Weekly Motor Fix: 1931 Bentley 4.5L

25 February, 2015

 

Despite my knowledge being a bit rusty when it comes to cars that are nearly 100 years old, I’ve always been a fan of old race cars. Previously I’d been scared to the point of tears at the thought of being inside one of the modern-day race cars, which was an oddity considering I was always surrounded by them and adored them, yet the thought of being inside one seemed like imminent death. With safety regulations and changes over the years, I really didn’t have a lot to worry about. Roll cages are now standard practice and the quality of safety never ceases to grow and expand.

However the race cars that I wasn’t scared of were the classics. They reminded me of Chitty Chitty Bang Bang and the thought of flying around the world. When I popped down to Caffeine and Classics on the weekend, I expected a quiet Sunday morning wander before lunch, but what I ended up seeing was quite beyond that. Seeing many Mustangs and little Minis, I had a good idea of what the majority of cars in attendance would be. I met up with a few friends and had a wander around the show, spotting a few oddities, and spotting a big green thing at the back by itself. Getting closer, a friend of mine said, “Check out the Bugatti over there!” The closer we got, the closer we realized the ‘B’ was for Bentley, not for Bugatti.

The front-mounted supercharger stood out like a sore thumb behind the headlights and horns. Working our way back through the engine, the bonnet strops, and into the cabin, it’s a remarkable sight, and a piece of engineering carefully restored and maintained to ensure it’s keep at such a high standard. It had grabbed my attention so strongly that I had to have a quick Google, which allowed me to figure out what I was looking at — a Bentley 4.5L Blower. Having once raced at Le Mans on an unsuccessful journey, the Bentley 4.5L Blower was renowned as being one of the first race cars to ever install a supercharger and, although not successful, it managed to create a stir in the circuit.

Driving one of these pre-World War II cars comes with a little more footwork than a modern car. With the accelerator situated in the middle of the floor and the brake off to the right, you’ve got to think a little harder than usual to ensure you’re not speeding up instead of slowing down. Then there’s the engine. What came as a surprise to me is that the 4.5(4)L engine is a single overhead cam straight-four, much like that of say a Honda D13B. Unlike a Honda however, there’s said to be around 40 Blowers left in original condition around the world with the market changing and the cars ageing. The owner was leaving as I was arriving however; strapping on his helmet and goggles, the man was all prepared for the journey ahead. It’s definitely not as easy as being in a modern-day car, but pedalling the Bentley beast around would certainly be an amazing piece of work to be associated with.

 

Last Tango in the Fast Lane

In the mid ’80s, I locked into a serious Nissan/Datsun performance obsession. It could have kicked off with my ’82 Datsun Sunny, though this would have been a bit of a stretch of the imagination, given its normally aspirated 1.2-litre motor — not the sort of thing to unleash radical road warrior dreams. But it did plant a seed, and it was a sweet little machine and surprisingly quick, in contrast to all the diabolical English offerings I had endured.
I was living in South Auckland at the time and was an unrepentant petrolhead. Motor racing was my drug of choice, and I followed the scene slavishly. Saloon car racing, with the arrival of the international Group A formula, was having a serious renaissance here and in Australia and Europe. There was suddenly an exotic air in local racing that had been absent for 15 years.
I was transfixed by this new frontier of motor racing that had hit our tracks in 1985–87 and the new array of machinery on display. In 1986, the Nissan Skyline RS DR30 made a blinding impression on me. The Australian Fred Gibson-run, Peter Jackson-sponsored team of George Fury and Glenn Seton were the fastest crew of the 1986 Australian Touring Car Championship. But Kiwi legend Robbie Francevic snuck through to win the Aussie Championship in his Volvo 240T after a strong start and consistent finishes.

NZ Classic Car magazine, May/June 2026 issue 405, on sale now

Reincarnation of the snake
We are captivated by a top-quality sports car
The Shelby NZ build team at Matamata Panelworks has endured a long and challenging journey, culminating with the highly anticipated public unveiling of the 427SC and firing up of its sonorous V8 at the 2026 Ayrburn Classic Festival of Motoring in Queenstown on February 20. This is a New Zealand-built car with loads of character and potential.
The car is now back in Matamata, and I finally have an opportunity to get up close and personal with it. But before then, the question that must be asked is, “Why would ya?”
The first answer is easy, as mentioned in the last issue of New Zealand Classic Car (#404). It was a great way to use up all the surplus Mustang parts acquired while converting brand-new Mustangs into Shelbys. The unused new Mustang parts would be great in any kit car, but the 427SC in front of me cannot be classified as one.
This is not a kit car. The reality is that it is a high-quality, factory-made production car.
Possibly the second answer is because the CEO of Matamata Panelworks, Malcolm Sankey, wanted to build a replica of the car that is a distant relation to the Shelby Mustangs scattered around his showroom floor, a car created long before the first Mustang was even thought of, and the brainchild of Carroll Shelby back in the early ‘60s.