MENUModified Westfield Tuning Tips
Maximise your Westfield’s driving pleasure
Thanks for visiting TorqueCars, we love Westfields and see so many interesting Westfield projects.
If you are looking to build the ultimate Westfield then you came to the right place.
Our tuning tips and articles for the Westfield cover all the best mods and latest tuning methods to help you build a great modified Westfield.
With the help of our forum members, industry professionals and seasoned car modifiers we present a best practice guide to modding your Westfield.
Please join us in our forums, we love to hear what members are up to and it helps us spot trends so that we can ensure the site is always covering the latest and greatest tuning topics for Westfield owners.
Feel free to drop a tip or suggestion on the comments box at the bottom of each and every article, this feedback is greatly valued and helps us refine our articles.
So what exactly is engine knock and how dangerous is it? What causes engine knock and how can it be avoided?
You may notice a knocking or rattling noise from your engine or a sudden loss of power under full throttle.
Immediately back off the throttle and only use low rpm engine speeds until you can get the engine investigated.
The chances are that you are suffering from a condition known as “engine knock”.
Fuelling uprating the fuel system
More power means that more fuel is required so we need to uprate the fuel system and we look at performance mods for your fuelling to avoid running rich or lean.
It is essential to keep the mix of air to fuel exactly right. Power is lost when the engine adjusts itself to stop it running too rich or lean. Many power losses, which manifest themselves as flat spots, at certain points in the rev band can often be traced to a fuelling issue so we will look at performance fuelling upgrades and parts.
High performance valve springs
The valves are like the doorways into the engine and control the flow of the intake air and fuel and then after combustion they control the exit of the exhaust gases.
As you can guess the valve springs work incredibly hard, and as you increase the power of your engine the valve choice is vital.
TorqueCars will now take a look at the many considerations taken into account when selecting valve springs.
Blow off valves, dump valves and screamer pipes
Blow off valves and dump valves.
When the throttle is closed (when you lift off the accelerator) in a turbo driven engine there is a build up of pressure as forced air is still coming from the turbo. Lifting off the throttle is a lot like putting a plug in the sink – the flow through is stopped and water would just build up and overflow the sink.
