Adapting to Honda F1 engine layout a challenge for Toro Rosso

Toro Rosso technical director James Key says the switch from Renault to Honda Formula 1 engines for 2018 is not straightforward because of the way the two power units are designed

Adapting to Honda F1 engine layout a challenge for Toro Rosso

The different locations of the turbo compressors mean that fitting the Honda is not a straightforward swap into a car that was originally being designed around the French engine. McLaren faces the same challenge in reverse.

"They are completely different," Key told Autosport. "It's a very nicely packaged engine, but the whole power unit is a different architecture.

"It doesn't drop into the same space. There's quite a bit of car layout work that has to be done to adapt to it."

Key says it was important not to waste the aero work that had already been done for 2018.

"We try and stick to a rule that, if a car has already been in a development process for a while, not to upset any major items such as aero surfaces and that sort of thing, so we're not starting from scratch in too many areas," he said.

"We've adapted the car under the skin as best we can, and that's led to quite a different approach to the chassis design, to the way the gearbox works, and so on.

"We've carried over the concepts and developed them further from this year's car."

The gearbox, which is designed by Toro Rosso but uses internals from Red Bull Technology, will also be new, and shorter than its predecessor.

"Its layout and its size is different for this engine, compared to what we have this year," Key added.

"I think the concept is the same, but the architecture is different.

"Some internals will carry over, some will be changed, some will be bespoke to the STR box. Otherwise it will be pretty close to what we've been running."

Key insists that the Faenza team does much more of its own development than is generally believed.

"There's a lot more going on at STR than people think," he said. "People don't know STR, it's really frustrating.

"Although it makes a lot of sense to join together [with Red Bull] where you can, we've got our own aero department in Bicester, with our own windtunnel, and that's entirely independent because it has to be legally.

"The entire design of the car is done in Faenza - the only bit of the car that comes from RBT is the gearbox internals which are jointly designed, because there are often things that we specifically need."

shares
comments
Lowe: Massa should've won F1 Azerbaijan GP without Williams failure
Previous article

Lowe: Massa should've won F1 Azerbaijan GP without Williams failure

Next article

Renault F1 team 'must avoid' final round showdowns in future

Renault F1 team 'must avoid' final round showdowns in future
Load comments
Explaining the key aspects of Porsche and Audi's planned F1 entries Plus

Explaining the key aspects of Porsche and Audi's planned F1 entries

The VW Group’s German superpowers of sportscar racing have all but confirmed they are coming to F1 when the next set of engine rules come into force in 2026. Here's why both manufacturers are all set to take the plunge, and crucially how it might work

How Vegas went from byword for F1 indifference to grand Liberty coup Plus

How Vegas went from byword for F1 indifference to grand Liberty coup

Holding a race in Las Vegas – party central, a city of dreams and decadence and, yes, more than a smattering of tackiness – has been on Liberty Media’s most-wanted list since it acquired Formula 1’s commercial rights. But, as LUKE SMITH explains, F1 has been here before and the relationship didn’t work out

Why de Vries' F1 practice debut could add a new path to his current crossroads Plus

Why de Vries' F1 practice debut could add a new path to his current crossroads

A Formula 2 and Formula E champion, Nyck de Vries is currently considering where his future in motorsport lies. Continuing in WEC and Formula E is possible and he's also courted glances Stateside after impressing in an IndyCar test. But ahead of his Formula 1 FP1 debut with Williams, he could have another option if he impresses...

Formula 1
May 18, 2022
Why Leclerc's historics crash shouldn't put off F1 drivers tasting history Plus

Why Leclerc's historics crash shouldn't put off F1 drivers tasting history

OPINION: For a demo run ahead of Monaco's Historique Grand Prix, Charles Leclerc was blessed with the opportunity to drive Niki Lauda's former Ferrari 312B3 - but a brake failure at Rascasse suggested Leclerc's Monaco hoodoo transcended contemporary F1. Although an awkward incident, Leclerc deserves credit for embracing F1's history

Formula 1
May 18, 2022
Why the lack of “needle” between Red Bull and Ferrari in F1 2022 is a mirage Plus

Why the lack of “needle” between Red Bull and Ferrari in F1 2022 is a mirage

OPINION: The fight for the 2022 Formula 1 world titles between Red Bull and Ferrari so far features little of the public animosity that developed between the former and Mercedes last year. But that isn’t to say things are full on friendly or won’t get much worse very quickly…

Formula 1
May 17, 2022
The underdog F1 squad that thrust Senna into the limelight Plus

The underdog F1 squad that thrust Senna into the limelight

The Toleman TG184 was the car that could, according to legend, have given Ayrton Senna his first F1 win but for Alain Prost and Jacky Ickx at Monaco in 1984. That could be stretching the boundaries of the truth a little, but as STUART CODLING explains, the team's greatest legacy was in giving the Brazilian prodigy passed over by bigger outfits an opportunity

Formula 1
May 16, 2022
Why Aston Martin is unlikely to repeat Jaguar’s F1 mistakes Plus

Why Aston Martin is unlikely to repeat Jaguar’s F1 mistakes

Two famous manufacturer teams born out of humble midfield origins, splashing the cash while attempting to rise to the top of F1 in record time. There are clear parallels between Lawrence Stroll’s Aston Martin and the doomed Jaguar Racing project of 22 years ago, but MARK GALLAGHER believes struggling Aston can avoid a similar fate

Formula 1
May 15, 2022
How rejuvenated Haas recovered its F1 mojo Plus

How rejuvenated Haas recovered its F1 mojo

US-owned but until recently Russian-backed, Haas seems to have reached a turning point in car performance after three gruesome seasons. And it needs to if it’s to attract fresh investment. Team boss Gunther Steiner tells OLEG KARPOV how close Haas came to the abyss

Formula 1
May 14, 2022