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Honda Racing Corporation

How CNC Machining Powers Indy 500 Wins

Driving Performance Through Precision Manufacturing

At its Santa Clarita, California facility, Honda Racing Corporation (HRC) brings together engineering, manufacturing, and testing to produce high-performance race engines and components. Supporting programs in IndyCar, IMSA sports cars, and off-road racing, the organization operates in an environment where performance is evaluated every week on the track.  

As Production Director, Jason Castillo explains, the stakes are clear: “If we make a mistake, it’s visible Saturday during the race… and we’ve got to come back and fix it the following week.”  

To meet these demands, HRC relies on Mastercam to help transform complex ideas into high-performance parts with speed, accuracy, and confidence. 

Overview

Challenge

HRC must deliver high-performance, durable racing engines under extreme time pressure, requiring rapid design changes, precise manufacturing, and seamless collaboration across teams.

Solutions

HRC leverages Mastercam’s advanced multiaxis programming, mill-turn integration, and full simulation capabilities to efficiently design, validate, and produce complex components in a streamlined workflow.

Results
Enable faster iteration, greater machining confidence, and optimized performance, allowing HRC to quickly respond to testing and maintain a flexible, high-precision manufacturing process.

The Challenge:

HRC operates in one of the most demanding manufacturing environments in the world: professional motorsports, where timelines are compressed, and performance expectations are extreme. 

Engines must deliver power while meeting strict durability targets, ranging from approximately 2,500 miles in IndyCar to up to 4,500 miles in endurance sports car racing.  

At the same time, teams are constantly pushing the limits of performance: 

  • Designs must balance durability with weight and efficiency 
  • Failures must be diagnosed and corrected immediately 
  • New parts often need to be designed, machined, and tested within days 

There are times when issues discovered during dyno testing result in a rapid response: 

  • We need to change this on the component 
  • Update the program and machine the part 
  • Have a new version running as soon as the next day 

This level of speed requires seamless collaboration between engineering, programming, and manufacturing, all without sacrificing precision. 

The Solution:

HRC uses Mastercam across its machining operations to program, simulate, and validate a wide range of complex components. From Mill-Turn parts to full 5-Axis geometries, Mastercam enables the HRC team to bring designs to life efficiently and reliably.  

Key capabilities include: 

  • Advanced Multiaxis programming 
    Programmers use unified, morph, and blade-focused toolpaths to machine intricate geometries such as swirl vanes and impellers.  
  • Mill-Turn integration 
    Mastercam supports complete workflows on multitasking machines, allowing parts to be completed in a single setup.  
  • Full simulation and verification 
    Teams simulate entire machining processes, from turning through milling, ensuring confidence before running on the machine.  
  • Seamless workflow from programming to production 
    By validating toolpaths and setups in advance, operators can get on the machine with a lot of confidence, reducing risk and speeding turnaround.  

This integrated approach allows HRC to move from concept to finished component rapidly, while maintaining the accuracy required for high-performance racing.

“Mastercam gives us the confidence to go straight from programming to the machine—it allows us to make our ideas come to life.”

Kyle Rush, Manufacturing Engineer at Honda Racing Corporation

Results:

Speed and Responsiveness 
Mastercam enables fast iteration cycles, allowing teams to respond to testing results and implement design changes in as little as one day.  

Confidence in Machining 
With comprehensive simulation and toolpath control, programmers and operators can run complex parts with assurance, minimizing errors and rework.  

Optimization of Performance 
By supporting precise control over geometry and machining strategies, Mastercam helps engineers refine components for both durability and peak performance.  

Versatility Across Applications 
From simple lathe operations to advanced 5-Axis machining, Mastercam supports a wide range of manufacturing needs within a single platform.  

Dynamic, Innovative Workflow 
The flexibility of Mastercam allows HRC to use it in many ways, keeping workflows adaptable and aligned with evolving design demands.  

Project Details

HRC’s facility integrates multiple disciplines into a cohesive workflow: 

  • Assembly and Manufacturing 
    Engine components are machined and assembled onsite, leveraging extensive expertise across the team.  
  • Dyno Testing 
    Every engine is validated through testing, including full race simulations that replicate real-world conditions such as weather, lap profiles, and driver behavior.  
  • Advanced Machining 
    Components include impellers, butterfly valves, swirl vanes, and other precision parts manufactured using 5-Axis and Mill-Turn technologies. 
  • Closed-loop Improvement 
    Insights from testing feed directly back into design and manufacturing, enabling rapid innovation and continuous improvement.  

Quick Facts

  • Product Used: Mastercam Mill-Turn, Mastercam Multiaxis, Simulation
  • Industry: Motorsports, High-Performance Manufacturing