30th September 2006 Rolling Road Day

[Paul]

Indeed ... a great morning ... shame my new air box actually reduced top end bhp rather than aid it ... albeit only a reduction of 3bhp at the very top end of the rev range ... however every one counts ;-)

Having studied the two runs (Apexi 'v' OEM filters) on the combined printout the difference is so slight and overall there really is very little difference on the whole ... I think I'll swap the OEM one out again and put the Apexi filter back on ... the more enjoyable cabin sound from around 4,000rpm will be worth it.

The OEM filter provides smoother plot lines and under 3,500rpm it has roughly a 5bhp and 10lbs/ft advantage over the Apexi ... but from 3,500rpm to around 7,200rpm there really is so little to choose between them it's hard to tell them apart ... both the bhp and lbs/ft lines are better with the Apexi from around 5,900 to 7,000rpm ... albeit only about 5bhp and 5lbs/ft ... so I'll be keeping revs over 3,500rpm when I want and enjoy the sound and enjoy the extra lbs/ft and bhp between 5,900 and 7,000rpm :-)

There were seven NSX's in total ... I think Simon made notes on types and bhp figures etc so I'll leave him to put up the 'results' as it were ... good job I've got strong shoulders as I think I had to hold up everyone else above me :!:

There didn't seem to be a shortage of cameras, still and video, so I would imagine there will be some additional shots in the gallery, or here soon but for the time being ... here's the line up of NSX's ... minus Mitch who had to depart around midday ... plus SportyKing's mad mad MAD MAD Ariel Atom!

Note the shot of 'Biggles' making his departure ... shame I didn't get any of him screetching off down the road ... mind you I'd have to have been quick ... he was down the road amid wheels struggling to get grip and a wonderful howl from the exhaust ... I don't know who was smiling more ... him or us as we watched :!:

[Kevin]

OK so I guess you're waiting for the movies;


I could do with someone giving me the power figures, mods etc for each of these cars.

http://nsxcb.co.uk/movies/S5NSX.mpg

http://nsxcb.co.uk/movies/X626BLB.mpg

http://nsxcb.co.uk/movies/BLUE.mpg

http://nsxcb.co.uk/movies/K194EGM.mpg

http://nsxcb.co.uk/movies/N5XPW.mpg

http://nsxcb.co.uk/movies/S2NSX.mpg

http://www.nsxcb.co.uk/movies/ARIEL.mpg

And of course, the loudest and the best (IMHO) is last. I like the start of this video where there is a low rumble fromt the exhaust, it reminds me of Jaws for some reason. My wife says my car sounds like a plane.

http://nsxcb.co.uk/movies/J14NSX.mpg

[simonprelude]

Running order..........

S5NSX 3.2 274hp 218lb/ft
X626BLB 3.2 269hp 215lb/ft
N5XPW 3.0 254hp 189lb/ft
W2NSX 3.2 275hp 216lb/ft
J14NSX 3.0 279hp 210lb/ft
S2NSX 3.2 289hp 224lb/ft
K194EGM 3.0 262hp 195lb/ft

[Martin]

Are these at the wheel, or estimated at the flywheel?

Cheers
Martin

[Kevin]

These are 'calculated' figures at the flywheel. The dyno measures the losses while the wheels coast back down to rest.

Simon did you record at what rpm the peak power was made at?

[Minch]

Really good day! Sorry I had to disappear early. Got a few images for you. Also got my graph (although I was slightly disappointed with the results) for everyone to look at. It seemed that the 3.2's were reaching peak power at approx. 6800RPM and the 3.0's were slightly higher at around 7300RPM.

and Paul . . . . 289bhp! You git!!!

[Minch]

. . . a few more!

[simonprelude]

I have photo's of all the graphs so I can do the rest of the information during the week

These are 'calculated' figures at the flywheel. The dyno measures the losses while the wheels coast back down to rest.

Simon did you record at what rpm the peak power was made at?

[Paul]

Kevin ... I can confirm all figures from my graph - I'll use the one when the OEM filter was in
N5 XPW ... 254bhp @ 7,400rpm ... 189lbs/ft @ 5,700rpm

I think my problem has been many of the horses getting severely sea sick as the car made it's way from Japan to Cyrpus, then from Cyprus to England ... I'm sure I'll get a better reading once they've recovered and are feeling like going for a gallop again

[Senninha]

A great day with a great result for me and S2 , even beating the CSL!!!

A special thanx to Paul for taking my mate Terry out in his dream car, the RS4. Thanx also to Kevin for recording and loading the video's and sound-bites, its nice to know what everyone in the rear view mirror is listening too

Luke, I still think we should have set Bessie loose on the rollers :lol:

Here's a few photo's from Terry, the best one IMO is of Matt, which still has me laughing, sorry Matt.

regards