Much expected of McLaren MCL33-'B' debut in Spain

Fernando Alonso and Stoffel Vandoorne have struggled with lack of pace, the pair slowest of the Renault powered brigade and, to add insult to injury, probably on par with Honda-powered Tor Rosso...

For a variety of reasons the MCL33 never had the best birth, as the Woking outfit were tasked to bolt on Renault power units to their cars during the winter after management ditched the ill-performing Honda units.

There were early delays related to resolving the over-heating problems that emerged during their early days of testing with Renault. The team thus split human resources into a testing team to get the basic car doing laps and a separate team working on performance upgrades, these will be unleashed for the first time during the course of free practice in Barcelona on Friday.

The team promised that in Spain and Canada the 'real' 2018 McLaren will break cover, and of course, expectations are high as the team need to find a substantial dollop of performance to match Renault, let alone Red Bull or pace-setters Mercedes or Ferrari.

By all accounts, the MCL33-B will feature a heavily revised front nose and wing, modified deflectors, baffles and winglets as well as mods to the underbody.

However, the front wing and nose is said to be where most of the performance has been found by the technical gurus at the factory, featuring a mix of traditional concepts with some innovations thrown into the upgrade which is expected to resemble Force India's front-end solution.

We will only know exactly what when the car is rolled into the FIA garage to be scrutineered at Circuit de Catalunya on Thursday.

A McLaren employee told Auto Motor und Sport, "There were two work groups over the winter. One to build a basic car for testing, and evaluating the Renault power unit package on their car. The other technical team has worked on the planned evolution of the aero concepts."

"But that had to be held back until the new nose was ready for use because the nose and front wing determine what happens further back in the car."

The new front nose and wing passed the mandatory FIA crash tests in early April and since then McLaren have been tight-lipped about the specifics of the upgrade but have conceded that the Baku version of the car has been put out to pasture, with hopes high that the B-version of their car will iron out the shortcomings and as a result they will close the gap to the frontrunners.

More upgrades will be bolted on to the car as the season evolves, with Canada set for an important roll out as Renault will make introduce the first major upgrade to their power unit, so far this year, during the three days in Montreal.