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.

 

NZ Classic Car magazine, January/February 2026 issue 403, on sale now

Morris’ ground-breaking, world-beating, Minor
It was Britain’s biggest small car, and it got Britain mobile again.       Morris Motors celebrated its millionth Minor in December 1960, a car that defined the British motor industry, and was in production for 10 years alongside the iconic Mini of 1959.
Whakatane dentist John Twaddle has a passion for Morris Minors going back to 1982, and he still has his first example. There are now three ‘Morries’ in his garage. One, however, is quite special, a rare ‘Minor-Million’. 
One of just 350 made commemorating the millionth Morris Minor produced, the first British car to hit a million units, the well-rounded little Brit’ would end production in 1971with a tally of over 1.6 million units.
John finished his Minor Million six years ago, resplendent in lilac, its official factory colour. He calls it his ‘Minor Resurrection’, and it has won numerous awards.
This summer edition also comes with our annual FREE classic car calendar, a must for every garage wall.
Every issue comes with our FREE huge wall poster; this issue, our poster is of a couple of garage mates, a 1957 Ford Ranchero and a 1968 Lincoln Continental.