Rotary engines
 

12a engine rebuild service

12a engine rebuild service starts with your core. Pricing is a base starting point. Additional services such as porting, balancing, lightened rotors, scalloped rotors, race modifications can be added for extra cost. 

20b engine rebuild service

20b engine rebuild service starts with your core. Pricing is a base starting point. Additional services such as porting, balancing, lightened rotors, scalloped rotors, race modifications can be added for extra cost. 

13b engine rebuild service

13b engine rebuild service starts with your core. Pricing is a base starting point. Additional services such as porting, balancing, lightened rotors, scalloped rotors, race modifications can be added for extra cost. 

20b engine- complete shortblock. No core. 

20B complete engine will start as a factory pullout from japan. These motors are found in the Mazda Cosmo. We rebuild this core motor to factory specs. Pricing is a base starting point. Additional services such as porting, balancing, lightened rotors, scalloped rotors, race modifications can be added for extra cost. 

26B 4-rotor assembled shortblock

The big block of the rotary world. Defined Autoworks has built the most 4-rotor engines in the United States. We are still actively racing the first 4 rotor assembled which has been going strong for over 8 years. 

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The 4 rotor can be built in a multitude of ways. From streetport, semi p-port, full peripheral port, naturally aspirated or Turbocharged. The possibilities are endless. Pricing is a starting base.