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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.

Alloy wheels and their impact on handling and performance.

Some rally style alloy wheels are lighter – (less weight = more speed) and also are designed to increase the cooling of the brake disks.

Some designs hold up better to being curbed than others and some break very easily when hitting a pothole or curb at speed.

Always go for the best quality alloy wheel that you can afford and read the reports and reviews. If you do go for a different overall size you must get the suspension and tracking realigned to avoid uneven wear under acceleration.

Vents – adding performance with Bonnet vents.

Performance gains are possible with the addition of bonnet vents.

Warm air really does kill performance. This is due to the air intake temperatures being hot and air at high temperatures carries less oxygen.

When driving an engine hard the under bonnet temperatures quickly build up and the engine has no choice but to suck this air in reducing your power.

Adding NoS nitrous oxide to boost power gains.

Giggle gas – something to put a smile on your face. "Giggle Gas – Nitrous Oxide (N20) the power button!" […]

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