Currently reading: How to build an F1-engined Porsche 911

British firm Lanzante’s take on the Porsche 911 is unique – but its creation was more a happy accident

Porsche 911 restomods have become something of a cliché, with new firms popping up almost weekly with the promise of analogue thrills and retro-modern looks. 

But Lanzante – the British firm known for maintaining many of the world’s McLaren F1s, as well as making race cars road legal – has produced one with a genuine difference.

Rather than upgrade the contemporary flat six, as is par for the course, Lanzante opted to retrofit a 911 with a genuine Formula 1 V6 from McLaren’s back catalogue.

Developed by Porsche and named the TAG after the team's contemporary sponsor, the turbocharged 1.5-litre powerplant is rumoured to have put out more than 1000bhp in qualifying trim. 

It thrust McLarens to three consecutive drivers’ championships between 1984 and 1986 – at which point it was succeeded by the legendary Honda unit that delivered Ayrton Senna three titles.

Retrofitting such a potent engine into a classic is a tantalising proposition but, as Dean Lanzante told Autocar at the Goodwood Festival of Speed, it was never the original plan.

He simply wanted to purchase McLaren’s original TAG test mule, a 930-generation Porsche 911 Turbo, from the firm’s racing arm. Team boss Zak Brown politely declined the request, but Lanzante was undeterred. 

Dean Lanzante

“They had a load of engines. These engines had stood since the ’80s, but they were all crated up,” he says.

Sensing an opportunity, he began to assemble a business case for building a small run of road cars referencing that original mule. Cosworth was chosen to modify the engines for reliability and tractability on the road, but the costs quickly began to mount.

Lanzante explains: “We realised that doing two or three cars would be hugely expensive. Really, we needed to do more – a batch. Initially we thought to do as many as [the engine’s] race wins, 25, but there weren’t enough engines. We fixed on 11 cars, one for each driver for each year: the reason for the odd number was in 1985 they had three drivers – John Watson stood in for Niki Lauda.”

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He was “adamant” that the standard cars had to appear as the mule would have in its day, so he forced clients to pick from Porsche colours and materials. “It wasn’t a ‘Pimp My Ride’ car,” Lanzante jokes, noting that the TAG Turbo 911 has a sunroof, electric mirrors and its original steering wheel.

But one particularly important customer – the owner of Alain Prost’s 1985 championship-winning McLaren MP4/2 – wanted more punch than the 503bhp afforded by the ‘regular’ TAG 911.

“We’ve had a lot of criticism,” he says, but “they [McLaren] ran four bars of boost. We run three. We’ve lowered the compression ratio because we run regular fuel and they were running race fuel”. It’s a “trade-off” between power and usability, Lanzante says.

Such is this client’s clout that Lanzante expanded its plans to comprise three ‘Championship’ cars celebrating each title won by TAG-engined McLarens. These are boosted to 625bhp and shed 400kg of weight, bringing them down to 920kg (dry).

They will be painted in reference to the helmet liveries of the drivers who won each championship: the first two in Alain Prost’s French flag, and the other in Niki Lauda’s Austria-Marlboro strip.

Expanding on the Championship edition’s new details, Lanzante says: “The seatbelts have Hugo Boss written on. The steering wheel is made by Personal and trimmed in suede – not Alcantara. It’s all period-correct. The gearlever is the same design as in the F1 car, and the wheels were made by Dymag from the original drawings scaled up, so the spoke pattern matches the F1 wheel.” 

Dean Lanzante and Charlie Martin with Lanzante 930 TAG Turbo Championship

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Traction control is included as a concession to drivability – ”a sort of safety measure” – but “this is a little bit more brutal,” Lanzante says.

Although the three Championship cars were not originally in the plan, Lanzante is firm in his commitment to building just 14 TAG Turbos in total. He is of course limited by the number of engines available – and has purchased one extra as an “insurance policy for everybody” – but would not press the engine back into production.

Lanzante says: “You could remake that engine, remake the castings and all of that. But a lot of people who’ve bought this, it’s not about lap times. This isn’t that.

“This is: you are driving a beautiful car, and you’re driving a car that a Formula 1 driver has campaigned in a Formula 1 race week. That’s the special thing. That is what most of the people have bought this for. How many people would be able to buy a [McLaren] MP4? There’s a few, but how many people would be able to get in and drive it? Very few.

“I could remake it, but it wouldn’t have the same soul to it. It’s the fact that it’s an original engine. It’s that we borrowed the original car from McLaren and scanned it. If I knocked out a load more of these, there’d be no point.”

The TAG 911 was “the hardest” project ever undertaken by Lanzante, he says.

So how to follow it up? “The truth is, I don’t know.”

Lanzante elaborates: “A lot of people have said: ‘You’ve done a Porsche project. Are you going to do another?’ It’s a saturated market. I want to lead with something new, not just follow what everybody else is doing. I’m not knocking anyone: I don’t want to be just another. I want to stand on my own.”

But days after our chat, Lanzante’s team makes a big statement.

One of the other stars of the Festival of Speed was the Red Bull RB17, an Adrian Newey-designed track weapon packing an 1184bhp hybrid V10.

Red Bull RB17 at Goodwood Festival of Speed

Red Bull Technology bosses had already hinted at the potential for owners to make the hypercar road legal, with CEO Christian Horner telling Autocar: “I'm sure there are several conversion houses that are capable of doing that.”

It proves that Lanzante gets there first. “Work will start immediately to develop the necessary upgrades to allow it to be driven on public roads,” its statement reads. 

I, for one, can’t wait to see the finished product.

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Charlie Martin

Charlie Martin Autocar
Title: Editorial assistant, Autocar

As part of Autocar’s news desk, Charlie plays a key role in the title’s coverage of new car launches and industry events. He’s also a regular contributor to its social media channels, providing videos for Instagram, Tiktok, Facebook and Twitter.

Charlie joined Autocar in July 2022 after a nine-month stint as an apprentice with sister publication What Car?, during which he acquired his gold-standard NCTJ diploma with the Press Association.

Charlie is the proud owner of a Fiat Panda 100HP, which he swears to be the best car in the world. Until it breaks.

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F6C 20 July 2024

With the best will in the world, this is the ultimate in pointless trophy tat. There's no way this car is usable with that uber exotic engine. Maintenance, spares, long term reliability, it's all a total non starter. Obviously, there's also the question of drivability, the whole thing is such a silly flex - a tiny, ultra-high specific output turbo engine like that is the last thing you'd do if the aim was primarily about making the car great to drive, it's all about image and "heritage" and showing off. Obviously the cars aren't going to be driven, that's not what cars like this are about. But even so, the whole thing is just such a turn off.

Peter Cavellini 20 July 2024
F6C wrote:

With the best will in the world, this is the ultimate in pointless trophy tat. There's no way this car is usable with that uber exotic engine. Maintenance, spares, long term reliability, it's all a total non starter. Obviously, there's also the question of drivability, the whole thing is such a silly flex - a tiny, ultra-high specific output turbo engine like that is the last thing you'd do if the aim was primarily about making the car great to drive, it's all about image and "heritage" and showing off. Obviously the cars aren't going to be driven, that's not what cars like this are about. But even so, the whole thing is just such a turn off.

Well,I don't think they'll just be bought and become a Garage Bunny kept in an air conditioned Tent just to be gawped at, no, they'll be bought for track use maybe even raced who knows?, but if the buyer likes it then that's fine, they're happy,obviously it's not everyone's choice of the perfect car,but that's what makes us different, I like the 911, I guess it was when the 911 Turbo first came out with that huge wing on the back,anyway, yes the engine wouldn't be particularly good for everyday road use, but on a track....

F6C 20 July 2024

Sorry, you're living in a total fantasy if you think these are going to be driven hard and raced. They're £1m base price with a realistic price of £1.5m and up. Yes, people race classics purportedly of that value or more, but in reality most of those are actually reps even when advertised otherwise.

Plus support and maintenance of, say, a 60s Ferrari, it pretty straight forward. Racing this car with this kind of exotic engine is a far, far more complicated and costly proposition. It's not totally impossible, but this car screams static trophy. "Garage Bunny kept in an air conditioned Tent just to be gawped at" is exactly what it is. It's not at all the kind of car someone would buy to do track days.

Peter Cavellini 20 July 2024
F6C wrote:

Sorry, you're living in a total fantasy if you think these are going to be driven hard and raced. They're £1m base price with a realistic price of £1.5m and up. Yes, people race classics purportedly of that value or more, but in reality most of those are actually reps even when advertised otherwise.

Plus support and maintenance of, say, a 60s Ferrari, it pretty straight forward. Racing this car with this kind of exotic engine is a far, far more complicated and costly proposition. It's not totally impossible, but this car screams static trophy. "Garage Bunny kept in an air conditioned Tent just to be gawped at" is exactly what it is. It's not at all the kind of car someone would buy to do track days.

Ferrari due Track days for owners of their cars, the owners of say an FXX don't even get to keep there cars at home, they're kept by Ferrari so when track days are arranged owners come and drive there cars ,some owners are developers of the FXX ,so, a little piddly Porsche costs Buttons to own, and I'm sure funding isn't won't be an issue.

F6C 20 July 2024

A Ferrari FXX is a totally different proposition. Ferrari has a market cap of 75 billion dollars and a massive facility and armies of technicians. It's all totally painless for the owner in terms of running and maintenance. It breaks? Ferrari will fix it. The end.

Where do you go when your ultra low volume, uber exotic 80s F1 engine implodes? What's the process? How many spares to they have? If a rod goes through the block, are there even spare blocks? It's far less clear, far more complicated, not remotely comparable. And if you think this car is the kind of thing that's going to be high up the list for doing track days, you really don't know anything about track days. Or track cars. It's a trinket, not a track tool.

jason_recliner 24 July 2024
F6C wrote:

A Ferrari FXX is a totally different proposition. Ferrari has a market cap of 75 billion dollars and a massive facility and armies of technicians. It's all totally painless for the owner in terms of running and maintenance. It breaks? Ferrari will fix it. The end.

Where do you go when your ultra low volume, uber exotic 80s F1 engine implodes? What's the process? How many spares to they have? If a rod goes through the block, are there even spare blocks? It's far less clear, far more complicated, not remotely comparable. And if you think this car is the kind of thing that's going to be high up the list for doing track days, you really don't know anything about track days. Or track cars. It's a trinket, not a track tool.

Yep. Well said.