Yes, that was the time when 1,5 V6 turbo engines were universal and developing the highest levels of power ever seen in the sport. The especially build Renault qualifying engine was reported to develop around 1,150bhp by the end of 1985.
I heard some stories of those Renaults, lifting all 4 wheels off the ground at the crest of the hill at Monaco, touching 220 MPH, all while leaving a cloud of faint blue smoke behind. God only knows what kind of noxious blend they used as fuel. Methanol, nitro, hydrazine.. Probably some witch's brew of everything they could find. Eye of bat, tail of newt.. For a while there, chief mechanics often had clauses in their contracts that they would never be required to handle the fuel.
And what kind of balls you had to have to drive those things. I almost crapped myself when I did 150 km/h for the first time, I imagine Tambay drinking a cup of tea and reading a newspaper at that speed in the monster Renault.
The fastest I've gone on the road was 165 miles per hour, date, location and vehicle withheld. On one hand I was giggling like a demented clown. On the other, I was shaking so hard my brain could barely tell my hand to squeeze the brake. And these guys kept that speed and more for hours on end, dodging guardrails by millimeters.