Duesenberg Straight-8 engine

Duesenberg Straight 8

Manufacturer	Duesenberg / Lycoming
Production	1921–1937

The Duesenberg Straight-8 engine was produced from 1921 to 1937 and sold in Duesenberg automobiles. Fred and August Duesenberg got their start building experimental racing engines which achieved a great deal of success. Among their accomplishments are wins at the Indianapolis 500, the 1921 French Grand Prix and speed records at the Bonneville Salt Flats. They used the expertise they had gained to start building production engines and cars which were renowned for their performance and luxury.

Among the novel design features (for a pre-1940 production engine) seen on various Duesenberg engines are single- and double-overhead camshafts, three- and four-valve heads, superchargers and aluminum castings.

Production engines

Production	Engine	Displacement	Bore x stroke	Cam and valve	Model
1921-27	260	259.7 cu in (4,256 cc)[1]	2.8750" X 5.0000" (72.16 x 125.50 mm)	SOHC 2v	A,X
1928-37	420	419.7 cu in (6,878 cc)	3.7500" X 4.7500" (94.12 x 119.23 mm)	DOHC 4v	J,SJ,SSJ

Competition engines

Production	Engine	Displacement	Bore x stroke	Cam and valve
1919-21	300	296.9 cu in (4,865 cc)	3.0000" X 4.7500" (75.30 x 131.78 mm)	unk
1921-23	183	183.0 cu in (2,999 cc)	2.5000" X 4.6600" (62.75 x 116.97 mm)	SOHC 3v
1923-25	122	121.3 cu in (1,988 cc)	2.3750" X 3.4220" (59.61 x 85.89 mm)	unk
1926-29	91	90.3 cu in (1,480 cc)	2.2860" X 2.7500" (57.38 x 69.03 mm)	unk
source: The Golden Age of the American Racing Car[2]

See also

• Duesenberg
• Multivalve
• OHC
• Overhead valve
• Straight-8
• Lycoming Engines

Notes

1. ^ "Directory Index: Duesenberg/1922_Duesenberg_Model_A_Catalogue". Oldcarbrochures.com. http://www.oldcarbrochures.com/static/NA/Duesenberg/1922_Duesenberg_Model_A_Catalogue/1922%20Duesenberg%20Model%20A%20Catalogue-07.html. Retrieved 2011-11-20. 
2. ^ Borgeson, Griffith. The golden age of the American ... - Google Books. Books.google.com. ISBN 9780768000238. http://books.google.com/books?id=MDMFSp7xTp0C&pg=PA183&lpg=PA183&dq=duesenberg+bore+stroke&source=bl&ots=en4vRqGNO6&sig=P2DHrsUZlzDVsMsK4dx9ItPqbJU&hl=en&ei=2vTCSYOWA5uuyQWN072nCw&sa=X&oi=book_result&resnum=3&ct=result. Retrieved 2009-07-05. 

References

• Griffith Borgeson (1997). The Golden Age of the American Racing Car. SAE International. ISBN 978-0768000238. 

External links

• Grand Prix Car
• Model A
• Model X
• Model J