ARROW BMW STEEL MANIFOLDS 72194PD

ARROW BMW COLLECTORS

MANIFOLDS 72194PD STEEL

They look like simple pipes, but they are not. They are made in AISI 304 stainless steel for racing systems and also in titanium alloy. The Arrow manifolds that you can find in the shops are the result of the meticulous work carried out by our Research and Development Department, which makes available all its experience on tracks all over the world. To this is added the professionalism and knowledge of the technicians who take care of: diameter, section variations, components, welding and design diligently controlled to obtain a very competent, reliable and beautiful product. Depending on the engine and its combustion scheme, the best possible configuration is chosen for the grouping, from the manifolds themselves to the silencer. So we speak of 4 :2 :1, 4 :2 :2 :2, 2 :1 :2, 4 :2 :2, 2 :1 :2, 4 :2 :1, 3 :1 :1 and so on, although to the inexperienced they might seem to be just the ravings of football coaches, they are on the contrary one of the most important aspects of a manifold installation. But theory is not enough, there is an extreme care in the production process. It is essential to connect the different section passages in the best possible way in order to obtain the smoothest possible gas flow. For this purpose, the connections between the different components of the collectors are manufactured with parts made by numerically controlled machines. For the same reason the welds have to be made carefully and not to reduce the cross-section of the exhaust gas passage