Think first if Want to Replace Camshaft Racing

Before the first change should be understood as a function of racing camshaft (Racing Cam Shaft). When the piston down to the bottom to make the process of suction, the valve in (income) will open to let the fog of fuel and air is sucked into the combustion cylinder inner space, then according to engine rpm, the valve will be closed and the movement of the piston up to the top to do the compression , at this step in the compressed air reaches a pressure of 100 psi (per square inch) for compression standard, but when using racing noken can reach 120 psi (compression racing engine), even more extreme 138 psi for compression motors Drag Race.
In racing Noken controlling the opening of the valve in the supply of more and longer duration of its opening to allow a mixture of air and fuel into the fog of the combustion chamber more than the standard, then sprinkled the fire to spark plugs after a devastating burst in compression by the piston. Of course, the supply of fuel and air mist which is very much needed by opening the valve in the supply of more and longer duration of this, it is necessary to change the carburetor using ventury hole bigger step up 4 (of diameter 24mm up to 28mm diameter).
In racing Noken there are 2 options and variations of the model how it works;

     Driven in the valve openings larger (mm) of the standard, the standard 7mm 4,5mm while racing in the valve openings. The impact can be broken because the standard valve hefty impact.
     Opening the valve in with a long duration (valve opening degree), standard; 2 degrees before TDC and closes 26 degrees after BDC = 208 degrees duration openings in the valve, the valve opening height in 4,5mm. For the Racing 4 degrees before TDC and closes 32 degrees after BDC = 216 degrees in the valve opening duration, with the opening of the valve in high 5,5mm. Meanwhile, for the purposes of Drag Race can reach 250 degrees in the valve opening duration. The impact could weaken the standard valve spring rebound (resilience) because the pressure is too long in duration.

There is overlap between the valve and the valve ex (disposal) long on the camshaft as racing; open the valve in 4 degrees, 6 degrees of valve cap ex = 10 degrees overlap (both valves open simultaneously) in the rinse process (combustion and exhaust fumes suction fog mixture of fuel and air). While on the camshaft as standard; 2derajat open the valve, the valve closes 4 degrees ex = 6 degrees of overlapping.
Since the contact area between the axles racing camshaft with rocker arm (valve trigger) more liffting nok (top adoptive higher ramps and not perfect) also affect the impact (punch) at the head stem valves, valve replacement is needed, it must be racing as well, and to prevent the symptoms of floating (floating) on the valve spring, then it also must be replaced and gentlemen, can use per valve Honda Sonic. The effect of this change will affect the high noise (noise) of the block cylinder head, because of the effect as a more rigid and harder with higher openings in the valves.
If you are ready with the materials - a danger, Ok ... can replace the camshaft as Racing, could increase energy 25%, increase the top speed is 35%.