This paper presents discussions on predicting turbulent flow in a simplified internal combustion engine geometry consisting of an intake port, valve and cylinder. The low-Reynolds-number linear k-e, cubic nonlinear k-e and k-e-A2 turbulence models are applied to the flow field computation and evaluated against experimental data. The results suggest that the cubic nonlinear eddy viscosity modelling of turbulence is very successful for predicting mass flow rates and in-cylinder velocity distributions.