My new car currently in final stages of build before I take delivery of it.
an epic car that started my own personal journey on a quest for 1000 hp which I ended up getting a gtr with.

The Sierra was specced and built by rod tarry and mark Shead of madevelopments, sadly rod passed away in February 2018, so the start of this thread is all about documenting the history of the car and it's current build as best I can from information rod has put on his Facebook page


So let's start with the history first




in rods own words "
BRIEF HISTORY - It had been a dream for many years to build a very fast car. My son suggested a Sierra RS Cosworth as having good Tuning potential so the search began. In July 1996 I found & purchased an extremely clean Sapphire with a 330bhp M.A.Developments conversion. I contacted Mark Shead at MAD & asked for him to build a 400bhp engine as I thought that would be my dream car. I covered 9000 miles before the urge for more grunt returned. The result a 504bhp/492ft-lb conversion which required uprated brakes , Differential & a Tremec TKO gearbox to cope. This was a great engine & it managed runner-up at TOTB RWD section in 2002. Before 2002 came to a close the car had set a RS Cosworth RWD Topspeed record of 183.27mph it was a pleasant surprise. That record was beaten in 2003 so to regain it required more Power. A MAD 640bhp/530ft-lb conversion was fitted & with a 75 shot of Nitrous around 720bhp was available. On the 16/09/2004 at Bruntingthorpe with Mark at the wheel it became the first RS Cosworth on the planet to exceed 200mph running 201.8mph. I joined the 200mph club with a personal best of 201.3mph in early 2005. To push the record further a larger GT40/94 Turbo was fitted pushing Power to 680bhp & with a 100 shot of Nitrous it was enough to see the record raised to 206.1mph in August 2005. In 2015 that record still stands. We tried to break it on the TV program '5th Gear' in November 2005 but very damp conditions saw us fail with 206.0mph recorded despite running around 830bhp that day with a 150 shot of gas.
The development of a 800bhp engine started in 2006 but took some time to complete in December 2008 it made 838bhp/666ft-lb. This engine used a GT4202 turbo & ran as my road car for several years.
With the developments in Electronics & Turbo technology we are in 2015 starting to build a 900+bhp engine using a EFR 9180 Turbo & the latest Emtron KV8 Ecu its progress will be monitored on this page. Its hoped to run at a Vmax event in 2016 to try to push the Topspeed record to circa 212mph.