Lecture on Honda Engines: IndyCar vs. Civic Type-R

Overview

• Collaboration with Honda
• Focus on a 2.2 liter engine producing over 700 HP
• Comparison between IndyCar engine and Honda Civic Type-R engine
• Insight from the Belle Isle Grand Prix, Detroit

Engine Specifications

IndyCar Engine

• Type: 2.2L Twin-Turbocharged V6
• Horsepower: ~700 HP (exact number not disclosed)
• RPM: Revs up to 12,000 RPM
• Bore Size: Max 95mm (assumption)
• Stroke: 51.7mm (estimated)
• Average Piston Speed: 20.7 m/s (46.3 mph)
• Fuel: 85% ethanol, 15% gasoline (E85)
• Peak Boost (Push to Pass): 1650 mbar (23.9 psi)
• Durability: Designed to last ~2500 miles

Honda Civic Type-R Engine

• Type: 2.0L Inline 4-Cylinder Turbocharged
• Horsepower: 306 HP
• RPM: Revs up to 7,000 RPM
• Bore x Stroke: 86mm x 85.9mm
• Average Piston Speed: 20.0 m/s
• Fuel: 91 Octane Gasoline
• Peak Boost: 23.2 psi
• Durability: Comes with a long warranty

Key Differences

RPM and Bore/Stroke Ratio

• IndyCar: Higher RPM (12,000) vs. Type-R (7,000)
• Importance of Short Stroke for high RPM (IndyCar): allows lower piston speeds

Specific Horsepower

• IndyCar: 318 HP/L
• Type-R: 153 HP/L
• Boost Correction: Adjusted 312 HP/L for IndyCar after boost correction
• RPM Adjustment: Correcting for RPM differences: 169 HP/L (IndyCar) vs. 153 HP/L (Type-R)

Fuel and Efficiency

• E85 Fuel: Higher octane, allows advanced ignition timing and higher compression ratio
• Type-R: Regular gasoline limits these factors

Performance Management

• Boost Limitation: In IndyCar, power is limited by boost pressure based on race track
• Push to Pass: Temporary boost increase for overtaking, raising peak HP

Experience Highlights

• Belle Isle Grand Prix: Touring the Grand Prix and learning from engineers
• Riding Honda Two-Seater: Experience in the two-seater with Conor Daly

Conclusion

• Different strategies for creating power and engine efficiency
• Emphasis on engine durability between motorsport and consumer vehicles
• Appreciative shoutout to Honda for the experience

Additional Notes

• Availability for questions and comments from viewers

Video Segment

• Coverage of the Honda two-seater ride with Conor Daly at the Belle Isle Grand Prix