Imagine if Formula 1 got rid of most of its rules and regulations — how fast could they go? The freedom to design and build whatever will result in the fastest time is a dream for many in the higher levels of motorsport, but for British hillclimb champion Alex Summers, it’s a reality.

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There have been a lot of great families in motorsport over the years — the Earnhardts, the McRaes, the Andrettis — but when it comes to the prestigious world of British hillclimbing, one surname is better recognised than most — the Summers. This week’s guest, Alex Summers, comes from legendary hillclimbing stock, with his grandfather, father, and mother all committed participants of the sport at the highest levels. That Alex is a British hillclimb champion and three-time runner-up isn’t much of a surprise with that kind of family history.

In this episode, we first cover Alex’s early days in racing, as well as his schooling and engineering education. Starting out working for McLaren during a university placement, Alex then moved to Aston Martin, where he’s been for the last decade. During all that time, he’s never stopped racing.

This leads us to his current weapon of choice, the ‘P4t’. This absolute rocketship was designed, engineered, and built by Alex himself. It weighs 500kg and runs a 700hp, 16,000rpm Cosworth IndyCar V8, resulting in one of the fastest cars on the generally very short venues that make up the British hillclimb championship season. Unlike many overseas competitions, Britain doesn’t have much in the way of elevation, meaning runs generally last well under a minute.

This form of very short and sharp racing is described as “drag racing with corners” by Alex, and this, along with very few regulations, makes for some very unique requirements when building a competitive car. We dig deep into the P4t build, asking the big questions about the engine, chassis, and suspension setup.

Alex is also known for his involvement with the McMurtry Spéirling development team, and was one of the first drivers to test the insanely fast 1000hp fan car. We find out what a car as fast and unique as the Spéirling and its 2000kg of downforce is actually like to drive and what it takes to get record-setting runs out of it.

Follow Alex here:
IG: @alex_summers_hillclimb
YT: Alex Summers
TK: @alex.summers.hillclimb

Don’t forget, you can use ALEX100 to get $100 OFF HPA’s Track Day Package: https://hpcdmy.co/trackdayb

Timestamps:
3:47 How did you develop an interest in cars?
6:27 How much time do you need to spend in a kart to be really good?
11:57 Seriousness of the British Hill Climb Championship
18:42 What’s your formal education?
26:39 Opportunities in the UK for high-end motorsport
31:29 Australian V8 Supercars and British touring cars
34:34 What happened after you finished your degree?
40:20 How do you mentally switch on for a hill climb run?
47:55 How do you improve at hill climb when track and car time is limited?
59:44 What are these hill climb cars based off?
1:02:28 Would a British hill climb car be competitive at Pikes Peak?
1:05:36 Pros and cons of turbocharging in these cars, different engine combinations
1:12:57 How do you set up suspension with your aero package for hill climb?
1:18:13 What is a heave spring and how does it work?
1:21:05 How and why the carbon monocoque?
1:35:10 How did you get involved with the McMurtry team?
1:41:08 How do you guess as a driver the level of grip available from

1200hp is nothing to sneeze at in a full-fat RB-powered Nissan R32 GT-R 'Godzilla', but it's outright wild in an SR20-powered 4wd Nissan pulsar GTi-R running 45 psi of boost! With the naming convention so close is this car worthy of the title 'Mini Godzilla?'

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Owner Akin Uykun gave us some insight into this build, which features a lot of great work from the PowerTune team, including their adaptor kit that allows the use of a Holinger sequential designed for the Mitsubishi EVO platform.

Running a MoTeC electronics package, the SR20 has a VE head, and some of the issues with the DE/DET heads at this level are discussed along with the cylinder head sealing the dry deck Bullet Engineering billet block utilises. The difference between a dry vs wet block is also explained, along with some insight into the fuel setup.

A high performance Precision 72-75 turbocharger is used to make the bulk of the 1200hp, but nitrous is also use lower in the rev range to help with spooling and up top to add the last 200hp to the peak output.

Without a doubt, this is one of the fastest Pulars in Australia if not THE fastest, and if Akin manages to hit the low 8's in the future, a world record could even be possible, but he's not quite there yet.

Braking at 3g = approximately -105kph (-65mph) in 1 second.

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Meet the RP968: A 1500hp capable beast that shattered the Sydney Motorsport Park lap record with a blistering 1:17.860, dominating WTAC for four straight years in the EMtron Pro class.

It takes the full package to smash an outright lap record, and that's what the RP968 has done with teams of clever people like Ashley Field of 909 Motorsport behind the scenes and Barton Mawer behind the wheel. Despite running a large capacity 4-cylinder engine and a 1500hp+ capable Thor billet block from Elmer Racing, amongst other performance goodies, the Bosch Motorsport ABS system that is there to reduce speed, not increase it, has been a key player in getting the lap times as low as possible on the day.

With a switch from the M4 to the M5 unit and more fine-tuning of brake pad compounds and spring rates, the team has gone from seeing 2g under braking to 3g, giving everything on and in the car (especially the driver) a huge workout.

To reach this level of performance takes more than just slapping on a 'big brake kit' and calling it good, however, and Ashley discusses some of the considerations that go into a high downforce car when it comes to trying to have braking performance at both high and low speed without bouncing or loss of traction.