Kakimoto NSX by SpeedHunters
345hp @ 6,900rpm, 362.8Nm (267.6 lb/ft) @ 5,900rpm
ø92 mm forged pistons, stock titanium connecting rods, balanced stock crankshaft, upgraded oil pump, custom profiled intake and exhaust camshafts (IN: P233º 9.3 mm lift, Hi295º 12.5 mm lift, S238º 9.7 mm lift – EX: P238º 8.4 mm lift, Hi 288º 12 mm lift, S243º 8.7 mm lift), strengthened valve springs, C32B intake valves, C32B head gasket, Kakimoto custom exhaust manifolds, Kakimoto custom exhaust system, ø48 mm six-throttle conversion, custom velocity stacks, carbon fiber airbox with titanium intake pipe, 370 cc/min injectors, Nismo high pressure fuel regulator, BNR34 in-tank fuel pump, custom collector tank, NGK #8 racing plugs, ARC racing radiator, Setrab oil cooler, Motec M84 ECU
NA2 six-speed transmission, Exedy twin plate metal clutch, lightened flywheel, 4.643 final, ATS 2-way meal LSD, Kakimoto custom-made transmission oil cooler with custom baffling and intakes
Kakimoto custom front tubular subframe/chassis, custom front suspension pick-up points, Kakimoto original adjustable suspension, Eibach 8.9kg/mm front springs, 23.2kg/mm rear springs, Kakimoto custom adjustable suspension arms all round, Endless six-pot front calipers, Endless front ø370 mm two-piece rotors, Brembo F360 four-pot rear calipers, Brembo ø340 mm rotors, Brembo single pot e-brake caliper, AP Racing master cylinder, Tilton brake balance adjuster
Rays Engineering Volk Racing CE28N 18×8.5 +30 (front), 18×10.5 +18 (rear), Kumho 245/35R18 (front), 285/30R18 (rear)
Kakimoto front lip spoiler/diffuser, Kakimoto front canards, Front wide body aero, Kakimoto rear bumper, rear trunk NACA ducts, carbon GT-Wing, Speed Glass lightweight front windscreen, Rasty lexan rear hatch glass, lexan glass all round, custom flat underfloor
Custom welded and riveted roll cage, Recaro SP-G bucket seat, Simpsons racing harness, Momo racing steering wheel, custom dash with Defi gauges (tachometers, water temp, oil temp, oil pressure), Defi Advance ZD multi display meter, custom center console, custom carbon switch panel, Neko Corporation LCD600 digital display, ATL Fuel gauge
A Car Dear to my Heart - Gordon Murray on the Honda NSX
This article, originally hosted on Honda.co.jp, was translated from Japanese to English. Original Japanese article is here.
This is a fantastic and insightful piece; it allows the reader to better understand the mind of Gordon Murray and see what influence the NSX had on the design of the McLaren F1.
To this day, the NSX is still a car that is near and dear to my heart. I put 75,000 Km on my NSX over the course of six or seven years.
It’s very difficult to discuss the NSX using current values and sensibilities. When the NSX debuted, the word “supercar” was still a relatively new idea in Europe. There are some who would say the Lamborghini Miura from the late 1960s was the first supercar. However, the truth is the explosion of modern supercars really started at the end of the 1980s.
At the end of the 80s was the time when McLaren Cars was conceiving the idea for the McLaren F1. To that end, I was concentrating on coming up with what I wanted in a road car.
To my thinking, the ideal car is one in which I could get in the driver’s seat and be out for a drive in downtown London and then want to continue straight on to the South of France. A car that you can trust, with functional air conditioning and retains daily drivability. No offset pedals allowed. No high dashboards restricting your view either. Having a low roof hitting your head every time you go over a bump in the name of aerodynamics and styling is out of the question. It is essential that a supercar be a pleasure to drive, and anything detracting from that must be excised.
I started by driving the cars known then as “supercars.” The Porsche 959, Bugatti EB110, Ferrari F40, Jaguar XJ220. Unfortunately, none of these fit the pattern of the supercar we were trying to build. What we wanted was a relatively compact, usable driver’s car. The Porsche 911 had the usability, but with the engine packed in the back, it had a weakness in its handling stability.
During this time, we were able to visit with Ayrton Senna (the late F1 Champion) Honda’s Tochigi Research Center. The visit related to the fact that at the time, McLaren’s F1 Grand Prix cars were using Honda engines.
Coincidentally, I spotted an NSX prototype parked near the course. I also learned at the time that Ayrton was assisting in the development of the NSX and that Honda rear mid-engined sports car–the NSX–was the friendly supercar that we had been looking for. This car had perfectly functional air conditioning, a reasonably roomy trunk and of course, it was a Honda, with the high levels of quality and reliability that implies.
Then I had the opportunity to drive it. Along with Ron Dennis (President, McLaren Cars) and Mansour Ojjeh (Tag McLaren Group Representative), we drove the prototype on the Tochigi Research Center test course. I remember being moved, thinking, “It is remarkable how our vision comes through in this car.”
Of course as you know, the engine has only six cylinders; however, the NSX’s very rigid chassis is excellent and would easily be capable of handling more power. Although it’s true I had thought it would have been better to put a larger engine, the moment I drove the “little” NSX, all the benchmark cars–Ferrari, Porsche, Lamborghini–I had been using as references in the development of my car vanished from my mind. Of course the car we would create, the McLaren F1, needed to be faster than the NSX, but the NSX’s ride quality and handling would become our new design target.
When working on the development of a new car for years, it’s easy to be caught in certain pitfalls. When you drive the car under development for testing every day (in truth, I was responsible for two-thirds of the testing for the McLaren F1), in that time, you can unknowingly convince yourself you are making progress when in fact you are not. For example, it’s human nature that at the end of a long day you may want to think that your efforts to reduce low speed harshness are working better than they are. It is at times like this when you need a car to compare with. In those situations, the NSX time and again showed us the path in the areas of ride quality and handling, and also helped us recognize when we weren’t making as much progress as we thought.
In my opinion, the NSX’s most special quality has long been overlooked.
That could be summarized with the words, “The NSX’s suspension is amazing.”
Both the body and suspension are aluminum, and it probably couldn’t be helped that journalists’ attention has been focused on praising the aluminum body. However, the suspension is the much more impressive use of aluminum.
It’s lightweight, tough, yet compliant. Also contributing to the refined NSX’s handling and ride quality are 17 inch wheels and tires that are not overly large. The NSX’s suspension is truly an ingenious system, and back then I imagined the development costs must have been enormous. To achieve that unparalleled accuracy and superior ride quality, longitudinal wheel movement is allowed via the use of a compliance pivot.
Compliance refers to when you travel over a bump, the tire experiences a longitudinal force, which the tire and suspension must move with and absorb the shock. The pivot couples the upper and lower arms. It is connected to the arms via ball joints so that they move as a unit. When encountering input, the pivot rotates, keeping alignment changes to near zero while retaining compliance (see diagram). The inspiration obtained from this NSX suspension system would later influence the development of the McLaren F1′s suspension.
The NSX was also the first car to use DBW (Drive By Wire). It felt very pleasing. DBW is when instead of using a mechanical cable, an electronic signal is used to communicate throttle position. It achieved a very natural, linear feeling throttle, and I can now hide my embarrassment and confess that I copied the idea during the development of the McLaren F1 (laughs).
The low-slung NSX’s driver’s seat position also provided just the right head clearance and an amazing field of view. The NSX development team moved the air conditioning unit away from the dash and deep into the NSX’s nose in order to obtain more space. That air conditioning unit is an excellent one, and normally, you don’t notice whether it’s on or not.
On the day I bought the NSX, I pressed the “Auto” button and since then until selling it, I never had to touch it. It was that perfect. Ah, I also remember the audio system as being very good.
However, the media wrote up the aluminum body and the many merits and advantages I perceived in the NSX have largely been overlooked.
In my opinion, the NSX, while being such a great sports car, had two large flaws in its marketing. First, at the time, the public was not ready to accept a Japanese car that was this expensive. The second is that for supercar customers, the power figures were not quite high enough. Of course, the prototype’s engine was not bad, and soon the VTEC engine was added. Whenever I hear that VTEC sound it’s amazing. I am repeating myself, but the NSX’s excellent chassis would have been capable of handling much more power.
With just a slightly lower price, or possibly selling it with a different brand name and a different badge, or perhaps endowing it with a touch flashier and more aggressive styling and additional power, there is no question the NSX would have reigned as a cult star of the supercars.
However, during that time, in Honda’s philosophy there was a resistance to large engines with many cylinders. I am not certain, but probably at the time, the voluntary restraint on power limits was a factor. Being a fan of Honda engines, I later went to Honda’s Tochigi Research Center on two occasions and requested that they consider building for the McLaren F1 a 4.5 liter V10 or V12. I asked, I tried to persuade them, but in the end could not convince them to do it, and the McLaren F1 ended up equipped with a BMW engine.
The NSX’s development costs must have been enormous. Everything on it is unique. The chassis, powertrain, even the air conditioning are peerless. That aluminum body was very expensive. The numerous hurdles overcome by the NSX to reach production in areas such as spot welding, corrosion, and repairability make it a monumental work in automotive history. The philosophy of creating a car for human beings is apparent throughout. If it were me, I probably would not have obsessed over the aluminum and would have settled for a steel structure with aluminum panels to try to achieve a similar weight reduction. But what I really want to emphasize is the suspension. It is a a groundbreaking use of aluminum.
There are a few things that could be improved on the NSX. First, the tires are too soft. Over the seven years I ran mine, I went through 14 sets of tires. After changing over to harder-compound Michelins in the rear, my tire life increased. As a result, rear grip was decreased slightly, but driving became more fun. The NSX’s traction control and ABS are first generation systems and as a result are somewhat slow-acting. I also missed having more storage space in the interior. However, such things hardly seem significant in a sports car of this calibre.
The NSX is a landmark car. It awoke not only a lazy Ferrari, but Porsche as well and sparked advances in usability, ergonomics, and handling. It may not have achieved success from a marketing standpoint, but many influential and important people have owned them. The NSX is also unusual in that it continued to be on sale for so long. If I were to looking for that type of car now, I would–without a doubt–gladly own an NSX again.
Why them? “It’s three adults who pretty much do things that Phineas and Ferb would do.” - Jeff “Swampy” Marsh, Phineas and Ferb co-creator and Executive Producer
Head over to USA Today for an exclusive clip of the boys’ episode of Phineas and Ferb, and don’t forget to watch Phineas and Ferb on Saturday, March 1 at 8:00am on Disney XD… Platypus Day!
Happy Platypus Day!