Updated: 20-Mar-2020
The AMUAL initials belong to the following name: "Ateliers d'Usinage et Modernes d'ajustage Levallois" and also known as "Le Maitre et Gerard". The company was situated in the area of Levallois-Perret.
-They built V-8 aero engines: the MJ-5, MJ-6 and MJ-7.
"Amual MJ-6"
-The MJ-5 gave 350 CV at 1,400 rpm and the V was formed by an angle of 65 degrees. It had 1,729 cubic inches of displacement.
-The MJ-6 gave 400 CV. It also had 8 cylinders in V.
-The MJ-7 reached the 600/700 CV at 1,400/1,600 rpm, and the V was formed by an angle of 90 degrees.
Amual MJ-7
-This power was obtained with only eight cylinders because the pistons had 180 mm diameter by 210 mm stroke. It seems that it remained an experimental engine.
"Another view of thel MJ-7"
From Appendix 10: We have an ad in which appears the MJ-7 engine, also known as "Benjamin". With this name was also referred to the MJ-5 and MJ-6. (View main text)
-AMUAL is a contraction of the name "Ateliers Modernes d'Usinage et d'Ajustage de Levallois", but also known as "Le Maitre et Gerard".
"MJ-7 ad"
Engines of AMUAL
Model: MJ-5
Arquitecture: 8-cylinder V-Engine
Cooling:
Total Displacement: 1729 cu. in.
Bore / Stroke: 150 x 200 mm
Power: 350 CV @ 1400 rpm
Weight: 805 Lb
The V was formed by an angle of 65 degrees.
Model: MJ-6
Arquitecture: 8-cylinder V-Engine
Cooling:
Total Displacement:
Bore / Stroke: 150 x 200 mm
Power: 400 CV @ 1450 rpm
Weight:
The MJ-6 had the cylinders in a 90-degree V.
"Amual MJ-6"
Model: MJ-7
Arquitecture: 8-cylinder V-Engine
Cooling:
Total Displacement: 2612 cu. in.
Bore / Stroke: 180 x 210 mm
Power: 600 CV @ 1400 rpm
Weight:
The MJ-7 reached the 600/700 CV at 1400/1600 rpm, and the V was formed by an angle of 90 degrees.
"Amual MJ-7"