Saturday involved around ten of us from NSXCB going over to TDI at Essex
http://www.tdi-plc.com/index.php
to have a go on their hub mounted dyno. Usually costing £100 an hour + VAT, I was very impressed to see the machinery in action. Compared to Charlie's plot at SRR, the torque curve fluctuated a lot more, indicating that there was less of a smoothing effect. My car gave 255.8bhp @ 7250 and 197.9 lb-ft @6550. This was the lowest of the 3.2's tested (most of which had exhausts/air intake mods), indicating that the NSX is receptive to some modding work.
Other rototest numbers are here
http://www.rri.se/index.php?DN=29
Cayman S (auto)
http://www.rri.se/popup/performanceg...p?ChartsID=252
S2000
http://www.rri.se/popup/performanceg...p?ChartsID=695
911 (1998)
http://www.rri.se/popup/performanceg...p?ChartsID=378
350 Z
http://www.rri.se/popup/performanceg...p?ChartsID=637
http://www.rri.se/popup/performanceg...p?ChartsID=447
Z4 M Roadster
http://www.rri.se/popup/performanceg...p?ChartsID=606
and NSX prime says the 3.2 typically gives 15 bhp more than the 3.0, which agreed with our measurements
http://www.nsxprime.com/FAQ/Performance/measure.htm
Other numbers from the day are here
http://nsxcb.co.uk/testvb/showthread.php?p=41990#post41990
I also had the opportunity to weigh my car (numbers in brackets is with me in the car - all numbers with 3/8 tank of fuel)
FL 274 (293.5) FR 281 (316.5)
RL 387 (397) RR 410 (448.5)
So the car appears to be heavy on the right hand side - even without driver. The weight distribution is 41:59, changing on slightly to 42:58 with me in the car
So the question remains, if I add these modifications to my car - how much will this affect my terminal speed at Bruntingthorpe
NSX.xls (15 KB)
My initial calculations indicate that I will need another 10bhp (199 vs. 189) to hold a steady 165 vs 162 (current record). Further investigation will have to be undertaken to see how the extra power will affect acceleration within the constraints of the Bruntingthorpe straight.
Sunday was Goodwood for the breakfast club,
http://www.goodwood.co.uk/breakfastclub/default.asp#diary
with the weekend's theme being ‘Modern Sports Car Legends – great drivers’ cars, from 1980 to the present day’. I was lucky enough to park trackside, along cars such as the short wheelbase Quattro.
There had been warnings that there may be a band of showers passing through the region, but nothing prepared us for the snow, the kind of which I hadn't seen since I was a child. After around twenty minutes, Mark (in his targa) and I decided to make a run for it back towards London.
We pulled over to take a picture of the cars. In hindsight this was probably not the best of ideas as the mild gradient meant that my car struggled to get going again. Mark had new tyres and his traction control may well have been more lenient, whereas my car would go nowhere with the traction control on.
Soon after this photo was taken the road was blocked off after a collision ahead, so we decided discretion was the better part of valour and took shelter in a local hotel. It seemed we weren't the only ones, as there were numerous exotics parked up, including a Zonda, Diablo SV and De Tomaso.
After around an hour I decided to make a break for it but made the mistake of taking a B road. It wasn't long before the traffic ground to a halt on a slight incline. The NSX was starting to struggle so I headed back towards the A27, which had been gritted unlike the majority of the smaller roads