Chris Ireland one of the Uk’s Best master Engineer no1 trike builder no 1 chopper builder no1 pulling tractor builder this man is a master of engineers keep up the good work Desperate dann.
M503 engines were installed in Soviet Osa-class (Project 205) fast attack missile boats used by a number of countries. Each of these boats had three M503 engines installed. Engines were also installed in other ships. A heavily modified M503 engine is currently used in the German Tractor Pulling Team Dragon Fire. This engine has been converted to spark ignition and uses methanol fuel. Each cylinder has three spark plugs in custom-built cylinder heads. The engine also uses custom-built, exposed, cylinder barrels and a modified supercharger without the turbine. Dragon Fire’s engine produces around 10,000 hp (7,466 kW) at 2,500 rpm and weighs 7,055 lb (3,200 kg).
I think I read\heard somewhere that the engine here was originally intended for aircraft. It wound up being mostly used in marine applications! There's a vid of one being lifted out of a boat to be either replaced or repaired.
It's popular in nearly any place there are farmers. Before farmers had tractor pull competitions, they did ox pull competitions to find who had the strongest oxen.
I really don’t know why you people bother with this it’s not a sport it’s a waste of time and money your better of feeding the poor with money you spend on the engines
zvezda m503 Die Motoren sind schnelllaufende Viertakt-Dieselmotoren mit OHC-Ventilsteuerung, Trockensumpfschmierung und Wasserkühlung in Reihensternbauweise. Kennzeichnend sind die sieben Zylinder je Stern mit einem Winkel von 51,43° zueinander sowie die Zylinderbohrung von 160 mm und der Kolbenhub von 170 mm. Daraus ergibt sich ein Hubraum von 143,6 l für die 42-Zylinderversion und 191,4 l für die 56-Zylinderversion.
