Showing posts with label coupe. Show all posts
Showing posts with label coupe. Show all posts

Wednesday, January 26, 2011

History: 40 Years of the Z



In the late sixties, the recipe for a great sports car was pretty simple. Give the car a long front hood to bury a powerful inline-6 engine into and a sloping nose for aerodynamics. Place the passenger compartment back over the rear wheels in a coupe silhouette, and if possible make it a 2+2 for added convenience. Finally, direct the power to the rear wheels, design the car to be sleek and tune the engine and suspension to work a little better than your bread-and-butter cars, and you’ve got yourself a winner. This was the plan when two small Japanese manufacturers joined forces in the mid ‘60s to build an affordable sports car. Nissan and Yamaha partnered the project to improve both companys’ images, however by 1964, Nissan was unhappy with the power that the 2.0L DOHC Yamaha engine was producing and the two parted ways. Yamaha would then take the project to Toyota, and soon the iconic 2000GT was the dream of many a driving enthusiast in Japan and all over the world.

Witnessing the success of the 2000GT, then-President of Nissan USA, Mr. Yetaka Katayama felt that there was a need for an affordable sports GT car in the Nissan line-up. The company already had a very popular roadster, the Fairlady, which was inspired by the standard British roadster of the day, only it was vastly more reliable and much better handling. But the company did not have a GT to take on both the British and Italian sports coupes. So it was back to the drawing board with the lessons learned from the Yamaha venture. In 1966, a prototype was mocked up, designed to be stylish, innovative, fast, and relatively inexpensive through the use of interchangeable parts with other Nissan vehicles. Little did they know the importance of what they had created.

The first Z-car, the 240Z, was released to the world in 1969 with two separate models, one for the Japanese market and one for the American market. The Japanese Fairlady Z featured a SOHC L20A inline-6 producing 129 hp, while the American Datsun 240Z featured a 2.4L L24 inline-6 with twin Hitachi SU-type carburetors that produced 151 hp. A third Z, the 432Z shared a performance version of the DOHC 2.0L S20 engine with the Nissan Skyline.

The car’s supercar styling of the day and affordable price tag made it a hit in North America, where it sold 135,000 units under the Datsun name between 1969 and 1973. Despite the differences between the Asian and North American models, all Zs were built at the Nissan Shatai plant in Hiratsuka. Once the American-bound cars arrived, Katayama (aka “Mr. K”) would ensure all Nissan badging would be replaced by Datsun badging before shipment to dealerships. The “240” in the American naming stood for the engine displacement, which was 2.4L.

In 1974, the 240 would become the 260, as Nissan increased the displacement of the inline-6 to 2.6L. Ironically, with new emissions regulations in the States demanding internal modifications to meet the standards, the bigger engine actually produced less power than the 240. Everywhere else in the world the 260Z was a 153 hp sports car, but stateside, the 2.6L was limited to 139 hp, 12 hp less than the 240Z. The new 260Z also had the option of 2+2 seating.

Mr. K wanted to see the 260Z be a proper performance evolution of the 240 in America. So, in 1975, to combat the regulations at that time, the 280Z was introduced only in North America with an even larger 2.8L engine that now could produce the performance the car required to be a proper sports car, and to help move a car that was becoming increasingly heavy with modern luxuries and safety requirements. The new 2.8L would feature Bosch fuel injection instead of carburetion, that would help emissions and produce 170 hp.

A second generation of the Z-cars would come in 1979 with the introduction of the Nissan 280ZX. This was an impressive complete redesign of the styling to bring the iconic ‘60s sports car into the modern era, and a beautiful car it was. Owners still had the choice of 2 or 2+2 seating, as well as an available T-tops roof. Mechanically speaking, the ZX was exactly the same as the American 280Z with its 2.8L and 5-speed gearbox, but Nissan would jump into the popular turbocharging game a year later, producing the 280ZX Turbo which bumped power up to 180 hp and 203 lb-ft. These improvements only strengthened the brand, as Nissan sold 86,000 units in the first year alone.

However in 1984, engine and turbocharging technologies where changing at an ever increasing rate, and it wasn’t long before the 280ZX was replaced with the third generation 300ZX. The new car featured an all-new engine for the first time, a 3.0L V6 dubbed the VG series. In naturally aspirated form, the engine was good for 160 hp, while a turbocharged equivalent fetched an impressive 200 hp. With yet another all-out styling change, the 300 led the futuristic craze, a technique that worked well as Nissan sold another 70,000 units.

The 300ZX would drive on for another six years, with the Shatai plant pumping out 330,000 examples of the third generation. In 1990, the 300 got another makeover, but this time, the car meant business. The fourth generation 300ZX was a sleek and aerodynamic affair that took performance capabilities well past anything the original designers of the 240Z could have imagined. The displacement of the VG engine remained the same; however, with the aid of variable valve timing, the power of the NA jumped to 222 hp and 198 lb-ft, while a new twin-turbo version was pumping out an outstanding 300 hp and 283 lb-ft. The Z had now developed to the point were it wasn’t just imitating exotics, it was now competing with them directly. The resulting impact of these changes meant that American Z-car sales reached the one million mark, making it the all-time best-selling sports car.

With the success of the 300ZX, inevitably the price had to climb, to the point where turbos were fetching over $50,000 USD. The car may have been setting performance records for the company, but the original concept of an affordable sports car for the average man was coming out of touch. Then in 1996, with Nissan in financial troubles and concentrating on building SUVs, the dream came to an end. The iconic Z car was doomed to the same fate that awaited nearly every Japanese sports car and the program was canceled.

Nissan did not take the same direction as the others, however, the company went through some hard times in the late ‘90s and early 2000s, flirting with bankruptcy on a couple of occasions. Then, French carmaker Renault, a company with a history of doing things differently and against the grain, stepped in and bought Nissan in 1999. The charismatic company head, Carlos Ghosn pronounced, “We will build the Z, and we will make it profitable.” And so, the 350Z, then the 370Z with a 3.7L modular V6, was returned to us. It is a car that pays homage not only to the original design of the earlier cars, but also brings back that joy of driving, a characteristic lost in so many of today’s modern cars.

In a time where safety, fuel efficiency, mass appeal and cost of building dominates the makeup of the cars we drive, the modern Z is a joyful release that reminds us what made driving fun in the first place.

Tuesday, August 24, 2010

Review: BMW X6 ActiveHybrid



BMW have dived into yet another segment of the automotive field, that of the hybrid. They are not new to green motoring, as massive amounts of capital and R&D have been invested into the companies successful diesel vehicle lines, while all-electric versions of both BMW's and MINI's are currently undergoing consumer testing for future production. However, the power that a hybrid vehicle has in todays eco-fanatical market is a strong one, one they have now joined.

In typical BMW style, the first hybrid to adorn the spinning blue and white prop badge has a heavy dose of performance injected into the recipe. Hybrids are most often known to be overweight and underpowered vehicles, however the ActiveHybrid X6 is packing 480 hp and an earth moving 575 lb-ft of torque. The ActiveHybrid version of the X6 has made no sacrifices in the name of a eco-friendly monicker. It is exactly the same as the regular 4.4L V-8 powered X6, with the addition of a NiMH (nickel-metal hydride) battery pack located under the cargo area floor, some minor tuning and a hybrid electric propulsion system.

Like many hybrids, the X6 has to deal with the added weight of the extra hardware mounted on board. With all the standard luxuries that you expect with any BMW, the X6 balloons to 2,580 kg in weight, something that does present a handicap in several area's. One area is this has effected is the low speed electric only drive. With a good charge on the battery, the X6 can be driven lightly under purely electric power, up to 60 kmh. However, the added weight makes the technique of keeping as much load off the throttle a tough affair, and only the most patient drivers will be able to get the most out of the batteries charge.

The ActiveHybrid is considered a performance hybrid, however, a hybrids purpose is fuel efficiency. As BMW already have an industry leader in the form of the X5d, the X6 weight strikes once again, as I averaged 12.1L/100km in the X6, and 9.2L/100km in the X5d. As the X5 is by no means a slouch in the performance department as well and has the advantage of more cargo space, better visibility and by my accord, better looks than the X6.We may have ourselves an inter-brand rivalry building here.

While driving in the city may be a tricky affair, in terms of getting the most out of the electric drive, driving on the highway is an absolute pleasure. The steering is as direct and communicative as any BMW, and those seats are the best in the business. The acceleration potential of the X6 is something to behold despite the weight. The big raspy V-8 barks, the electrics spark to life and the big X6 effortlessly powers forward down the road to the surprise of unsuspecting  motorists. But there is a draw back with the X6's abilities. Like most luxury vehicles, the drivers sensation of speed is quite dulled, this matched with massive power, and with three different variables to distribute power, I found that the X6 would often gain up to 40 kmh of speed on the freeway without my knowing. The highly recommended heads-up display showing my speed in the windshield tipped me off to the situation just in time to rectify it before coming across a radar wielding officer.

Likewise, I was unhappy with the brake pedal. A brake pedal in hybrid vehicles is only used to tell an onboard computer how hard you want to brake, it then directs that information to both the regenerative braking system on the electric motors and the actual brakes themselves. As such, the brake pedal has zero feel and pourly connects the driver to the vehicle. It felt like there was a balloon stuck underneath the pedal. Also, I'm never a fan of the active brake force adjustments which changes the force of braking used.

There is no doubt about it, the ActiveHybrid X6 is an impressive bit of kit, and a great vehicle that proves hybrids can be exciting vehicles. However, with the quality of the X5d available for over $30,000 less then the ActiveHybrids $99,900 starting price, it may not be the right choice for those looking for the best fuel efficiency. The  ActiveHybrid will be attractive to those with an insatiable appetite for a high performance crossover, with the unique coupe look couple with the stigma of driving a hybrid. 

Thursday, February 11, 2010

History: A Special Breed

Last year something special rolled across the auction block at Mecum's inaugural Monterey Auction in August. A 1965 Shelby Cobra Daytona Coupe. Accompanied by the it's designer, Peter Brock and the man who piloted the car to an FIA World Sportscar Championship, Bob Bondurant, this special piece of motoring history fetched $7.25 million USD, a new record for an American car sold at public auction. That is a massive amount of money for just on car, so one must ascertain what makes such a car so special to garner such attention.


Much like the birth of Fords GT40, the Daytona Coupe was a product built out of spite for Enzo Ferrari, and their domination of closed top GT racing. The 250 GTO won the World Manufacturer's Championship in 1962, 1963, and 1964. In order to compete with the GTO, Shelby would not only have to build a tin top, but also homologate it, requiring at least 100 examples be built. To get around the homologation issue the Coupe would be built on the original Cobra roadster chassis, which already had its papers and as such was temporarily designate the Shelby Cobra Coupe. Shelby brought in a young designer named Peter Brock to pen the lines of the Coupe, while Bob Negstad was enlisted to design the car's suspension.


It's said that Brock designed the cars silhouette by taking pictures of fellow engineer Ken Miles sitting in a roadster to get dimensions. Brock took these photo's and designed a roof line that would that would support Miles height and foot reach, and when the first copy went to the wind tunnel, the aerodynamics were considered perfect by the team. The problem was getting the car built. The creation of the body had taken so much time due to the exotic shape of the car, there was not enough skilled labour around to build the additional cars needed. Ironically, Italy is full of highly skilled coach builders that could start pumping cars out for the upcoming 1964 racing season. So with that, the original American built Coupe was sent to to Daytona to compete in its first ever race, while five other chassis' were shipped, even more ironically, to Modena, Italy where Carrozzeria Grand Sport would go on to build the rest of the six Coupes. Ironic since the remaining Daytona's were built a mere 17 km from the Ferrari headquarters, the heart of all Italia.


Meanwhile, back in Daytona, the Shelby Cobra Coupe had just won the GT class in its first ever race prompting Carroll Shelby to name the car the Daytona, and ever since the car has affectionately been know as such. The Daytona would go on to win the 1964 24h of Le Mans and 12h of Sebring, narrowly missing the overall championship won by the hated Ferrari GTO due to a cancelled race. This prompting Shelby to famously declare, “Next year, Ferrari’s ass is mine!”


1965 would see Team Shelby commit an all-out attack on the championship, now armed with four examples of the Daytona. The season was shaping up to be a great war of rivals, however the Ferrari factory decided to limited involvement in the GT category, choosing to concentrate on the more prestigious prototype category. Without the full backing from the Ferrari factory the Daytona would go on to win nearly every race to take a commanding championship win over the GTO. It is this conquering of the most feared force in sportscar racing which gives the Daytona its prestige, even if time has forgotten a few poignant details.


However, the story of the Daytona does not end here. 1965 was also a year that Goodyear was hoping to break several landspeed records with their tires. They had Bonneville scheduled in September but did not have a car, while Firestone was waiting in the wings to also take some records for themselves. A call to Shelby procured the original American built Coupe for use in the task, but with the car fitted with tires ready on the salt flats, a driver was still needed. Craig Breedlove just happened to be hanging around the area after making some speed record attempts in a jet powered car, and was enlisted to drive the Daytona last minute. After mechanics showed Breedlove how to shift the car and some minor tweaking, he went out and set 23 new records for both the tires and the Daytona.


After 1965, the Daytona was obsolete as a top level racing car, and the Shelby team's attention was shifted to improving the GT40 with a MkII variant. So with that, the Daytonas were sold off to collectors, while the lone American built car went to music producer Phil Spector. Spector was known in LA well for always racing his Daytona Coupe through the streets, collecting several speeding tickets along the way. He had so many that his lawyer demanded that he sell the car or risk loosing his license. So, he sold it to his body guard, who would later give it to his daughter Donna O'Hara as part of a divorce settlement. Well, Donna would go on to become a recluse and with the Daytona, disappeared from the public in the mid-70's. For thirty years collectors and historians feared the car lost forever when Donna's body was found, apparently deceased as a result of suicide. The lost Daytona was then discovered in a rental storage unit in California and after a long legal battle, sold to a collector in Pennsylvania.


The Daytona's life was lived hard and fast, it was hand-built, with an illustrious history full of fierce rivalry, irony, great victories and defeats, while creating great stories of survival. It is these attributes that make such a car so special while such small numbers make it the dream car of even the richest of collectors. An icon so attractive, that it forced one man to part with $7.25 million USD.

Thursday, July 16, 2009

Review: BMW Z4 sDrive35i



BMW’s last version of the Z4 had two different variants, a ragtop roadster and a hardtop coupe. With the second iteration of the Z4 now upon us, BMW have taken a slightly different path. The two different versions have now been merged into one. A hardtop roadster that can be a coupe when weather turns nasty, or an open-top roadster when cruising under the sun.

 

Now, there are several problems that usually come with employing a retractable hardtop. The first is the look. Retractable Hard-Top Vehicles, or RHTV’s as I will call them, tend to look good in one guise, and look a little off when transformed. I must admit that the Z4 seems to have pulled off an exception to this trend, as it loo

ks great in any guise. Not to mention both the interior and shapely new exterior styling are quite captivating, and intriguing. The new design gives the car a more stylish and refined look to match its sporty character.

 

The second problem with a RHTV is storage space. That big roof has to go somewhere, and trunk space is almost always the sacrificial lamb. The Z4 is no different here as the 310 L of truck space is reduced to 180L with the roof packed away. Now for two people packing light for two weeks, we were just able to get the roof down. However, lazy in packing and some souvenirs soon meant the roof was stuck in coupe configuration.

 

Finally the third problem is body rigidity. So often, convertibles fail miserably here, however the Z4 was an impressive surprise. With the roof up, the body felt as rigid as any coupe, but the big surprise was with the roof down. Without the support of the roof reinforcements, the increase in body flex was nominal, and barely noticeable. And body rigidity is an important part of the performance of this car. It is BMW’s only real sportscar after all. So how does it go down the road, you ask? Well, like a bat out of hell, I say!

 

I had the great fortune to be able to test the Z4 in just about the greatest place possible, the Alps. Pulling away from Munich on the A8 Autobahn, it seemed a good time to find out the cars top speed. With the 300 hp 3.0L inline 6 of the sDrive35i at full howl with both turbos glowing red, 256 km/h is what the dash told me as we gobbled up tremendous amounts of terrain per second, the car always giving a planted and confident feeling.  All well and good, but a sportscar is all about the curves. While I was already impressed by the cars curves, I am now talking about the ones in the road.


Entering into the Alps, I headed off to sample several famous passes, riddled with dangerous corners and life ending drops. Childs play for the Z4. The cars balanced chassis and brakes are magnificently tuned to absorb any kind of abuse the Stelvio or Furka could throw at it. Interaction and communication between car and driver needs no translation, as the Z4 quickly becomes an extension of your own extremities. However, the biomechanical feeling seemed to short circuit when it came to the electrical side of the equation. Now I am one who likes to have full mechanical control over a car, but the Dual-Clutch 7-Speed automatic and electronically controlled Limited slip did tend to dull driver control when approaching the vehicles limits, despite their inherent increase to the vehicles performance. That being said, the Z4 sDrive35i still represents one of the most complete sportscar available today.

 


 

Specs:

MSRP: $61,900

Price as tested: $

Layout: Front Engine – Rear Wheel Drive

Engine: 3.0L Twin turbo Inline-6

Transmission: 7-Speed Automatic Dual Clutch with manual shift

HP: 300

Torque: 300

Brakes: Four-wheel Disc

Curb Weight: 1,585 kg

Towing Capacity: NA

0-100 km/h: 5.2 sec

Fuel Economy (city/hwy): 12.2/8.2L/100km