The Engine Catalog

Durant Motors bought most of its engines from outside suppliers, chiefly Continental Motors. This page lists which engine was used in which make, year, and model, as far as we know.

This page is a work in progress, based on Terry Kulchycki’s working notes. Entries marked “?” are unconfirmed. If you can confirm or correct an entry, please let us know.

Photographs are shown with their engines in the tables. Click one to see it larger.

Continental engines

EngineUsed in (year and model)
W-4Star: 1922–24 C; 1923–24 CC; 1924 F
Rugby: 1923 C; 1924 F
W-5Durant: 1928–29 M2; 1929 40, M4, S4
Star: 1924–26 F; 1925–27 M; 1928 M2
Rugby: 1924–25 F; 1926–27 M; 1928 M2; 1929 40, M4; trucks X, X2, S, S2, S4, 401
The 1929 Durant M2 and 1926 Star F are from their fact sheets (Continental four-cylinder, 3-3/8″ × 4-1/4″, the W-5 size). The Rugby trucks were once listed with a separate “W-5A” engine, but W-5A is the same engine: Continental cast an A after the engine code (see below). The 401 was a Rugby, never a Durant.Casting mark W5A on the block of a Star F engineA Star F block, cast “W5A”
W-8Durant: 1930–31 610; 1930–32 407
Rugby: 1930–31 406; 1931 416
The Durant 610 and 407 were sold as Rugbys when exported. There was no Durant 401.
6EFlint: 1923–26 E-55; 1926–27 E-80Continental 6E, right sideRight side
6WFlint: 1925 H-40; 1925–26 B-40
9LFlint: 1926–27 Z-18
14LDurant: 1928 55; 1928–29 60
Star: 1926–27 L; 1926–27 R
Rugby: 1926–27 R; 1928–29 L, L2, T (Fast Mail)
The Durant 60 was made in two series: series 1 in 1928 and series 2 in 1929.Continental 14L, right sideRight sideContinental 14L six-cylinder engine with oil filter, from a Durant 55 brochureWith oil filter, from a Durant 55 brochure
14UFlint: 1927 B-60
15LDurant: 1928 65; 1929 66; 1930 63, 66
The Durant 60 did not use the 15L.Continental 15L, left sideLeft side (not confirmed as a 15L)Continental 15L, right sideRight side (not confirmed as a 15L)Continental 15L engine with four-speed transmission, in a 1929 Durant 66With four-speed transmission, in a 1929 Durant 66
15UDurant: 1928 75; 1929 70; 1930 617
The 617 probably used up 15U engines left over from the 70 and 75.Continental 15U six-cylinder engine, right side, in a Durant 75Right side, in Steve Blomquist’s Durant 75Continental 15U six-cylinder engine, left side, in a Durant 75Left side, in the same carCasting mark on the block of a Continental 15U engineThe same block, cast “15UA”
22ADurant: 1930–31 612; 1930–32 614; 1931 611, 619; 1931–32 618
Frontenac: 1931 E (also called E 618); 1932 6-70
Rugby: 1930–33 615, 616
The Frontenac 6-70’s car number plate shows “E”; “6-70” does not appear anywhere on the car. No 22A blocks were cast after 1931: the 1931–32 Durants built in Canada and the Rugby trucks built there until December 1933 used engines already on hand.
32ADurant: 1932 618, 633
Frontenac: 1932 6-85
40ADeVaux: 1931–32 6-75; 1932 6-80
The Continental-Hall engine; on the 6-80 the Hall name was removed. The DeVaux used a Tillotson updraft carburetor.
41AContinental: 1933 Ace 81 (US)
Frontenac: 1933 Ace 91 (Canada)
The 40A block from a 1931 casting, with the Hall name removed, renamed 41A. Ace blocks and heads are cast “40AA601” with 1931 dates; only the engine plate says 41A. The Ace used a Marvel downdraft carburetor.Continental Red Seal 41A six-cylinder engine, as used in the Continental AceFrom a Continental Ace
C400Continental: 1933 Beacon (US); 1934 Red Seal Four
Frontenac: 1933 C-400 (Canada)
C600Continental: 1933 Flyer (US)
Frontenac: 1933 C-600 (Canada)Casting mark C600A-501 on a Continental C600 engineFrom a Frontenac C-600, cast “C600A”
Continental engines by make, year, and model

Continental cast an A after the engine code on its Red Seal engines, which were for automotive use; its Blue Seal (B) engines were for industrial use. So a W-5 block is cast “W5A,” a W-4 “W4A,” a 15U “15UA,” a 22A “22AA,” and a C600 “C600A.” The A is not a different engine.

Durant and Ansted engines

EngineUsed in (year and model)
OHV-4Durant: 1921–26 A-22
Durant’s own four-cylinder overhead-valve engine, 3-7/8″ × 4-1/4″. The 1922 fact sheet says “Motor designed by Durant engineers, valve in head type.”Durant four-cylinder overhead-valve engine shown from above, from the left with the head lifted, and from the right with the head and oil pan offFrom an early Durant magazine
OHV-6Durant: 1923 B-22
An Ansted six-cylinder overhead-valve engine, 3-1/4″ × 4-1/2″. The 1923 fact sheet calls it a Continental.
Overhead-valve engines of the Durant A-22 and B-22

Locomobile engines

Locomobile built its own engines for its larger cars and bought others from outside makers, including Lycoming.

EngineUsed in (year and model)
LocomobileLocomobile: 1921–22 48-7; 1923–24 48-8; 1925–26 48-9; 1926 48-9/10; 1927–29 6-48; 1926–29 6-90
Locomobile’s own engines.
8PLocomobile: 1925–27 Junior Eight (also called the 8-66)
10SLocomobile: 1928–29 8-70
10PLocomobile: 1925 Junior Six
Shown only; never produced.
Lycoming H.D.L.Locomobile: 1927–28 80; 1929 8-86, 8-88
Locomobile engines by year and model