Bruntingthorpe today 156mph

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 :)

http://snap25.photobox.co.uk/3383486...80e3a59a6d.jpg

http://img.photobox.co.uk/1903699554...1a22a90ee3.jpg

http://snap28.photobox.co.uk/4497753...f172db6d70.jpg

http://snap25.photobox.co.uk/6990427...94bbf56aa0.jpg

http://snap28.photobox.co.uk/0459471...782a8e341a.jpg

http://snap25.photobox.co.uk/7029322...9abf5344cf.jpg

http://snap25.photobox.co.uk/4310174...50396e7f85.jpg

well done matey :wink:

156 is not bad!!!!! 8)

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.

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

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.

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: )

Could the air temperature be a factor?

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

Mo

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.

Quote:

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Originally Posted by modarr

Could the air temperature be a factor?

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

Mo

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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

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.

Quote:

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Originally Posted by 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

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