Car Tuning Car Trivia 2

Question 1

What does 'stroking' an engine mean in the context of car tuning?

Accepted Answer

Increasing the crankshaft stroke to boost displacement

Answer

Stroking an engine involves using a crankshaft with a longer throw, increasing the piston stroke and thus total displacement for more torque.

Question 2

Which type of differential is most commonly used in high-performance rear-wheel-drive tuner cars?

Accepted Answer

Limited-slip differential (LSD)

Answer

Limited-slip differentials (LSD) are preferred in performance tuning because they distribute torque more evenly between rear wheels, improving traction during hard acceleration.

Question 3

What is the primary purpose of a blow-off valve (BOV) on a turbocharged car?

Accepted Answer

To release excess boost pressure when the throttle closes

Answer

A blow-off valve vents pressurized air from the intake tract when the throttle plate closes, preventing compressor surge and protecting the turbocharger.

Question 4

What was the factory horsepower rating of the original 1969 Dodge Charger Daytona's 426 Hemi engine?

Accepted Answer

425 hp

Answer

The 426 Hemi engine in the 1969 Dodge Charger Daytona was factory-rated at 425 horsepower, though actual output was widely believed to be higher.

Question 5

In drag racing, what does the term 'Christmas tree' refer to?

Accepted Answer

The starting light sequence on the drag strip

Answer

The 'Christmas tree' is the vertical light system at the start of a drag strip that sequences amber staging lights before the green go signal.

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Car Tuning Car Trivia 2