As against an inlet manifold engine of the same power, the turbo engine requires a smaller installation space and as such has a better power-weight ratio.
In order to producte qualified inlet manifold casting, top gating system with lip riser and shell core made of precoated sand is used.
A new casting technology for inlet manifold in tilt casting machine for gravity die casting was described.
Injecting fuel directly into the engine (rather than into the inlet manifold, upstream of the inlet valves) also has beneficial effects.