Fifth Gear 200mph car

Author
Discussion

Mr10secs

376 posts

166 months

Sunday 24th April 2005
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johnny senna said:
OK, so someone on here has calculated that the Lotus will need somewhere over 530 BHP or whatever to do 200 mph.

The Lotus still won't do 200 mph at Bruntingthorpe though. The runway isn't long enough.

If GuyR's 620 BHP Ruf modified GT2 can only do 196 mph at the last Vmax when we know its top speed is a true 207 MPH IIRC (only limited by gearing) then that means that the Lotus needs a genuine top speed of about 215 mph to actually do 200 at Brunters.

Don't forget that AdamT's Ruf CTR Yellowbird has a genuine top speed of 213 mph, but it can only do 200 mph at Brunters on a good day, although its brakes do become an issue, it's an old car.

So 5th Gear need to get their asses to Nardo or Ehra-lessien (where the Mac F1 did its thing) or they have no chance.

So, they need to optimise aero, get the engine making at least 550 BHP, and hire Ehra-lessien......easy eh?


Rocket Ronnie hit 210 at brunters and Norris' EVO hit 201 , hell if were gonna go abroad why not UTAH !!!!!

Dude

Gazboy

52,068 posts

182 months

Sunday 24th April 2005
quotequote all
Mr10secs said:

johnny senna said:
OK, so someone on here has calculated that the Lotus will need somewhere over 530 BHP or whatever to do 200 mph.

The Lotus still won't do 200 mph at Bruntingthorpe though. The runway isn't long enough.

If GuyR's 620 BHP Ruf modified GT2 can only do 196 mph at the last Vmax when we know its top speed is a true 207 MPH IIRC (only limited by gearing) then that means that the Lotus needs a genuine top speed of about 215 mph to actually do 200 at Brunters.

Don't forget that AdamT's Ruf CTR Yellowbird has a genuine top speed of 213 mph, but it can only do 200 mph at Brunters on a good day, although its brakes do become an issue, it's an old car.

So 5th Gear need to get their asses to Nardo or Ehra-lessien (where the Mac F1 did its thing) or they have no chance.

So, they need to optimise aero, get the engine making at least 550 BHP, and hire Ehra-lessien......easy eh?



Rocket Ronnie hit 210 at brunters and Norris' EVO hit 201 , hell if were gonna go abroad why not UTAH !!!!!

Dude


Jun did just that a few years ago with that yellow Supe- 247mph.

big@l

215 posts

159 months

Sunday 24th April 2005
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http://ppcmag.co.uk/staffcardetail.asp?id=8

This'll do it.. next summer mebbe?

Jolly

829 posts

159 months

Sunday 24th April 2005
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lol

simonrockman

5,598 posts

186 months

Monday 25th April 2005
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big@l said:
http://ppcmag.co.uk/staffcardetail.asp?id=8

This'll do it.. next summer mebbe?


I love the "practical" bit in the title.
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4wd

2,289 posts

162 months

Monday 25th April 2005
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27 litres! Absolutely awesome. Can you imagine the sound without exhaust?!

GregE240

10,855 posts

198 months

Monday 25th April 2005
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Plotloss said:

Davey S1 said:


Fancy going halves on one for the next VMAX Mat?



Stop it now, stop...

I reckon that one is a replica and someone has been had to be honest...
You reckon?

Has the right airbox (OK, anyone could get one of them), but most importantly check out the intercoolers. Where are they? Why Greg, inside the rear wings. Just like a Yellowbird.

Would you go to such a colossal reengineering cost on a fake?

Unless Adam comes alongh and tells us otherwise, I reckon it could be kosher.

Plotloss

67,279 posts

201 months

Monday 25th April 2005
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Just seems too good to be true at $58K, with stickers everywhere, not yellow.

If someone has got a bargain I'm happy, jealous but happy.

Its also lacking the 'proper' wing mirrors isnt it?

The bonnet also doesnt look right...

GregE240

10,855 posts

198 months

Monday 25th April 2005
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They weren't all yellow.

Saw a red CTR in RUF being serviced.

Plotloss

67,279 posts

201 months

Monday 25th April 2005
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It just doesnt look right, its not as complete as Adams for some unquantifiable reason.

It almost looks like its entirely the wrong model to be a Yellowbird, almost 964 based.

But I am probably wrong about that point...

rallycross

8,925 posts

168 months

Monday 25th April 2005
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sell the lotus and buy that Cosworth and do it in that, at least its proven to do 200 + mph.

madrOD

448 posts

165 months

Monday 25th April 2005
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rallycross said:
sell the lotus and buy that Cosworth and do it in that, at least its proven to do 200 + mph.


Actually the Cossie will be for sale in September (Im 60 & retireing). Will be over 800bhp & past 205mph by then if all goes well,at Brunters of course have no idea what the old girl could do given the space. Its 212.4 on the limiter on my longest gearing.
Cheers Rod

Cross-eyed-twit

4,936 posts

191 months

Monday 25th April 2005
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I don't know if it has been mentioned yet (I jumped to the end of the thread) but the Esprit engine (Lotus 918) is a de-tuned race engine by design. It can produce 550-odd hp without much tuning and they are a good way to achieving this, (maybe nitrous is the final ingredient). The Elise GT1 has one fitted albeit tuned to a very high level by Lotus themselves. The gearbox should have been sorted with a Quaife or at least the Derrick Bell modification (with the higher 5th) mentioned on the Esprit thread.
Dom

dazren

22,608 posts

192 months

Monday 25th April 2005
quotequote all
Plotloss said:
It just doesnt look right, its not as complete as Adams for some unquantifiable reason.

It almost looks like its entirely the wrong model to be a Yellowbird, almost 964 based.

But I am probably wrong about that point...


If you are on about the black car that was auctioned recently in the US, it was a 4WD version. I imagine collectors would want the 2WD version? Still a bloody bargain though!

DAZ

www.barrett-jackson.com/auctionresults/common/cardetail.asp?id=175174

>> Edited by dazren on Monday 25th April 20:06

Twincam16

27,646 posts

189 months

Monday 25th April 2005
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Another 200mph option without too many drawbacks is a couple of superchargers on a C4/5/6 Corvette with the small block bored out to 6 litres. Should be good for at least 210 mph and unlike the Lotus it won't explode when it's done it.

big@l

215 posts

159 months

Monday 25th April 2005
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4wd said:
27 litres! Absolutely awesome. Can you imagine the sound without exhaust?!


I heard it at Bromley Pageant last year, the crows fell from the skies, the M25 developed structural defects and children ran off screaming, blood pouring from their ears. On the website it says that its going to be on their stand again at the Show in P'boro.

4WD

2,289 posts

162 months

Monday 25th April 2005
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Street Machine had a tale of a similar thing back in the 80's. Some guy in southend had a road legal drag '55 chevy, running an alcohol big block. It would either idle along at 15mph or run flat out at max throttle. It couldn't do anything in between. Allegedly the sound created immense sub bass pressure waves. One time the guy rolled up outside his local and various pint glasses shook off the bar and smashed. Cue everyone bowling outside in shock and awe.

joecooool

1,019 posts

159 months

Monday 25th April 2005
quotequote all
We have an Esprit here in town thats hit 214 mph. He has a built motor, larger turbos and the drive train to support the power.

I called him to let him know that you were looking for a car like his and he has no interest in assisting your show. We don't get your show here, but according to him, your show is biased against anything built in the US and he does not want anything to do with you guys. (He has Corvettes too)

Good luck with the search.

>> Edited by joecooool on Monday 25th April 21:47

5USA

5,564 posts

176 months

Monday 25th April 2005
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Glad to see there's so much recognition on here that the Corvette is the easy way way to pass 200 mph. Lotus Esprit is a great car but is already under stress before it's further tuned. Vette is built tough so plenty of scope to take it further. Also square tail is good for high speed aerodynamics without big spoiler and associated drag. Euro Vette speedo reads to 300 mph too!

Cross-eyed-twit

4,936 posts

191 months

Monday 25th April 2005
quotequote all
mmm, that will be the UN1-027 gearbox which is from Renault, NOT the motor. The clutch is a twin plate AP unit, so is strong. The driveshafts are probably OK as long as it isn't thrashed with torque but then they are attached to the RENAULT gearbox.
Like I said earlier, 3 posts or so, the engine (lotus 918) is a DE-TUNED race unit. De-tuned to let the gearbox survive, low boost in low gears etc. The race ECU they fitted will give up to 1.25 bar boost in all gears and makes the car SUPER fast. I don't just mean fast, I mean Blisteringly quick, as said by the bloke who drove it after it was built and then broke it and he's driven Vipers aplenty. He mailed the Esprit forum to explain the problems and the gearbox rebuild went awry due to a wrong shaped bearing fitted by the rebuild guys. When they get the gearbox sorted, and there are ways of making it handle 500 hp and similar lb/ft of torque as testified by the Lola/GT40 guys, then they should manage 200 mph no probs.
Phew!


"Lotus Esprit is a great car but is already under stress before it's further tuned"

>> Edited by Cross-eyed-twit on Monday 25th April 22:43