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Acura NSX GT3 racecar bares all in raw carbon

Acura slowly and dramatically revealed the NSX over a period of years. There were previews, concepts, and lots of teases before Acura finally showed us the whole thing. It's a different story for the racecar. And today, the wraps come off the FIA GT3-spec NSX to show all of its bare-carbon glory. The NSX GT3 strips away more than just the paint from the standard road car. The racecar comes sans hybrid system, meaning all the power from the twin-turbocharged 3.5-liter V6 is sent solely to the rear wheels. Modifications to the body include a large rear wing, underbody diffuser, and bigger hood vents for engine cooling. While the hybrid system may be gone, the NSX GT3 uses the same block, heads, valvetrain, crankshaft, pistons, and dry sump lubrication system as the road car. Power is sent through a six-speed sequential gearbox instead of the road car's nine-speed. The NSX GT3 will be built alongside the street version in Ohio. Honda engineers in Japan and North America shared in the development. Final GT3 homologation will be completed by the company's Honda Performance Division in Santa Clarita, CA. Related video:

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.

Zipcar, Honda announce OneWay carsharing with 2015 Fit

Zipcar has been around for over a dozen years, and now shares more than 10,000 cars on a short-term basis with 850,000 members around the world. But there's been one thing missing from the carsharing giant's quiver of options: the one-way rental. That changes today. For a select few in Boston, anyway. OneWay's Boston launch is so soft that Zipcar says it's not even sure how much it will charge. Zipcar has announced a new one-way carsharing option called (annoyingly) ONE>WAY. This new program soft launches in Boston today, and it's so soft that Zipcar says it's not even sure how much it will charge drivers who use the new service. What we do know is that OneWay exclusively uses the 2015 Honda Fit and will allow drivers to rent by the half hour as they pick up and drop off in two different locations. The standard Zipcar model requires the cars to be brought back to the original location and has a one-hour minimum. At least one membership fee will cover both standard Zipcar and Zipcar OneWay. The introduction of shorter-term, one-way rental may sound a bit like Car2go, the successful carsharing program started by Daimler. Zipcar representatives told AutoblogGreen that it did develop OneWay in response to member demand and that there are two main differences between the two carsharing services. First, since OneWay still uses the traditional reserved-for-Zipcar parking spot method (new ones will be established for OneWay), there will always be a guaranteed space when you arrive at your destination. Second, the Fit has a lot roomier than the Smart ForTwo used by Car2go. To see this point in action, check out the four happy hipsters in Zipcar's new ad for OneWay below. There are currently other Fits in Zipcar fleets in other cities, but the specially branded vehicles in the Boston trial program will need to be used with the OneWay vehicles. That means, for now at least, that users will specify a pick-up and drop-off location before renting the vehicle, said Kaye Ceille, the president of Zipcar. The 30-minute minimum might also someday be changed, depending on user feedback. There's a lot up in the air right now, but Zipcar did say that despite the fact that OneWay is intended for short trips and has reserved parking, the Fit EV will not be involved. That car simply doesn't offer the cargo flexibility that the standard Fit does and some of the reserved parking spots will be on the street, where putting in a charging station isn't feasible.