Old straight engine inline engine - print ready 3D print model

I presented painting suggestions on renderings A straight-four engine (also called an inline-four) is a four-cylinder piston engine where cylinders are arranged in a line along a common crankshaft. S-21 model mount in old polish car Zuk, Nysa, Tarpan and Warszawa. Carburetor, Starter, water pomp, Air and oil filter, manifold and other parts. In my other projects there are (or will) other parts of the car and this engine divided into elements

Scale 1:10, Non manifold: 0, Intersect faces: 0 but contains small element