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Principles of porting an engine and big valve conversions

The inlet and outlet ports on the engine block are usually larger than those of the manifolds that connect to them.

This allows for scope in the manufacturing process to allow for mismatched alignment.

Generally the engine ports are larger in the upstream flow direction avoiding turbulance but power gains can be made by matching these up.

Remaps for diesel engines

Our members frequently talk about their latest mods and power figures. Many of our members have remapped their diesel engines and boast of more power, better economy and unchanged reliability.

But do the claims live up to reality? What sort of power figures can you get from a diesel remap? Diesels have really come so far in a very short time.

Power gains from a sports catalyst

Catalysts are a vital component in our modern tree hugging environmentally conscious society. First TorqueCars will look at what a catalyst does and how it works.

A catalyst is actually a term used to explain anything which accelerates or performs a chemical reaction. In a car the exhaust fumes are fed through a matrix of ceramic honeycomb lined with precious metals.

Turbo tuning – Aftermarket OEM turbos upgrade kit.

When it comes to Turbo tuning you have pretty much unlimited potential and a wide selection of options.

The more power you want from a turbo the greater the amount of heat it will generate and the bigger the stress on the internal components.

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