2021 Victorian State Race Series Round 2 Winton – Saturday
Improved Production
Improved Production, formerly known as 3J Club Cars, is loosely based on a modified road car, and is made popular by the fact that it is fast and relatively inexpensive, as far as race cars go. Starting out with a production body shell, and then carrying out substantial modifications to engines, brakes and suspension, has proven popular both with beginners to the sport and more experienced competitors. You are allowed to fit a bigger engine from the same manufacturer as the body shell. It can be a twin cam, or a turbo (with a restrictor), or a bridge or peripheral port in the case of a Mazda, depending on the model.
2021 Victorian State Race Series Round 2 Winton – Saturday
Improved Production
Improved Production, formerly known as 3J Club Cars, is loosely based on a modified road car, and is made popular by the fact that it is fast and relatively inexpensive, as far as race cars go. Starting out with a production body shell, and then carrying out substantial modifications to engines, brakes and suspension, has proven popular both with beginners to the sport and more experienced competitors. You are allowed to fit a bigger engine from the same manufacturer as the body shell. It can be a twin cam, or a turbo (with a restrictor), or a bridge or peripheral port in the case of a Mazda, depending on the model.
2021 Victorian State Race Series Round 2 Winton – Saturday
Improved Production
Improved Production, formerly known as 3J Club Cars, is loosely based on a modified road car, and is made popular by the fact that it is fast and relatively inexpensive, as far as race cars go. Starting out with a production body shell, and then carrying out substantial modifications to engines, brakes and suspension, has proven popular both with beginners to the sport and more experienced competitors. You are allowed to fit a bigger engine from the same manufacturer as the body shell. It can be a twin cam, or a turbo (with a restrictor), or a bridge or peripheral port in the case of a Mazda, depending on the model.

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