1. Building to a Formula What is building to a formula? What is building to a formula? Building to a specific specifications Building to a specific specifications Race car engine Race car engine Street car engine Street car engine Most racing series have specifications which engine must meet. Most racing series have specifications which engine must meet. For example: Formula 1 2011 season For example: Formula 1 2011 season 2.4 liters 2.4 liters 90 degree V8 configuration 90 degree V8 configuration Two inlet and two outlet valves per cylinder Two inlet and two outlet valves per cylinder Must weigh at least 209 lbs. Must weigh at least 209 lbs. Four stroke cycle Four stroke cycle

2. Building to a Formula No supercharger No supercharger Must not exceed 18,000 rpm Must not exceed 18,000 rpm Pistons must be circular Pistons must be circular Cylinder bore may not exceed 98 mm Cylinder bore may not exceed 98 mm Cylinder spacing must be no more than 106.5 mm Cylinder spacing must be no more than 106.5 mm Center of gravity specifications Center of gravity specifications Standardized ECU Standardized ECU No variable geometry intake or exhaust systems. No variable geometry intake or exhaust systems. Full regulations available here: regulations Full regulations available here: regulationsregulations

3. Building to a Formula For example: Nascar For example: Nascar 358 Cubic inches 358 Cubic inches Maximum bore 4.185” Maximum bore 4.185” Pistons may not weigh less than 400 grams Pistons may not weigh less than 400 grams Compression may be no more that 12:1 Compression may be no more that 12:1 Cam in block, pushrod engine. Cam in block, pushrod engine. 2 valves per cylinder. 2 valves per cylinder. Carbureted Carbureted Distributor ignition Distributor ignition

4. Building to a Formula Street cars have no rules Street cars have no rules However, you must build within the dimensional limits of the engine. However, you must build within the dimensional limits of the engine. You must build within the strength limits of the engine. You must build within the strength limits of the engine. Setting your own rules in advance will help you build your engine. Setting your own rules in advance will help you build your engine. Planning is the key to a successful build. Planning is the key to a successful build. Get to know the engine you are building. Get to know the engine you are building. Do the math so you know how much power you can realistically make. Do the math so you know how much power you can realistically make.