Nissan is showing off how it uses diamonds in the production of the 2019 Altima’s engine.
The video is a bit campy, opening with “something groovy is happening at Nissan’s powertrain plant in Decherd, TN,’ and closing with ‘and that’s how bling smooths out the inside of this new Nissan engine,’ with the whole thing set to music that strikes a chord somewhere between ‘1970s porno’ and ‘office elevator.’ But sandwiched in between the cheese is a pretty cool message: Nissan uses actual diamonds in the production of the Altima’s 2.5-litre engine.
Nissan says the manufacturing technique that reduces friction inside the four cylinders of the engine by eliminating the need for cylinder liners is ‘usually reserved for supercars [but] has found its way into the all-new 2019 Nissan Altima 2.5-litre engine.’
The ‘mirror bore’ process involves a drill bit that contains bits of diamonds that didn’t make the cut at the jewellers, spun at a high speed inside the cylinders to polish the metal atomized material coating and ‘leave cylinders as shiny as a disco ball.’
In effect, the process reduces friction and increases efficiency — but really, it’s just a fun fact for Altima owners to boast about.
The diamond-slinging team at the Decherd facility puts together the powerplants for the Altima, Rogue, Maxima, Frontier, Pathfinder, Titan, and Leaf, as well as the Infiniti QX60, pumping out an engine approximately every 19 seconds.