Max top speed

eEm · Post by **eEm** » Fri Jun 08, 2007 1:00 pm

M10 coming in to stAlbans, long sweeping left hander going down hill.
4,800rpm needle went past 140mph, plenty of revs left just no grunt.

Don't you hate it when somebody borrows your car with a full tank of 98ron and gives it back 3/4 full of 95!!!!! Would have been kinder to bend me over and stuff a tenner in my mouth when done!!!!!

According to the owners manual for a 95' celeb top speed in 5th is 128mph!? What is it supposed to be for the turbo?

TWR · Post by **TWR** » Sat Jun 09, 2007 8:10 pm

My richmod-Turbo runs 206km/h at GPS. Without richmod it runs 200km/h at the same Track. I am a bit disappointed.

clubman_dan · Post by **clubman_dan** » Sat Jun 09, 2007 8:41 pm

it must have reached that speed quicker though?

VanDerGraaf · Post by **VanDerGraaf** » Sat Jun 09, 2007 9:13 pm

TWR wrote:My richmod-Turbo runs 206km/h at GPS. Without richmod it runs 200km/h at the same Track. I am a bit disappointed.

You should be able to go faster with the mod.
I have had 210km/h and the car was still accelerating.....

JohnTurbo · Post by **JohnTurbo** » Sun Jun 10, 2007 4:00 pm

The t2 has run out of puff at those speeds. Doesn't matter what chip you run, it just can't flow that amount of gas.

Get a bigger turbo.

TWR · Post by **TWR** » Mon Jun 11, 2007 1:55 pm

The Topspeed isnt very importent for me, so thats ok...
But over 4000rpm the boost goes down. at 5000 the Boost ist only at the end of yellow. The rpm-range is to short.

Would I have a bit more Boost if I screw the threaded rod from the Pressure-Tin(?) ? Or is it to dangerous?
Sorry for my bad english.
And sorry, I know its a bit offtopic.

Duke of Cruel · Post by **Duke of Cruel** » Wed Jun 13, 2007 7:12 pm

My completely stock 480 turbo1989 manual 215k km, goes 210 on the guage.
But not for long

DoC

aibast · Post by **aibast** » Wed Jun 13, 2007 7:38 pm

I still don't get it. Does the 5th gear have no rev limiter. As said, you can have tons of power, but the gearing gives the max top speed.... As I understand, at the moment only the amount of power vs wind resistance and drag is the main thing here. If you calculate a little with the gearing then you get that the tops speed on our 480 with its stock gearing is now 130 mph or 210km/h @ 6000 rpm on the 5th gear.

VanDerGraaf · Post by **VanDerGraaf** » Wed Jun 13, 2007 8:55 pm

Yeah, but the rev limiter is 6250 rpm is it not?

Plus, people have had more than 130 mph/ 210 kph verified with GPS, unless they were all lying, which I seriously doubt.

TWR · Post by **TWR** » Wed Jun 13, 2007 9:30 pm

I think aibast is right.
Mine does 5700-5800 at Topspeed(206km/h on gps) So the theoretical topspeed would not be higher than 210-215km/h at 6200rpm.

Van · Post by **Van** » Thu Dec 20, 2007 9:04 pm

Going downhill on a German Autobahn I floored it. The needle went off the scale, resetting avg speed on the computer showed 213km/h (132mph). Then a van changed lane and I had to brake hard.
Under normal conditions it will do 195km/u (121mph).

aibast · Post by **aibast** » Fri Dec 21, 2007 8:35 am

but still the gearing is the thing that limits it. Thats why supercars have 6 gears and so on.

JohnTurbo · Post by **JohnTurbo** » Fri Dec 21, 2007 8:49 am

Van wrote:Going downhill on a German Autobahn I floored it. The needle went off the scale, resetting avg speed on the computer showed 213km/h (132mph). Then a van changed lane and I had to brake hard.
Under normal conditions it will do 195km/u (121mph).

Quite right to do it that way...the speedo overreads by between 5% and 10%.

My nissan is very nearly 10%.

Stupid laws, why can we have accuracy? (uk at least, speedos have to overread, by a max of 10%)

Christy · Post by **Christy** » Fri Dec 21, 2007 11:25 am

I got 138 on the speedo on a safe flat road... got scared though so backed off accelerator. Was in fifth and revs still weren't quite up to red line.

Ettore Bugatti · Post by **Ettore Bugatti** » Fri Dec 21, 2007 12:34 pm

Turbo diff is different in ratio then a ES/S diff.(3.73vs 4.07)

Loki · Post by **Loki** » Sun Dec 30, 2007 3:59 am

Ive managed 2 get mine 2 a little over 140mph on the clock. I was 'drafting' a Evo @ the time. U should of seen his face wen we stopped @ the roundabout. He was gutted. His m8 in the passenger seat was pissing himself laughing @ him coz he darent go any faster.
This happend b4 my crash. Im shit scared 2 go over 70 now. Not good lol

Only Dust · Post by **Only Dust** » Sun Dec 30, 2007 5:10 pm

135 then felt like i hit treakle can only assume the turbo got to hot and said please stop now im going to melt into a metal ball and drop off the manifold lol

mesa thinking t 25/28 time!

stanik_jr · Post by **stanik_jr** » Mon Dec 31, 2007 6:16 pm

195km/h with open popups

666VIVA · Post by **666VIVA** » Sun Jan 13, 2008 1:15 am

Top speed - German Autobahn
All the way round the clock, although front end gets very LIGHT AND SCARY
ten years ago in my old black turbo, now getting T4 power, although the new Volvo v8 would fit nicely, especially powering the rear wheels, then will try another top end run .....
Clive
Blue 480 Turbo finally restored, although work in progress
Black 480 Turbo mad rwd project

vivaXhope · Post by **vivaXhope** » Sun Mar 23, 2008 8:46 pm

I had off the 140mph clock on my GT, I would guess around 143-145mph, although I would loved to know how far out this was by checking it against satnav. The massive hill contributed quite a bit as well. Still fun, nonetheless.