Honda Indy V8
|Honda Indy V8|
|Configuration||V8 normally-aspirated, 90° cylinder angle|
|Displacement||3.5 L (3,500 cc; 214 cu in) (HI3R and HI7R)
3.0 L (3,000 cc; 183 cu in) (HI4R and HI5R)
|Fuel system||Fuel injection|
|Fuel type||100% fuel grade Ethanol provided by Sunoco|
|Power output||650-670 hp (485-500 kW) depending on push to pass mode @ 8000-10300 rpm|
|Torque output||Approx. 430 N·m (317 ft·lbf) @ 8000 rpm|
|Dry weight||280 lb (127 kg)|
|Successor||Honda Indy V6|
The Honda Indy V8 engine is a 3.5-litre normally-aspirated V8, produced by HPD-AHM Co. for IndyCar Series. Honda Indy V8 was a highly-success IndyCar Series engine supplier from 2003 to 2011 seasons before replaced by Honda Indy V6 at the following season.
1st Generation (2003)
Honda debuted IndyCar Series as engine suppliers in 2003 season after a CART successful era. Designated as HI3R. HI3R's capacity was 3.5-liter. Honda supplied Andretti Green Racing, Team Rahal, Fernández Racing and Access Motorsports teams. Honda's 2003 stats were 3 pole positions, 6 fastest laps and 2 wins.
- Dallara IR3
- G-Force GF09
2nd Generation (2004-2006)
Honda entered second season with great success in IndyCar Series. Designated as HI4R and HI5R. HI4R and HI5R's capacity was 3.0-liter. Honda was clearly dominant engine, scoring 33 poles, 35 fastest laps, 41 wins totally in three seasons including 3 Indianapolis 500s. Since Chevrolet and Toyota leaves IndyCar Series after 2005 season, Honda won exclusive tender IndyCar Series engine supplier for 2006 to 2011 season.
- Dallara IR4
- Panoz GF09B
- Panoz PZ09C
3rd Generation (2007-2011)
This family was designed as a replacement for the HI5R but enlarged to better accommodate variable valve timing and Active Fuel Management while still generating good performance. HI7R's capacity reverted to 3.5-liters respectively since 2007 season. HI7R engine suppied for all IndyCar Series teams. HI7R was highly-successful engine with 86 pole positions, fastest laps and wins respectively including 2008 Nikon Indy 300 exhibition race and 5 Indianapolis 500s. Due to IndyCar Series chassis and engine development freeze since 2008, IndyCar Series keeps Honda HI7R model until 2011 season due to citing costs.
During that time, since the IndyCar Series had only one engine manufacturer, Honda focused on minimizing engine failure and minimizing costs instead of defeating rivals. As such, the engines were moderately de-tuned. The engines proved themselves to be quite durable—there had been no engine failures at Indy from 2006 to 2010, which also lowered the number of crashes. Most of the engines, including those used for the Indy 500, are used for multiple races and were intended to last 1,200 miles (1,931 kilometers) between rebuilds. The Honda engines were only available via lease arrangement from Honda, which, for the 2010 full season, cost $935,000 U.S. per season, per car.
IndyCar Series engines are rev-limited to 10,300 rpm and produce approximately 650 hp. The valve train is a dual overhead camshaft configuration with four valves per cylinder. The crankshaft is made of alloy steel, with five main bearing caps. The pistons are forged aluminum alloy, while the connecting rods are machined alloy steel. The electronic engine management system is supplied by Motorola, firing a CDI ignition system. The engine lubrication is a dry sump type, cooled by a single water pump.
- Type: Aluminium alloy cylinder block V8
- Manufacturer: Honda Performance Development
- Designation: HI7R
- Configuration: V8 engine, 90° cylinder angle
- Displacement: 3.5 L (3,500 cc; 214 cu in)
- Valvetrain: 32-valve dual-overhead cam (DOHC)
- Bore diameter: 93 mm (4 in)
- Aspiration: Normally aspirated (no turbocharger)
- Weight: Minimum dry weight is 280 lb (127 kg) - no headers, clutch, ECU, spark box or filters
- RPM rev limit: 10300 rpm (league-supplied rev limiter)
- Power output: 650-670 hp (485-500 kW) depending on push to pass mode @ 8000-10300 rpm
- Torque: Approx. 430 N·m (317 ft·lbf) @ 8000 rpm
- Maximum speed: 235 mph (378 km/h)
- Fuel: 100% fuel grade Ethanol provided by Sunoco
- Fuel delivery: Fuel injection
- Crankshaft: Alloy steel, 5 main bearing caps
- Pistons: Forged aluminium alloy
- Connectiong rods: Machined alloy steel
- Filter: K&N Engineering
- Lubrication: Dry sump
- Oil vendors: PEAK Antifreeze, Pennzoil Ultra (Team Penske)
- Cooling: Single water pump
- Injector: Electronic
- Battery: Bosch 12 volts
- Spark Plugs: NGK
- Engine management: Motorola (2003-2010), McLaren TAG-400i (since 2011)
- Ignition: CDI
- Dallara IR-05
On February 10, 2012 Honda Indy V8 was honoured as "North American Race Engine of the Year" by Race Engine Magazine.
- "IRL to revert to 3.5-litre engines". Autosport (Autosport.com). August 31, 2006. Retrieved August 31, 2006.
- Reitz, Victoria (2006-05-25). "Leveling the playing field". MachineDesign.com. Retrieved 2003-04-13.
- "IndyCar confirms rule changes, cost savings". Racer.com. 2010-01-12. Retrieved 2010-08-23.
- "IndyCar Series Technical Update Press Conference". IndyCar.com. 2007-02-22. Retrieved 2010-08-23.
- "IndyCar Series 2007-2011 Specifications". indycar.com. 2008-03-01. Retrieved 2008-03-01.
- "Honda Indy V8 Honored by Race Engine Magazine". http://www.honda.com. 2012-02-10. Retrieved 2012-02-10.