* No readily available kit: There isn't a readily available, off-the-shelf turbo kit specifically designed for that particular engine. Any turbocharging project would require custom fabrication and engineering.
* Engine modifications: The engine itself wasn't designed for forced induction. This means you'll likely need:
* Internal engine strengthening: The connecting rods, pistons, and crankshaft might need upgrading to handle the increased stress from the turbocharger.
* Fuel system upgrades: The fuel injectors and fuel pump will need to be upgraded to deliver the increased fuel needed.
* Engine management system (ECU) tuning: The ECU will need to be reprogrammed to account for the turbocharger and the changes in air/fuel mixture. This often requires custom tuning.
* Cooling system upgrades: The engine will run hotter under boost, requiring an upgraded radiator, intercooler, and potentially other cooling components.
* Exhaust system modifications: A custom exhaust manifold and downpipe will be needed to accommodate the turbocharger.
* Cost: The cost of all these modifications will likely exceed the value of the car, especially if you're paying for professional labor.
* Reliability: Improperly executed turbocharging can lead to engine damage or failure. It requires significant mechanical expertise and precision.
In short: While technically possible, turbocharging a 1.6 petrol Focus Zetec SE is a complex, expensive, and potentially unreliable project best left to experienced engine builders. It's generally not a cost-effective modification for this specific car. Unless you have significant mechanical experience and resources, it's advisable to consider a different approach to improving performance, such as engine swaps or other less invasive modifications.
