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It has been a fascinating first day of testing at Sepang. And like all fascinating days, it has been long, tiring, and utterly inspiring. There were surprises, disappointments, and rumors confirmed and denied. It was, in short, a good day at the office.

Marc Marquez was fastest – it barely goes without saying – the 2013 World Champion picking up where he left off. He was quick from the off, and put in a final burst of speed at the end of the day to open the gap on the rest, finishing with half a second advantage.

Braking stability was the watchword for the Repsol Honda team, especially rear grip on braking and corner entry, with both Marquez and Dani Pedrosa working on a slightly revised version of the 2014 RC213V which both men had tested at Valencia last year.

Their main focus – like those of everyone on their first day back on a MotoGP – was just to get used to the speed again. The switchover had been toughest for Cal Crutchlow, the Englishman claimed. He had ridden a motocross bike for exactly one day, he said, spending the rest of his winter training on his bicycle. The speed differential between a 20-speed racing bicycle and a 6-speed Ducati Desmosedici is nothing if not cavernous.

The happiest faces were at Yamaha, though in different garages and on unexpected faces. Valentino Rossi took the second fastest time, had led for a large part of the test, and looked a much happier rider all round. The rapport with new crew chief Silvano Galbusera was good, the atmosphere in the team was good, but above all, a few small changes which Yamaha had made to the YZR-M1 had proven to be significant.

The test ban is over, and the MotoGP season is about to get underway. Bikes are already circulating, as the test riders put the first versions of the 2014 models through a shakedown to ensure that everything is in place, and working the way the engineers intended. In a few hours, we get the first glimpse of what the 2014 season could hold.

The rule changes for 2014, though at first glance are relatively small, could have a major impact. For the front runners, the fuel allowance is dropped from 21 to 20 liters, a change requested by the manufacturers to give them the engineering challenge they demand to justify their involvement.

All of the Factory Option (the designation for the bikes which have been referred to as factory prototypes for the last two seasons) entries must now use the spec Magneti Marelli ECU, but they retain the ability to develop their own software for the computer which sits at the heart of every modern vehicle.

That reduced fuel allowance will place a premium on fuel conservation, meaning the manufacturer who can reduce friction, thermal efficiency and combustion efficiency will hold the upper hand.

It’s not just the factory bikes that have a new designation. The CRT category has disappeared, replaced by the Open class. The change is not as big as the renaming would appear. Like the CRT bikes, they have 12 engines instead of 5 to last the season, and 24 liters of fuel to last each race. And like the Factory Option bikes, they must also use the spec Magneti Marelli ECU.

The difference, with both the Factory Option bike and last year’s CRT machines, is that now they must use the Dorna-controlled software, written by Magneti Marelli to Dorna specifications. The switch to control software means that the claiming rule, which defined the CRT class, has been dropped. Anyone can enter anything in the class, from modified Superbike (as long as, like Aprilia’s ART machine, it uses a prototype chassis) to full-fat factory engine, as long as they use the spec software.

What effect will the new rules have on the racing? Less fuel is rarely a positive factor in any form of racing. Of the various ways of limiting performance – engine capacity, rev limits, and fuel flow – fuel limits are invariably the most expensive, both in terms of engine development and in terms of the price riders pay to keep their weight down.

The track was a lot busier on Tuesday at Valencia, after the halfhearted beginning to MotoGP testing on Monday afternoon. A group of well-rested riders took to the track to get prepared for the 2014 onslaught, and take the first steps on the road to a new season.

Some familiar faces, some new faces, but also a couple of new bikes, with the Yamaha FTR machines run by Forward Racing making their debut on the track, and Nicky Hayden getting his first taste of the Honda RCV1000R.

The times set by the brand new Open class bikes hardly set the world on fire, but that was to be expected given the fact that this was the first time either of them had seen serious use in the hands of Grand Prix riders. “Don’t forget that Casey [Stoner] did just five laps in Motegi with that bike,” Honda principal Livio Suppo told me. “It’s really just a first shakedown with the riders.”

That point was illustrated by Scott Redding, who has a problem with the wiring loom on Gresini’s Honda RCV1000R, and had to wait while they fixed that problem.

On Monday, the new Honda RCV1000R production racer from HRC will take to the Circuit Ricardo Tormo in Valencia, Spain for its first public testing session. HRC couldn’t wait to show off its machine though, and held a press conference today at the Valencian GP for the MotoGP press pool.

Based closely off the Honda RC213V that Dani Pedrosa, Marc Marquez, Stefan Bradl, and Alvaro Bautista are racing with this season, the Honda RCV1000R will fit under the “Open Class” set of rules, and be campaigned by Nicky Hayden, Scott Redding, and Karel Abraham, with further riders expected to be added to that list.

When it was announced that the claiming rule was to be dropped and the rules would be changed for 2014, one of the main questions was what to call the new class. After some complaining early on, MotoGP fans had become used to the CRT name, and understood what was meant by it.

With the choice of software now determining how much fuel and how many engines a team can use – 24 liters for the spec Dorna software, 20 liters for factories using their custom software with the spec Magneti Marelli ECU – there was no easy and obvious nomenclature for the bikes.

Under the first draft of the rules, the bikes were divided into two categories: “MotoGP” and “MotoGP with factory option”. That appears to have encountered resistance, however, and so a new name has been found for the non-factory bikes: for 2014, non-factory bikes will be referred to as ‘Open’ entries.

Tork India, third place Open Class winner at this year’s TTXGP at the Isle of Man, has posted up a teaser on Facebook announcing the imminent arrival of their new electric motorcycle racer. While the photo being displayed on Facebook is really just a GSX-R cover with the Tork logos superimposed onto it, we’re still excited to see our first glimpse of the new Indian racer after the new year.