Why not a Version of The Indy Engine in the C8

[SheepDog]

Each Chevrolet Entry In The Indy 500 Has Its Own GM-Installed Engineer

3

• BY SAM MCEACHERN
• — MAY 16, 2019

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General Motors supplies just nine full-time NTT IndyCar Series drivers with its Ilmor-Chevrolet engine, but for the Indianapolis 500, that number grows to 18.

GM is well-prepared for the Indy 500 each year, making engine allocation a fairly straightforward task, Chevrolet IndyCar program manager Rob Buckner told RACER in a recent interview. What’s never easy, though, is managing all the personnel required to ensure the engines run as designed, as every single Chevrolet car gets its own GM-installed engineer.

“Since our engines are built in Michigan and only a five-hour drive away, logistically, the engine delivery to Indianapolis area is relatively painless,” Buckner told the publication.

“Our bigger challenge is staffing each entry with a Chevrolet engineer, as we have expanded from nine full time cars to 18 Indy 500 entries,” Buckner added. “To accomplish this, we have pulled people familiar with our program from all over, and we are very appreciative of their commitment to the program.”



Of course GM also has to have spare motors on hand, as some cars may encounter mechanical issues in practice or qualifying, or become damaged in a crash. Two-time Formula 1 World Champion Fernando Alonso has moved onto a spare car and taken a new Ilmor-Chevrolet engine after wrecking hard in practice earlier this week. Dreyer-Reinbold’s Sage Karam has also taken a new engine already this week after his engineers found an undisclosed problem with the 2.2-liter twin-turbo V6.

Making things a bit busier for Chevy is a rule that allows teams to put a new engine in the car for race week. Once qualifying concludes on Sunday, teams are allowed to take out the old Chevrolet engine and put a new one in for the remaining practice sessions and/or for the race. Some of the Indy 500-only competitors will only have one motor for the event, though.

“The Indy 500-only entries will start with a fresh engine and typically stay on that engine throughout the event,” Buckner explained.



Qualifying for the 103^rd running of the Indianapolis 500 will kick off Saturday, May 18^th before the race goes green on Sunday, May 26^th.




Read more: http://gmauthority.com/blog/2019/05/...#ixzz5oClEJLuY

[SheepDog]

Will the indy engine and c8 dohv have anything in common? Is the blacking related?

[meyerweb]

The Indycar engine is a 2.2 liter twin turbocharged V6. Don't think that would really fly with Corvette buyers.

It also runs on E85, (15% high octane racing fuel, too, not pump gas) which isn't readily available in much of the U.S. On pump gas boost would be much more limited, reducing HP. And asking it to last for 100,000 miles or more would require even less boost.

https://en.wikipedia.org/wiki/Chevrolet_Indy_V6

[SheepDog]

The Indycar engine is a 2.2 liter twin turbocharged V6. Don't think that would really fly with Corvette buyers.

It also runs on E85, (15% high octane racing fuel, too, not pump gas) which isn't readily available in much of the U.S. On pump gas boost would be much more limited, reducing HP. And asking it to last for 100,000 miles or more would require even less boost.

https://en.wikipedia.org/wiki/Chevrolet_Indy_V6

You are 100% right. Nevertheless this kind of is made to work. It is an adaptation. Aston Martin and AMG are doing it, in one way or another. It would do wonders? for Corvette's increasing image.

Aston Martin's Valkyrie Will Have a 1000-HP V12 That Revs to 11,100 RPM


Cosworth truly worked some magic here. Listen to this animal of an engine.

BY CHRIS CHILTON
DEC 12, 2018[IMG]https://hips.hearstapps.com/hmg-prod.s3.amazonaws.com/images/am-valkyrie-engine-cdean-smith-10-1544624909.jpg?crop=1.00xw:0.753xh;0,0.110xh&resiz e=480:*[/IMG]
DEAN SMITH/ASTON MARTIN

Aston Martin’s Valkyrie V12 makes a Honda VTEC seem about as free spinning as a Duramax diesel. Developed by legendary engineering house Cosworth this naturally aspirated 6.5-liter V12 develops 1000 horsepower at 10,500 rpm and doesn’t stop spinning until the hard limiter kicks in at 11,100rpm. Yeah, 11,100rpm.


"If you don’t come away frightened there’s something wrong with you," laughs Cosworth MD Bruce Wood as he leads us into the control room to hear the engine run through a simulated lap of Silverstone on the dyno. Frightened? If I’d had a can of mace I would have been spraying so hard the whole room would have looked foggier than a Victorian night in London. This thing sounds like pure evil. And it’s not just the shriek; a sonic portal back to Sundays spent watching Formula One in 1995. It’s how quickly it spins up as it runs though its Ricardo-built single-clutch transmission.
[IMG]https://hips.hearstapps.com/hmg-prod.s3.amazonaws.com/images/am-valkyrie-engine-cdean-smith-3-1544624909.jpg?crop=1xw:1xh;center,top&resize=480: *[/IMG]
DEAN SMITH/ASTON MARTIN

The philosophy couldn’t be more different from the one being used to create the engine for the AMG One just a few miles from Cosworth’s base. While the AMG’s turbocharged 1.6-liter V6 gives it a clear link to current F1 tech, the Valkyrie’s V12 feels peculiarly un-zeitgeisty, clearly harking back to the glorious mid-1990s days of V12 F1 cars. No surprise, given the creative force behind the Valkyrie and its powertrain is legendary F1 engineer, Adrian Newey.

"This is a very personal project for Adrian," says Wood, who diplomatically describes Newey as ‘quite demanding’ in the way Pol Pot might have described him as having ‘a bit of a t
[IMG]https://hips.hearstapps.com/hmg-prod.s3.amazonaws.com/images/am-valkyrie-engine-cdean-smith-11-1544624909.jpg?crop=1xw:1xh;center,top&resize=480: *[/IMG]
DEAN SMITH/ASTON MARTIN

"Adrian and Red Bull originally came to us asking for a 6-liter V12 developing 950bhp, and it would have been easy to reach these power targets by going the turbocharged route," says Wood, whose company’s back catalog includes iconic blown motors like the YB in the Ford Sierra and Escort Cosworth.

"But no matter how good they are, there is always an element of turbo lag and a loss of sound quality. There are packaging problems too. But ultimately, we felt, and Adrian felt, that if your main objective is the driving experience then the best option is a naturally aspirated V12."
[IMG]https://hips.hearstapps.com/hmg-prod.s3.amazonaws.com/images/am-valkyrie-engine-cdean-smith-7-1544624906.jpg?crop=1xw:1xh;center,top&resize=480: *[/IMG]
DEAN SMITH/ASTON MARTIN

Unfortunately for any of you billionaires reading looking for the ultimate hypercar driving experience, the Valkyrie won’t be coming to the US, at least not officially. Even at a rumored list price of around $3m for each of the 150 cars (which are all sold anyway), the costs of homologating for the US market were deemed too expensive.

So here’s what we’re missing:

For a start, like most high-level racing motors and Ferrari’s F50 V12, but almost no other road cars, the engine is a structural component of the car. Those giant ears on top of the cam covers are where it bolts directly to the back of the carbon monocell.
[IMG]https://hips.hearstapps.com/hmg-prod.s3.amazonaws.com/images/am-valkyrie-engine-cdean-smith-24-1544624911.jpg?crop=1xw:1xh;center,top&resize=480: *[/IMG]
DEAN SMITH/ASTON MARTIN

There’s more. To save weight and reach Newey’s ambitious 441lb weight limit there are no liners, just a plasma coating on the cylinder walls. And the four cams (each featuring variable valve timing, but not variable lift, which can’t react fast enough) are driven by gears, not chains, just like a proper racing engine. ‘You can’t guarantee the reliability of chains beyond 10,000rpm,’ says Wood.

But because cam gears whine and rattle, and the back of the carbon chassis tub separating the cockpit from the engine bay acts like a giant drum skin enhancing sounds, it would have been too noisy. So Cosworth pushed the chains to the back of the engine. That added a few ounces, but even the finicky Newey agreed it was for the best.

And then there’s the hybrid element, a single-motor F1-style KERS system developed by Croatian firm Rimac. Officially, Aston isn’t yet saying exactly how much, but an Aston sourced hinted at around 125bhp. But unlike the AMG, which uses four electric motors, two of which drive the front wheels, the Aston is rear-wheel drive, sending both power outputs to the rear axle. There’s no EV mode.
[IMG]https://hips.hearstapps.com/hmg-prod.s3.amazonaws.com/images/am-valkyrie-engine-cdean-smith-37-1544624915.jpg?crop=1xw:1xh;center,top&resize=480: *[/IMG]
DEAN SMITH/ASTON MARTIN


Wood claims that Cosworth shied away from using the latest sci-fi materials whose reliability wasn’t wholly known, preferring to use the best of established stuff. So there’s aerospace quality alloy heads, and titanium rods and valves, but it’s all proven tech. And while the engine lifespan isn’t going to worry a small-block Chevy, Aston’s V12 will last at least double the 31,000 miles AMG says it’s motor will need between rebuilds. Maybe more, according to CEO Andy Palmer:

"Our expectation is that by 100,000km (62,000 miles) it won’t have blown up, but some of the components will be worn out," says Wood, before adding: "not that many owners will ever get anywhere near that figure."

But Cosworth subjected the engine to over 200 hours of dyno testing (‘much of it at full throttle’) to make sure they would last the course without needing a tear-down after every third Sunday drive. The service requirements are relatively modest give the spec, comprising an oil change every 3-4000 miles.
[IMG]https://hips.hearstapps.com/hmg-prod.s3.amazonaws.com/images/am-valkyrie-engine-cdean-smith-40-1544624916.jpg?crop=1xw:1xh;center,top&resize=480: *[/IMG]
DEAN SMITH/ASTON MARTIN

There’s much more detail to come about areas like the torsion bar suspension, the hybrid system, the aerodynamics and, of course, performance, which Aston admits, is massively focused on lap times and not standing start acceleration. But for now, just take another listen to that screaming naturally aspirated V12. It’s the sound of a near-dead technology rising up for one last epic battle, like the monster in a zombie flick mustering the energy for a final attack the moment your back is turned. It’s the sound of a world of car fans acknowledging that we’ve lost something in the switch to turbocharged power. Drink it in because it’s unlikely we’ll ever hear anything like it again. Listen to the Aston Martin Valkyrie's V12
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[meyerweb]

If GM wants a 1000 hp motor, I think it would be more effective to start with something like the Blackwing V8 than a pure racing engine.