Become a Member: Get Ad-Free Access to All Our Content

1935 Duesenberg Model SJN

1935 Duesenberg Model SJN

The most desirable of all the Model Js is the SJN which combines the supercharged SJ engine with the lower and wider bodywork from the JN. Only two of these models were made and each is the most celebrated of the type.

Our feature example is J564 and was built by Rollston as their flagship offering. It is similar to the four other Rollston Convertible Coupes but is unique with its four external door hinges.

At the time of writing J564 is a thoroughly original car showing just 16,500 miles on the odometer. It has been carefully used by William Parfet and displayed all the major American Concours.

The second SJN is J533 which is a long-time exhibit of the Nethercutt Collection. In 2011 it debuted from an extensive restoration that changed the outward color from black to silver. It later won Best of Show at the 2013 Amelia Island Concours d’Elegance.

Story by Richard Michael Owen

1935 Duesenberg Model SJN Gallery

See full 1935 Duesenberg Model SJN Gallery

1935 Duesenberg Model SJN


In Detail

type Limited Production Car
built at USA
coachbuilder Rollston
production 2
engine Lycoming Straight-8
position Front, Longitudinal
aspiration Centrifugal, Gear Driven Supercharger
valvetrain DOHC, 4 Valves per Cyl
displacement 6878 cc / 419.72 in³
bore 95.25 mm / 3.75 in
stroke 120.65 mm / 4.75 in
power 238.6 kw / 320 bhp @ 4200 rpm
specific output 46.53 bhp per litre
torque 576.2 nm / 425 ft lbs @ 2400 rpm
redline 5200
body / frame Custom Body over Steel Frame
driven wheels RWD
front brakes Drums w/Hydrualic Assist
rear brakes Drums w/Hydrualic Assist
front wheels F 48.3 x 17.8 cm / 19 x 7 in
rear wheels R 48.3 x 17.8 cm / 19 x 7 in
steering Ross Cam and Lever
f suspension Rigid Axle w/Semi-Elliptic Springs, Double-Acting Hydraulic-Lever Shock Absorbers
r suspension Live Axle w/Semi-Elliptic Springs, Double-Acting Hydraulic-Lever Shock Absorbers
transmission Warner Hy-Flew 3-Speed Manual
gear ratios 2.485:1, 1.397:1, 1.000:1