It's a Mitsubishi Lancer/Colt Engine, It belongs to the Mitsubishi Orion Engines Family with a single overhead camshaft (SOHC) codenamed "4G18".
Anyways proton have made serveral modifications to this Engine to make it powerful yet suitable for city driving, unlike the CamPro engine in new Wajas, the Mitsu engine delivers it maximum performance @2750 RPM but loses acceleration in high speeds, which I find to be an advantage in a crowded city like cairo as most of our everyday driving is in the rpm range of 2000-3000 rpm.
Please refer to this site for a comparison between the Mitsu engine and the new CamPro Engine and judge yourself.
http://paultan.org/archives/2006/01/...o-vs-waja-4g18
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