The Silverstone Classic starts tomorrow, and Ford specialist Mountune will be there with the Kaliber sponsored ex-Rouse car, which is being raced by Julian Thomas in the JET Super Touring Car Trophy. It's a big deal for the team since back in 1990, at the Silverstone round of the British Touring Car Championship, this Sierra got beaten by Mountune Racing's own RS500, driven by Rob Gravett.
In case you haven't heard the name, David Mountain's company has been working with Fords since 1980, gaining its reputation through the success of its Sierra Cosworth RS500s in the BTCC and WRC. Today, Ford offers Mountune performance packages with a factory warranty, while the racing division focuses on its current BTCC effort, as well as Mountune's engine deal with the Chinese Touring Car Championship and various rallycross programs.
Even more interesting is that due to the growing demand, Mountune has already built over 500 YB engines, with power outputs pushed well beyond any figure the Australians could come up with in the nineties. In fact, Mountune's 2.o built for the Kaliber Sierra had to be detuned to 550 horsepower in the spirit of 1990.
Of course these Cosworth YBs are hardly built like they were back in 1986. By now, the combination of a Ford Pinto block, Cosworth's DOHC head and a Garrett turbo in the size of your preference got improved, with Mountune adding modern management systems and refined internals, including camshafts, pistons, rods, and a multi-layered steel head gaskets. The result is well over 500 horsepower from a two-liter four-cylinder, even with the boost levels dialed down.
Preparing for the weekend, Mountune's David Mountain had this to add about racing with the former equal:
It’s certainly a strange feeling working with the old rival! Although the Silverstone Classic is a real celebration of historic motor racing so it doesn’t have quite the same pressure we were under in 1990. It is easy to forget how tough it was then, the rate of development was incredible and we were up against some really strong teams. It would be great to see a win for the Kaliber car at Silverstone Classic, which, after all these years is now powered by Mountune.
Back in 1990, we all got hyped up for the Grand Prix support race...so we had convinced ourselves that we needed a really powerful top-end engine and traded mid-range torque for a big number at 8,000 rpm which turned out to be a bit of a mistake. As the old saying goes, horsepower sells engines, torque wins races. Long story short, we soon realized our error and after we returned it to its original spec I remember going up and down the bypass on trade plates trying to set the boost up properly. Not sure that would happen today…