https://it.motorsport.com/f1/news/renau ... do-988336/
I read a news about mgu-k of 2018 pu
At Viry Chatillon they are working hard to deliberate on the power unit that will equip Renault F1 Team, Red Bull and McLaren. The French technicians are satisfied with the work on the new 6-cylinder turbo, while the MGU-K is not ok
The work at the Viry Chatillon headquarters continues at a fast pace, but according to rumors gathered in the last days, the feedback from the bench tests are not all positive for now.
The thermal unit seems to have guaranteed excellent results, already approaching now the dreaded threshold of seven race weekends (this is the limit set by technicians due to the restrictions imposed by regulation 2018): even the turbo trouble caused by the vibrations seem definitively resolved, but according to rumors to create problems of sealing would be the MGU-K units with difficulty in the lubrication necessary for cooling
The distance programmed on the test benches is more than 7,000 kilometers, or the distance that is normally traveled to resolve the seven races, but it is above all the hybrid part that worries the French technicians.
The three months that are missing at the start of the 2018 World Championship are a period of time that can bode well in the possibility of solving all the unexpected events, but there is a bit of pressure.