Car Tuning Car Trivia 3

Question 1

What does 'port and polish' mean when applied to cylinder head modification?

Accepted Answer

Smoothing and reshaping intake/exhaust ports to improve airflow

Answer

Port and polish is the process of grinding and smoothing the intake and exhaust ports in a cylinder head to remove casting imperfections and improve airflow efficiency.

Question 2

What is the purpose of an anti-roll bar (sway bar) upgrade in suspension tuning?

Accepted Answer

To reduce body roll during cornering and improve handling

Answer

An upgraded anti-roll bar connects opposite wheels and resists the twisting force during cornering, reducing body roll and keeping more tire contact with the road.

Question 3

In forced induction tuning, what is 'intercooler efficiency' measured by?

Accepted Answer

How well the intercooler reduces compressed air temperature relative to ambient temperature

Answer

Intercooler efficiency is the percentage of heat removed from the compressed charge air, comparing inlet temperature to ambient temperature and actual outlet temperature.

Question 4

What is the stock redline RPM of a stock Honda S2000 AP1 engine (F20C)?

Accepted Answer

9,000 RPM

Answer

The Honda F20C in the AP1 S2000 redlines at 9,000 RPM, making it one of the highest-revving naturally aspirated production car engines ever built.

Question 5

What is a 'tune' or 'ECU tune' primarily used to modify in a performance vehicle?

Accepted Answer

Fuel maps, ignition timing, and boost control parameters

Answer

An ECU tune reprograms the engine control unit's fuel injection, ignition timing, boost targets, and other engine management parameters to optimize performance for modified hardware.

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Car Tuning Car Trivia 3