Eagle 220 Fairchild PT-23 Funk F-23 G class blimp Grumman G-164 Ag Cat Kellett K-2A, K-4 Morane-Saulnier MS.317 Timm N2T Tutor Waco 240-A Waco Standard Cabin series (UEC, UIC, UKC, UKC-S, UKS, VKS) Waco Custom Cabin series (UOC, VQC) Waco A series (UBA, ULA) Waco F series (UBF, UMF, UPF)
Armored fighting vehicles
T2 Combat Car
T4 Combat Car
M1 Combat Car
M2 Light Tank
M3 Stuart
Landing Vehicle Tracked (LVT-2, -4; LVT(A)-1, -2, -4, -5)
Specifications (R-670-K)
See also
References
Notes
Bibliography
Gunston, Bill. World Encyclopaedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989. Jane's Fighting Aircraft of World War II. London. Studio Editions Ltd, 1998.
External links
https://web.archive.org/web/20070807212519/http://www.oldengine.org/members/diesel/Duxford/usaero1.htm