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2020 Acura NSX Suspension Deep Dive

The Acura NSX has been a special car as long as I’ve been in the business. The first one came out in 1990, the same year I started my career in automotive engineering. I vividly remember driving one briefly back then when we brought one in for benchmarking. I'd drive it again 22 years later when my previous employer bought a used 1991 example for a long-term test. Reader interest was sky-high and the car was still gorgeous, but the march of time and automotive engineering had clearly left it behind. Then, in 2016, a second-generation NSX emerged, and it was packed with bleeding-edge thinking. It has a 3.5-liter twin-turbo V6, but this new NSX is a hybrid with an electric motor-generator sandwiched between the engine and its nine-speed DCT transmission. Two more electric motors – one for each wheel – power the front axle. There they can add traction, regenerate electricity under braking and dole out hyper-accurate levels of torque vectoring. The carÂ’s tire package was changed from Continental SportContact 5 to SportContact 6 tires in 2019, and numerous suspension re-tuning tweaks came along with them. The result is a lively and well-balanced car that is relentless when driven hard and a pussycat around town. LetÂ’s see what theyÂ’ve got going on under there.   At first glance the 2020 Acura NSX appears to have dual wishbone front suspension. But we canÂ’t tell for sure because that big two-piece brake rotor is in the way. The coil-over shock looks obvious, but a few odd details are apparent even from here.   This view also seems to indicate double wishbone suspension. But the pivot axis (green arrow) between the upper and lower ball joints looks wrong – itÂ’s far too vertical. WeÂ’re missing something. But I would be remiss if I failed to point out a few other things before we moved on. For one, the front drive axle confirms this to be an all-wheel-drive machine. Second, the forged aluminum damper mounting fork (yellow) that envelops the axle is mounted to the lower arm about 75% out from the armÂ’s inner pivot. The spring and damper motion ratio would be 0.75-to-1 relative to wheel movement, with a tiny reduction due to its lean angle. Lastly, just look at the huge cast aluminum upright (white). Beautiful. Normally these are called hub carriers or steering knuckles, and I use the terms interchangeably. But the motorsports-derived term upright is normally applied when the piece is tall and, well, upright like this one.   This explains everything.

Honda recalls 2.23 million vehicles to replace Takata inflators

The Basics: Honda and Acura will recall 2.23 million vehicles in the US. The affected models are: 2005-2012 Acura RL 2007-2011 Honda CR-V 2007-2016 Acura RDX (early production MY 2016 vehicles only) 2007-2014 Honda Ridgeline 2009-2014 Honda Fit 2009-2014 Acura TL 2010-2014 Honda FCX Clarity 2010-2014 Honda Insight 2010-2013 Acura ZDX 2011-2015 Honda CR-Z 2013-2016 Acura ILX (early production MY 2016 vehicles only) The Problem: These vehicles have Takata's PSDI-5 airbag inflator on the driver's side, and this part could rupture if the airbag deploys. Injuries/Deaths: There are no reported ruptures of the PSDI-5 inflator in Honda or Acura vehicles. However, Takata's exploding components have links to at least 10 deaths worldwide because they can spray shrapnel at occupants. The Fix: Honda and Acura dealers will replace the inflators with parts from an alternative supplier. If You Own One: The repairs will begin this summer. Owners will receive a letter notifying them about the recall within 60 days and will get a second message when the parts are available. The company will prioritize older models in high-humidity regions first because these inflators would be most likely to rupture. More Information: Honda and Acura have now recalled 8.51 million vehicles in the US to replace their driver or passenger side inflators. This latest expansion came in the wake of a driver death from an airbag rupture in a Ford Ranger. Ford and Mazda already enlarged their safety campaigns. The National Highway Traffic Safety Administration also announced Audi, BMW, Daimler Vans, Mercedes-Benz, Saab, and Volkswagen would have recalls for this issue, too. Statement by American Honda Regarding Nationwide Recall of Certain Takata PSDI-5 Driver Front Airbag Inflators Feb 3, 2016 - TORRANCE, Calif. Approximately 2.23 million Takata PSDI-5 driver front airbag inflators will require replacement in Honda and Acura vehicles in the U.S. No PSDI-5 inflator ruptures have been reported in Honda or Acura vehicles Takata inflators will be replaced with parts from an alternative supplier with repairs beginning in the Summer of 2016 Based on a recent Defect Information Report (16E-005) from the airbag inflator supplier, Takata, Honda will conduct a national recall (16V-061) of approximately 2.23 million Honda and Acura vehicles in the United States to replace, free of charge to vehicle owners, the PSDI-5 Takata driver front airbag inflators installed in those vehicles.

2021 Acura TLX Type-S to be powered by 355-horsepower V6

The 2021 Acura TLX Type-S is on track to deliver 355 horsepower, Honda's luxury subsidiary said Thursday, floating the power figure in an announcement that a prototype of its new sport sedan will serve as the pace car for the 2020 Pikes Peak International Hill Climb on August 30. The 3.0-liter V6 will also boast 354 pound-feet of torque, Acura said. These figures put it in the heart of the midsize performance sedan category, alongside the likes of the Cadillac CT5-V (360 horsepower) and Audi S4 (349 horsepower); BMW, Mercedes-Benz and Infiniti all offer more. The 2021 TLX sits on a new, stiffer platform and marks the return of a double-wishbone front suspension.  2021 Acura TLX to Make Racing Debut at Pikes Peak International Hill Climb "Racing is a key expression of Acura’s Precision Crafted Performance DNA. For the past nine years, Acura has utilized the grueling Pikes Peak hill climb as an opportunity to grow the skills of the companyÂ’s young engineers and as a test bed for future performance technologies in Acura production vehicles. The Acura Pikes Peak race team is comprised of a group of volunteer R&D engineers and is responsible for all aspects of the competition, including the development of vehicles, race prep, crew support and navigating race cars to the finish line," Acura's announcement said.  Acura will field two TLX race cars in the Exhibition class at Pikes Peak. Both will be powered by the base, 2.0-liter turbocharged four-cylinder. Based on the company's announcement, it appears that one will be front-wheel drive and the other equipped with Acura's Super Handling All-Wheel Drive (SH-AWD), which is standard on the Type S. This engine makes 272 hp in street tune, but the race cars have received upgrades. The SH-AWD model boasts a larger turbocharger and intercooler for additional power, while the front-wheel-drive model received a milder tune and some suspension tweaks. A Time Attack NSX piloted by James Robinson will accompany the sedans. The Type-S will serve only as a pace vehicle, not a competitive entry.  Related Video: