Collettore di scarico Perkins 4.108

[Cosmo]

Ho dato uno sguardo più attento al sito postato da Kermit, e stando a quanto dicono, non sembra poi così complicato.
Le loro spiegazioni sembrano anche fugare alcuni dei dubbi espressi in precedenza.
Riporto la loro descrizione:
"Combined exhaust manifold and heat exchanger that fits all versions of these engines. This is a high quality original equipment part as supplied by Perkins in their later factory marinised versions and known as the 'Bowman' heat exchanger.

Direct cooling of the cylinders and heads by sea water is unsatisfactory, because the engine – which was probably originally designed for radiator cooling – will run too cold and the sea water will eventually ruin the cylinder block and heads.

Heat exchanger cooling is the most common method, the sea water being isolated in components which can be designed to withstand its corrosive affect. The closed fresh-water circuit can be thermostatically controlled so that the engine operates at its designed temperature."