Hy all,
Thought you might be interested in some 'real world' performance data taken from my GTT220 Cooper S.
As measuring the 0-60 is very very aggressive to both clutch and tyres (and in a High Performance front wheel drive car a matter of 'hit and miss' with the amount of wheelspin per attempt), I thought it would be more beneficial (and less damaging to my poor car) to measure the 30-70mph times, which is a far better indicator for real-world performance anyway.
The data was recorded accurately using a
Race Tech AC22 Accelerometer, which has been recently re-callibrated at their Factory HQ.
The runs were on the flat, 1 up (90kg), full tank of fuel, in the dry. Outside temp was 21.5 degrees, and Relative Humidity 61%. Traction Control was OFF (obviously!), as was the air-con/heating system. Fuel was Shell V-Power (99RON), and oil is BMW TWS Motorsport grade fully-synthetic (as used in M3, M5, M6, and Alpinas). The car is specc'd as follows :
Mini Cooper S
GTT220 Conversion (+ GTT 'Limit Stop')
GTT Link Pipe (RHS silencer removed)
GTT Oil Catch Can
Tar.Ox 6 Pot Big Brake Kit (310mm Rotars)
Non-Runflat AVON ZZ-3's, with approx 2000miles wear.
Everything else is standard, although it does need to be mentioned that the GTT (MTH?) Re-Map has given the car a higher 'Rev Limit'.
I made 3 runs, all from the same start and finish point, all from a standing start, with the AC22 set to only collect data from the exact moment I hit 30mph, and to stop at exactly 70mph.
Although this data is not as accurate as the very expensive testing equipment that the magazines use, it is a hell of alot more accurate than ppl posting times taken with 'stop watches'.
Here are the figures for each run:
RUN 1 - 5.82s taking a distance of 507ft, peak power 173bhp @ 69.7mph (5.76s), with max G-Force of 0.47G
RUN 2 - 5.55s taking a distance of 490ft, peak power 180bhp @ 67.3mph (4.82s), with a max G-Force of 0.50G
RUN 3 - 5.33s taking a distance of 466ft, peak power 187bhp @ 68.2mph (5.04s), with a max G-Force of 0.47G
As you can see, the times were getting quicker, as I started to get more aggressive with the starts, and I presume the tyres were warming? I decided NOT to try another run, as after RUN 3, there was a distinct smell in the cabin of warm clutch lining!!!!!!
These figures are mightily impressive when viewed next to the figures from the car's main 'rivals', posted below (Autocar Magazine data) :
SUBARU IMPREZZA WRX - 5.8s
RENAULT CLIO 182 - 5.8s
VW GOLF R32 (old shape) - 6.3s
HONDA CIVIC R - 6.0s
AUDI A3 S3 - 6.2s
SEAT LEON CUPRA R - 6.0s
PORSCHE BOXSTER - 5.5s
AUDI TT 225 - 5.8s
BMW 330 Ci - 6.1s
As you can see, a 220bhp (approx) Mini Cooper S puts in a very respectable time, (rightly so, considering the approx power to weight ratio) and speaking from experience, I have *ahem* 'come up against' most of the above cars and have had absolutely no problem keeping up with them (almost driving into the boot of some of them, *
*) , just as long as the Mini is
moving (NB - 0-60 drags are a different ball game altogether, especially against the 4WD's). My data also matches pretty closely with RoadTest Magazine's recent Hot Hatch Showdown, where a 210bhp Works put in a 6.4s 0-60 and a 5.4s 30-70?
I know it's all just a bit of fun, but I enjoyed doing it, and i'll be testing braking times soon, now that my Tar.Ox Big Brake Kit has 'bedded in'.
(original review of my GTT220 Conversion linked below, for anyone interested )
http://www.mini2.com/forum/engine-dr...ng-review.html 
)
