Fiesta ST 150 2.3 Duratec Conversion

Pumabuild are the first specialist tuning company to successfully fit a 2.3 Duratec into the Mk6 Fiesta ST150 and running it on standard engine management. We personally like the 2.3 engine as it produces lots of torque and if you know your stuff you will know that torque is the turning force that and engine produces. The larger amount of torque the faster the engine will accelerate, the BHP the engine produces is how much work the engine can ultimately do. To help explain this look at WRC rally cars they have BHP limits set at a little over 300bhp but the torque the produce is close to 500lbft!

Another interesting thought to ponder on is when you are driving your car where is your rev counter? I bet it is between 2,000rpm and 4,500rpm 90% of the time and 4,500rpm to 7,000rpm the remaining 10% of the time. This means the 2.3 has lots more usable power than the 2.0 which is also a good engine but you have to rev it hard to 8,500rpm+ to get the power, ideal for the track but not so good if it is a daily drive.

The 2.3 engine produces 15% more power and torque in std form throughout the whole rev range so the is no downside at all! If you have a 2.0 litre which is modified then you will be able to swap them over to the 2.3 as they are virtually identical.

The 2.3 engine just gets better and better, we can basically can build an engine to suit your needs starting from 160bhp / 160lbft up to 215bhp / 185lbft on std management If you want more then you will need to run throttle bodies and after market management such as Pectel T2 expect 250bhp / 220lbft. If this still does not satisfy your needs a full race engine can be built using Cosworth parts producing 300bhp for more information on 2.3 litre Duratec engines please call us on 0121 356 2638



2.3 Duratec 160bhp/160lbft Stage 1

This is the entry level which runs on low compression pistons 9.7:1 and is basically a standard 2.3 engine which is fitted in the American Market, This particular engine would possibly suit a low boost turbo. Please remember if you have any other modifications on your car such as a manifold, Exhaust system, Cams the 160 bhp figure will increase a lot.

£2,350 includes fitting and VAT.


2.3 Duratec 170bhp/170lbft Stage 2

As above but with Cosworth high comp pistons (11:1 or 12:1).

We suggest fitting the Cosworth pistons to raise the compression ratio so higher power outputs can be achieved. Please remember if you have any other modifications on your car such as a manifold, Exhaust system, Cams the 160 bhp figure will increase a lot.

From £2995 includes fitting and VAT.


Stage 3-6 180bhp to 300bhp

Please call for Stages 3 to 6 as they can be a little awkward to price as it helps to know what the customer would like from his engine.