Paul C Posted March 14, 2009 Report Share Posted March 14, 2009 There's a calculator here, it's not perfect, but it's general enough to get an idea, without having a thread of charts and people talking about air temps on the day and taking it too serious etc... But as a rough guide: http://www.letstorquebhp.com/calculator.asp Was wondering when i gave up the (170mph) Esprit, what kind of performance level i was getting in terms of power to weight on the Elise, as there had to be a trade off on going nearly half the weight. My stock SE at 264 and weight of 1305kg puts out roughly 205bhp per ton. The Elise dyno'd at 170bhp and weighing 770kg comes in at 224bhp per ton. So aside from the obvious lack of top end and turbo, i'm not too down really, and interestingly (and god knows how as it can't know if i have the close ratio box or not and stuff like that), the other stats are pretty much bang on too... Would be interested if some of you clamheads would fire you info into it and see what you get, Kimbers must be pretty high. I used kerb weight and full tank figures on mine BTW. Quote Link to comment Share on other sites More sharing options...
Simon350S Posted March 14, 2009 Report Share Posted March 14, 2009 (edited) Well my Esprit currently weighs in at an estimated 800kg and with approx 220hp that makes it 279.41bhp per ton. Wow an estimated 0-60 time of 4.28 secs Beat that Pauly Oh, does it matter that the engine is in the dining room in bits and the wheels and suspension are in the cupboard under the stairs? It does? Bugger!!!!! That will increase the weight of the car significantly then! Edited March 14, 2009 by Simon350S Quote Chunky Lover Link to comment Share on other sites More sharing options...
Kimbers Posted March 14, 2009 Report Share Posted March 14, 2009 Well mine has 240bhp but a weight of around 890 which gives me 273.99 per ton. Quote Possibly save your life. Check out this website.http://everyman-campaign.org/ Distributor for 'Every Male' grooming products. (Discounts for any TLF members hairier than I am!) Link to comment Share on other sites More sharing options...
Paul C Posted March 14, 2009 Author Report Share Posted March 14, 2009 I've decided that Simon350s can be our Little lotus chat room mascot. It's an easy job, all you have to do is visit the Little lotus chat room once a day, post on a thread about Elises and Exiges and do this, again and again: In bits, you car is exactly as fast as my fridge. Quote Link to comment Share on other sites More sharing options...
Hippo Posted March 14, 2009 Report Share Posted March 14, 2009 220 BHP and a weight of 875 KG works out at 255.46... B) Quote Marge: Homer, I don't want you driving around in a car you built yourself. Homer : Marge, you can either sit there complaining, or you can knit me some seat belts... Link to comment Share on other sites More sharing options...
Simon350S Posted March 14, 2009 Report Share Posted March 14, 2009 Limited to once a day? I'll happily take the job though, I've been needing a purpose in life for a few months now! Thankyou dudes Quote Chunky Lover Link to comment Share on other sites More sharing options...
ian heighway Posted March 14, 2009 Report Share Posted March 14, 2009 Esprit S1 160bhp and 900kgs = 180BHP per Ton she mite be 32 years old but she can shift P.S. Kimbers your car is 890kgs with out the driver so it will be alot heavier and slower with you behind the wheel Quote Link to comment Share on other sites More sharing options...
Advantage Posted March 14, 2009 Report Share Posted March 14, 2009 If you've bought a Liz because of it's power to weight ratio then you've missed the point of the car altogether. Quote Link to comment Share on other sites More sharing options...
MPx Posted March 14, 2009 Report Share Posted March 14, 2009 Make way for the fat boys..... My fastest is the Carlton - 377bhp 1663KG gives 230 BHP per ton....but I accept not really very nimble in this company Quote Loving Lionel and Eleanor......missing Charlie and Sonny Link to comment Share on other sites More sharing options...
Mark Blanchard Posted March 14, 2009 Report Share Posted March 14, 2009 The X180 Esprit Turbo's has 215bhp. The car weighs 1386kg. So 155bhp per ton. Hmm . . . not so good in this company. Quote Mark www.lotusespritturbo.com Link to comment Share on other sites More sharing options...
superdavelotus Posted March 14, 2009 Report Share Posted March 14, 2009 Mine's been dyno'd at 400BHP and it's a GT so that's 1325KG = 301BHP/Ton Oh then I forgot that I have a rear wing and air con but lighter wheels and no spare wheel, so I reckon it's upto 1350KG so that still 296BHP/Ton. But going back to standard figures, the GT at 350BHP and 1325KG still comes out at a healthy 264BHP/Ton. David Quote Link to comment Share on other sites More sharing options...
Paul C Posted March 14, 2009 Author Report Share Posted March 14, 2009 If you've bought a Liz because of it's power to weight ratio then you've missed the point of the car altogether. Not making any kind of point mate, just a non serious tech topic in the little lotus area to see how the various spec engined Elise and Exige compare to each other*. Nowt more. *with a few 'little lotus' Esprits and the Odd Carlton as welcome visitors! Quote Link to comment Share on other sites More sharing options...
rocket63 Posted March 14, 2009 Report Share Posted March 14, 2009 My S2 comes out at 205.4 per tonne. Not bad for a 1.8 Quote Caught between a rock and a hard place in a catch 22 situation, So its 6 of one and half a dozen of the other. Your damned if you do, but your damned if you don't so shut your cock!!!!!!!!!!! Lotus Espirt Turbo S3 Lotus Esprit S4 Lotus Elise S2 Sport 130 Link to comment Share on other sites More sharing options...
th4neuk Posted March 14, 2009 Report Share Posted March 14, 2009 Ok the sport 160 weighs 690 and has 160 bhp So Power at Flywheel (BHP) : 160 Weight without Driver (KG) : 690 Power to Weight Ratio (BHP Per Ton) : 235.61 0 - 60 (Secs) : 4.83 0 - 100 (Secs) : 12.83 60 - 100 (Secs) : 7.99 Quarter Mile (Secs) : 13.27 Terminal Speed (MPH) : 101.72 Drag Strip Quarter Mile (Secs) : 13.17 Drag Strip Terminal Speed (MPH) : 102.93 The V8 is probably about the same as superdaves so that will be about 300bhp per ton The target once the chargecoolers are in though appears to be about 465bhp which would give me the 350bhp per ton I would like. I think that's about as far as I would go with it though as serious engine mods would be needed then. I think the 235bhp of the elise is fantastic though. They are a likkle road rocket!! Trouble is it all happens over 6k rpm so great on the track lol Cheers Quote Alan Croft 2000 V8 GT 87 Turbo Esprit HC 2000 Elise Sport 160 Link to comment Share on other sites More sharing options...
Katie Posted March 14, 2009 Report Share Posted March 14, 2009 In bits, you car is exactly as fast as my fridge. FPMSL Quote Just because you can, does'nt mean you should. Link to comment Share on other sites More sharing options...
DanR Posted March 14, 2009 Report Share Posted March 14, 2009 Also in percentage terms the added weight of driver and fuel has a bigger impact upsetting the BHP:tonne as the car becomes lighter. Quote DanR Link to comment Share on other sites More sharing options...
peter_england99 Posted March 14, 2009 Report Share Posted March 14, 2009 Are you Exige owners sure about your vehicle's weight? According to the Lotus website the Exige S' unladen weight is 935kg. Saying that, I'm still not sure what my Esprit weighs. Each time the V8 weight is discussed the data just seems to contradict the previous set of data. Quote Link to comment Share on other sites More sharing options...
DarrylV8 Posted March 14, 2009 Report Share Posted March 14, 2009 Paul C Nice little thread, thanks for that Quote Darryl & Sue Proud to drive and own since new a true British supercar the Evora GT430 Link to comment Share on other sites More sharing options...
SteveMcC Posted March 15, 2009 Report Share Posted March 15, 2009 Interesting stuff... S1 Elise. Taken unlaiden weight from the service manual. I've got my corner weight data somewhere but that had me in it and a half tank of fuel. The calculator asks for weight without driver - so 755kg has been used... results: Power at Flywheel (BHP): 217 Weight without Driver (KG) : 755 Power to Weight Ratio (BHP Per Ton) : 292.03 0 - 60 (Secs) : 4.15 0 - 100 (Secs) : 10.57 60 - 100 (Secs) : 6.41 Quarter Mile (Secs) : 12.54 I'd agree that that's there abouts B) Quote Link to comment Share on other sites More sharing options...
Hippo Posted March 16, 2009 Report Share Posted March 16, 2009 Are you Exige owners sure about your vehicle's weight? According to the Lotus website the Exige S' unladen weight is 935kg. Saying that, I'm still not sure what my Esprit weighs. Each time the V8 weight is discussed the data just seems to contradict the previous set of data. Peter you're right...just found a supplement page in the manual for the Exige S...935-949Kg it says Quote Marge: Homer, I don't want you driving around in a car you built yourself. Homer : Marge, you can either sit there complaining, or you can knit me some seat belts... Link to comment Share on other sites More sharing options...
Steve Type 085 Posted March 16, 2009 Report Share Posted March 16, 2009 My 88 esprit on paper is 215 bhp at 1300 plus Kg which is the same as RX8 mazda its not that great, but it drive well above the numbers, it pull strong from 2000 rpm to 7000 rpm, it torque that makes this difference and makes a car quick through corners not power to weight. Steve Quote Link to comment Share on other sites More sharing options...
USAndretti42 Posted March 17, 2009 Report Share Posted March 17, 2009 I would say that torque might make a car quick out of a corner not through a corner but your point is right. You can't predict a car's performance just from one number like power-to-weight. A turbo engine will have a fatter torque curve than a normally-aspirated engine that gives the same power as the NA engine will have to rev more quickly to achieve its peak power. What is important is the area under the curve or the sum of the engine outputs at all the speeds you pass through. Power-to-weight will work, though, when you are comparing similar types of engines in different cars. Quote S4 Elan, Elan +2S, Federal-spec, World Championship Edition S2 Esprit #42, S1 Elise, Excel SE Link to comment Share on other sites More sharing options...
Paul C Posted March 17, 2009 Author Report Share Posted March 17, 2009 There's a calculator here, it's not perfect, but it's general enough to get an idea, without having a thread of charts and people talking about air temps on the day and taking it too serious etc... But as a rough guide: :D I know a few of you guys like technical perfection, but as i said right at the start this is a 'general', 'rough', not 'perfect' and 'not too serious' guide. For a bit of 'fun' If you guys want a all data, torque, air temp, final drive / whatever exact thread then this aint it! It's in a chat room... I did not want some long boring techy thread with the same ten guys chucking graphs and sensor stats at each other, there's enough of those, and this ain't pretending to be one, if it was i would not be reading it myself. Quote Link to comment Share on other sites More sharing options...
Kimbers Posted March 17, 2009 Report Share Posted March 17, 2009 Hippo, the unladen weight is effected by many things, especially packs. The performance pack and sport pack can effect the weight, as can A/C, Forged alloys and CAT 2 exhaust. I have the wheels and Exhaust with a saving of circa 20kgs overall (these are approximate figures), however I have the A/C which, with a single bound uses up half of that weight saving! the other thing to take into account is driveability. Theres also driveability to take into account. The S model is all about face ripping amounts of Torque which gives you acceleration in a much broader power band, making better accelration figures easy to achieve for drivers of all skills. Quote Possibly save your life. Check out this website.http://everyman-campaign.org/ Distributor for 'Every Male' grooming products. (Discounts for any TLF members hairier than I am!) Link to comment Share on other sites More sharing options...
Bibs Posted March 17, 2009 Report Share Posted March 17, 2009 This may help... Quote 88 Esprit NA, 89 Esprit Turbo SE, Evora, Evora S, Evora IPS, Evora S IPS, Evora S IPS SR, Evora 400, Elise S1, Elise S1 111s, Evora GT410 Sport Evora NA For forum issues, please contact the Moderators. I will aim to respond to emails/PM's Mon-Fri 9-6 GMT. Link to comment Share on other sites More sharing options...
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