I was thinking about this the other day and if a stock 20vt can do around the 150 mph mark surely some of the big bhp cars on here, with some tweaks of course, should be able to do 200mph taking the coupe into super car territory.

Aerodynamically speaking you need 4 times the power to go twice as fast (ignoring rolling drag). So as we only need to add a third more speed and if my math is good then that's a 1/3rd of 4 times the power (880 bhp)needed to achieve 200mph or 293 bhp. Now I'm sure the 300 bhp cars on here can't do 200 mph owing to the rolling drag of the car, but I wonder if the 400 + cars, with appropriate gearing, could get there?

Someone looked at this ages ago, a chap in South Africa if I recall, but I don't think he ever got there!!

In a coupe with bog standard aerodynamics and rolling wheel radius, you need 396bhp@ wheels at 200mph.

In a 6 speed car this is at 7,260rpm in 6th.

In a 5 speed car this is 7,950 in 5th.

I seem to remember that Barbz got 177 in his coupe before bricking it. I think Nigel/Flea have worked out in theory how fast their cars would go gearing wise.

There's never been a coupe at bruntingthorpe/v-max AFAIK

Down a 2 mile straight I got to an indicated 175mph. I braked for the corner quite early but the numbers weren't really go up much by then. It flew up to 165mph though.

To get to 200mph you would need some serious power and a VERY long straight.

EDIT - it was quite a hot day, some colder air may have helped.

does any one know of a straight long enough in the UK to do this?

look its never gonna happen, look at some of the high spec skylines out they with 1000bhp and they just make it to 200mph

M1? Seriously though I think Bruntingthorpe's straight is about 2 miles, so with a reasonable entry speed and one of the highest bhp coupes who knows? Maybe 180-190 could be achievable but I'm not sure I'd like to do it in a coupe.

even a twin engine coupe couldnt get to 200mph, its just not gonna happen

...and Ferraris manage it with 400bhp. It's because Skyline's are shapped like bricks.

what ferrari with 400bhp manages 200mph, dont quote estimated

Mine was down Bruntingthorpe.

I have said this before, entry speed doesn't matter that much. Say you were going 90mph into the corner. How much distance does it take to get to that speed. 1/8th of a mile? So it doesn't make hardly any difference when talking about top speeds because you cover that distance in a blink of an eye almost.

I think you would need over 600bhp to get close.

Fair point on the entry speeds, I hadn't thought about it that way.

Just to add, at 175mph my car still felt very stable. Not sure what another 25mph would be like though.

iv found a 430 which hit 200mph but thats a 4.3 v8 with 490bhp and Curb Weight of 3,196 lbs.

but before you go oh theres been coopes with 500bhp, that v8 isnt being streesed out and is designed to do what it does best, the coupes engine was never intended to produce 500bhp and more, plus how much damage would you do to just get to 200mph, it would never cruise without screaming its tits off please let me die now

click

was that clocks or gps?

Alright, so they don't quite manage it, but my point about the skylines stands. When I say a coop needs 400bhp @ wheels, there is no room for argument. I'm using the laws of physics factoring in aerodynamics and force. It may well be that there is no straight long enough for a coop to amanage it, but it will get there.

It might be worth noting that 200mph is 90 metres per second, I hate to think what the stopping distance is!!

On google it is claimed a 700 bhp Celica cracked 202mph, I would say the coop is slippier than the Celica, but not by much, so 600+ would be needed, but thats from a completely non mathmetical opinion!

Trappy, I'm interested how did you calculate that power figure?

look saying 400bhp is fine but how long can that engine produce 400bhp without going bang

when your on the rolling road ok my car made !"*bhp, but that was acheved for 1 minute or so untill the tuner lifted off, you try that on a motorway for 10-20 minutes,

It might well do as the coupe would be out of it's power band at the top end of the rev range so it would need higher peak power to allow for the 400 bhp needed at nearly 8000 rpm as trappy worked out

look theres one way to work this out, is the any on johnS's rolling road printouts on here, they should have a top terminal speed on them, if there not bugati veron speeds its never going to happen on the road

I'm not sure I would want to go 200mph+ in anything....anyone seen that RX7 in one of the american deserts blowing a tyre........it looked a little bit painful

I agree it will be very dfficult to achieve especially finding a straight road long enough but it is possible with enough power.

Maybe not, I wouldn't like be behind the wheel without serious protection, but just a thought for an event or something.

well one day you might see a coupe do 200mph but it wont be a 20vt engine pushing it lol

That wouldn't work would it? As RRs only go up to 4th gear and all it will tell you is in theory a car can do 25mph per 1000 rpm thus in theory it should be able to do xxx mph. But in reality its a different story?!

I once drove at 144mph (GPS) in my 300 bhp coop, in Europe, and that was scary and quick, the car still had some left I reckon, but when I looked up I saw a bridge way off in the distance, split second later I was flying under it, things were moving way too quickly for me, I lost my bottle and let up!

Here's how to make a Corolla do 200mph:

http://www.fensport.co.uk/FensportCars/Corolla_GT4.aspx

I was shocked seeing a turbo+ doing over 170mph chasing a gt3 on you tube but 200mph wow !