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Honda unveils new 3.5-liter racing engine

Honda is following Ford's lead and debuting the second twin-turbocharged V6 to be used by Daytona Prototypes in the United Sports Car Championship. The wait won't be long to see it on track because the new engine will debut with the Starworks Motorsport team in a Riley Gen3 prototype chassis at the 12 Hours of Sebring from March 12-15.
The new HR35TT engine is based on Honda's J35 production V6 found in a variety of its models, including the current Accord. The racing version benefits from dry sump lubrication, but is still similar to the production version with an aluminum block, direct injection and single overhead camshafts. It is fueled by 100-octane E10 fuel, but like many racing engines, exact power figures have not been released.
Starworks has had a close relationship with Honda since it won the LMP2 class at the 24 Hours of Le Mans and in the FIA World Endurance Championship in 2012 with a Honda Performance Development ARX-03b chassis and Honda engine. We can't wait to see this new mill hit the track, and see how it fairs against Chip Ganassi Racing's EcoBoost-powered Riley. Scroll down to read the press release for the full details.

Editors' Choice: Top Five 2015 Frankfurt Motor Show Debuts

Consider the 2015-16 auto show season officially kicked off. The Frankfurt Motor Show offered a great look at the newest crop of production cars and conceptual machines, and brought some old favorites back into the spotlight for a closer look. (The Alfa Romeo Giulia, for example, debuted in June, but this was the first time most of us saw it.) Now that the dust has settled and we're all on flights back to the US, our editors cast their votes for their personal favorites from the Frankfurt show. These are the cars we truly loved seeing the most. But unlike other shows, there was no one runaway winner – all of the Top Five received positive praise from our team. We won't spoil the results, though. Scroll down to see what we liked most from this year's Frankfurt expo. 5th Place – MERCEDES-BENZ IAA CONCEPT View 12 Photos MIKE AUSTIN: The clean lines on this concept have me excited for a more elegant beauty to future Mercedes-Benz vehicles. Next to the Concept IAA, the lovely S-Class Coupe looks like an overstyled barge. DAVID GLUCKMAN: Yeah, the extendable rear is neat and all, but I'm more interested in the front-end styling of this one. It looks like the Tron version of a 300SL, in a good way. I'm hopeful it portends the future of Mercedes design. STEVEN EWING: I was super impressed when Mercedes said that, with the rear end extended, this concept has a drag coefficient of just 0.19. That's crazy aerodynamic. I'm not head-over-heels about the styling, but I think the lessons learned from this concept are really important, and will play a huge role in the future of Mercedes' products. 4th Place – ALFA ROMEO GIULIA View 15 Photos SEYTH MIERSMA: I can hardly express how in love with this car I am. The styling feels creative, modern, and evocative, without going over the top. The proposed performance is spectacular. And the Alfa badge speaks to a legacy of romantic motoring. DAVID GLUCKMAN: Pretty Italian car makes big promises and will probably deliver on about three quarters of them. I think that will still be enough for me. JEREMY KORZENIEWSKI: I'm really intrigued by the Giulia. It looks great, sounds awesome, and I'm expecting it to have a load more character than its German rivals. I hope I'm not disappointed. 3rd Place – JAGUAR F-PACE View 15 Photos GREG MIGLIORE: It's the first SUV for Jaguar, and I think they nailed the design, capability, and electronics. It's the right car at the right time.

Honda ready for 'late 2016' arrival of Clarity Fuel Cell in US

Two years ago at the LA Auto Show, Honda showed off the first concept for what we now know is the Clarity fuel cell vehicle. At the time, Honda said it would arrive at some point in 2015. Since then, Honda has said simply that the Clarity would arrive some time after the March 2016 on-sale date in Japan and even gave itself an out in case the debut slipped to the first half of 2017. Yesterday, at a preview event at the Honda Advanced Design Studio in downtown LA, Honda narrowed that down a bit more to, "late 2016." Honda representatives said this was all still in line with internal targets for the US launch of the car. They already know when the car will arrive here, but are not yet able to say, since things like crash tests and other homologation issues could still change the timeline. The company is happy to see the expansion in the number of hydrogen refueling stations in California and is working a number of dealers in the Los Angeles and San Francisco Bay Area to get them ready to sell the Clarity. Everything that has happened since the company officially set its internal fuel cell clock has been going to plan, Honda representatives told AutoblogGreen. Hydrogen fuel cell vehicles from Hyundai and Toyota are available now, while those from other automakers (like BMW and Nissan) may arrive in or after 2020. Honda still won't confirm, on the record, that an all-electric model will be the third vehicle to use the platform that the Clarity and the upcoming plug-in hybrid (due in 2018) use, as we suspect. But, during a casual discussion about Honda happenings, I heard one executive say that he's busy working on the follow-up "products" that will use the platform, so this remains something to keep in mind. We recently got the chance to drive the Clarity in Japan, which you can read about here.