Bruntingthorpe today 156mph

[simonprelude]

So why did my car only manage 156mph today at VMAX ??

Whatever I did, 156mph every time.

With passenger, without, TCS on/off, wing mirrors folding in/out.

All 7 high speed passes were 156mph, I just ran out of power, I know the weather was not ideal, absolutely sweating with not even a breeze but still.

Anyway a few pictures of the metal on show

[nsx_vtec]

well done matey :wink:

156 is not bad!!!!! 8)

[Pande]

Thats a good speed mate. At Elvinton I managed 162mph in 1.25 mile but my car had no cats and an aftermarket exhaust. How long was the run. I think the cats removed allows the engine to run more free at high speed. Maiby wrong though.

[Lankstarr]

So.... what sort of speeds were you reaching in say 4th?

[simonprelude]

I didn't check speeds in gears unfortunately

It was a very hot day so that didn't help, especially as the runway is 2 miles.

[trackdemon]

Funnily I ran later that afternoon (was busy taking photo's, then playing with Bens M Roadster, and finally had to dash up to Kwik-Fit for new pair of rear tyres after a puncture (£££OUCH£££!)). Guess what? Yes, 156mph. As I mentioned I suspect my exhaust is liberating a little more grunt - possibly to 3.2 levels - but thats still down on my 160mph best. Everyone commented on being 4-5mph down on previous best.

FWIW fastest in the Z4M was 152mph.... (although it was easily the most sideways :twisted: )

[modarr]

Could the air temperature be a factor?

Warm air is less dense than cold and releases fewer horses.

Mo

[simonprelude]

That's what I am thinking, either that or it takes more than 2 miles for an NSX to get to VMAX. I have had the car further round the clock than that before so it could have been anything really.

Could the air temperature be a factor?

Warm air is less dense than cold and releases fewer horses.

Mo

[Martin]

Hi Simon,

Was the 156mph what was measured on your car's speedo, or is it some kind of digital/gps reading?

156 sounds questionably and unbelievably much much too low...especially when some people have seen 187 on their speedo on stock 3.0 litres.

Cheers,
Martin

[simonprelude]

156 was using the speed trap equipment they had, it was a very warm day though and only a 2 mile runway with a lot of heavy dead air. It really was like a swimming pool.

1 other NSX (trackdemon) also managed only 156 with a 3.0 car and aftermarket exhaust.

Hi Simon,

Was the 156mph what was measured on your car's speedo, or is it some kind of digital/gps reading?

156 sounds questionably and unbelievably much much too low...especially when some people have seen 187 on their speedo on stock 3.0 litres.

Cheers,
Martin