Engines
What we do to the Omen Race Engines
Inlet Port Timing : increasing the inlet timing allows the engine to pull more fuel and air in, in turn creating more crankcase pressure. This is a critical factor in gaining bottom end horse power.
Transfer Ports : now we have the inlet port working well, we go to work on the transfer system. Basically we re-shape the transfer ports to give the fuel and air the best chance of getting to the combustion chamber as fast and efficiently as possible.
Compression : Raising the compression plays an important part in gaining the necessary horse power to give you that winning edge. We do this by machining the base of the barrel down, making the combustion chamber smaller or reducing the squish band.
Exhaust Port Timing : Exhaust timing is something that can really dictate the way your engine performs; increasing it changes the position of the power curve through the rev range, therefore increasing it the right amount is where the answer lies.
Piston Weight : We machine the under side of the piston to make it as light as possible but keeping it reliable, also eyebrow the side of the piston on the transfer port sides to help with transfer. 231 pistons weigh about 19 grams and the 260 piston around 24 grams. This helps to let the engine rev up quicker. We also shape the piston skirt on the inlet side to give it a more progressive opening and closing system.