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Back in the good old days – the task of timing the ignition spark was performed by the distributor. The greater the RPM, the more the timing would advance.
This did a reasonable job but for the most effective power you would need to vary the timing to a greater degree than a fixed ratio advance curve. The electronic ignition system was borne.
Choosing cam profile for fast road and track.![](https://www.carref.com/cms_admin/images/fast-road-cam-266x114.jpg)
Camshafts durations and profiles. "Cam(alot) of power!" Cam profiles and cam durations. The cam shaft controls the inlet and outlet […]
How to add a turbo to a non turbo car.![](https://www.carref.com/cms_admin/images/turbo-engine-266x114.jpg)
The basic reason for forced induction (turbo or supercharger) is not to increase compression or the maximum pressure in an engine cylinder, it is to increase volumetric efficiency (the efficiency of the engine at drawing in air) although forced induction is the most effective method of upping compression.
In computer games we just tick a box, and within seconds our car is fully turbocharged and running much faster. In the real world things are very different.
Fuel and fuel additives octane and pressure boost valves.![](https://www.carref.com/cms_admin/images/fuel-full-266x114.jpg)
Choice of fuel becomes more critical in a high compression or turbo engine. "One of my Pet(rol) hates!" Fuel: this […]