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The mkiv Supra Owners Club

200mph british supercar which does 70mpg


Whitesupraboy2

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Looks very much more like a TVR influenced style to me. I have to take those figures with a huge pinch of salt. Actually, I just don't beleive it. A 6.6-litre V8 turbodiesel engine which produces 550bhp, returning 68mpg at 70mph.. not possible IMO :)

 

My 2.2 diesel Civic can't do that.

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It looks like they have been talking about this thing since 2002, at which time it had a 3.2 V6, then in November 2006 it had a 6.6L GM truck diesel engine (as above I suppose), but only 375hp and 520lb ft, returning 60mpg at 56mph. 8spd autobox apparently is what's creating the economy.

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Don't see why it couldn't be possible, Vauxhall did it with their Diesel VX.

 

What, they got lower fuel consumption out of a 6.6L V8 than BMW/VAG/PSA/Honda/etc can get out of a ~2L I4 ?

 

Took a while to find, but the Opel Speedster (is that the same thing?) has a 1.3L Diesel engine..

http://www.forum-auto.com/automobile-pratique/section1/sujet43830.htm

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I don't particularly like the shape, but if those figures are true, then its potentially a huge leap forward in economy IMO.

 

If you could chuck a decent engine like that into a Supra and have the performance for twice, three times, the mpg, I might even consider it! :)

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What, they got lower fuel consumption out of a 6.6L V8 than BMW/VAG/PSA/Honda/etc can get out of a ~2L I4 ?

 

I think thats mainly because of the oil companies paying off the car makers. The engines can be made more powerful and to have better fuel consumption but they don't. I don't think its a big conspiracy, i think its just business.

 

Take most electrical goods, they have built in faults so that after 5 years or so they will fail. The manufacturers could easily make things last a lot longer, in some cases maybe forever, but that wouldn't be cost effective.

 

Nice to see someone going against the grain, showing what they can do and then giving us the opportunity to buy it. I'm guessing with the credit crunch and electric cars, powerful economy is the next big thing.

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I think thats mainly because of the oil companies paying off the car makers. The engines can be made more powerful and to have better fuel consumption but they don't. I don't think its a big conspiracy, i think its just business.

 

Take most electrical goods, they have built in faults so that after 5 years or so they will fail. The manufacturers could easily make things last a lot longer, in some cases maybe forever, but that wouldn't be cost effective.

 

Nice to see someone going against the grain, showing what they can do and then giving us the opportunity to buy it. I'm guessing with the credit crunch and electric cars, powerful economy is the next big thing.

 

LOL. One might wonder these things sometimes, but to suggest it as fact and really believe it is something else entirely :)

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Looks very much more like a TVR influenced style to me. I have to take those figures with a huge pinch of salt. Actually, I just don't beleive it. A 6.6-litre V8 turbodiesel engine which produces 550bhp, returning 68mpg at 70mph.. not possible IMO :)

 

My 2.2 diesel Civic can't do that.

 

I thought this, then I thought this.

 

Go back to the 60's and tell someone we will develop an engine which revs to 9000rpm can do hundreds of 1000's of miles without a problem and produces 600BHP. They would of laughed at you.

 

Same with computers imagine saying in 1990, they'd do what they do today and be as small as they are.

 

What some people can do is amazing.

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Sounds like they're trying to dupe investors so they can get more money IMO. I'm sure they did see 70mpg when lifting off on a very slight decline, but I doubt the ministry's figures would be anything like.

 

How can you be so dismissive :D

 

The only thing that makes me think that one day someone will make a big jump is the fact that engines only produce something like 25% drive from the burning of petrol (im sure i read that somewhere), rest is wasted in heat, noise etc...

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Rear of this car is ugly as hell. Interesting read about 6.6l engine doing impressive mpg figures. Hope it will come true. I'm just wondering, what goverment will do with this mahoosive capacity and power (yet economical) engine at the time they promote 1.1 sheds :D

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Take most electrical goods, they have built in faults so that after 5 years or so they will fail. The manufacturers could easily make things last a lot longer, in some cases maybe forever, but that wouldn't be cost effective.

 

I see what you're saying, but I think you mean that electrical goods are designed with a certain life expectancy, either in terms of hours or number of on/off cycles. Things are not designed to have 'built in faults', but are built at a price to make them affordable and also to ensure that there is a future market for the next generation/iteration of the technology, or companies would go out of business

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I'm just wondering, what goverment will do with this mahoosive capacity and power (yet economical) engine at the time they promote 1.1 sheds :D

 

Probably try to bury it. I had a 1.6 Focus for work last week, averaged 32mpg on the motorway (sensible driving). Absolute crap to drive, screaming revs, no power and rubbish economy. I can get 25mpg at the same speed on the motorway in the Supra over the same distance

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They say that the key to the amazing fuel consumption is 'torque multiplication'....... what that means is an auto gearbox that isn't locked up :)

 

Its also an 8 speed auto with massive overdrive so that at 56 mph the engine is turning at 402 rpm!

At this engine speed friction will be bugger all... so efficiency will be much better than at high engine speeds. Combine this with common rail high pressure direct injection and variable turbine geometry turbos and it could be producing decent torque down at these speeds, enough to easily cruise at 56 mph.

 

Big engine + small car = easy low speed lugging. My Westy Seight 3.5i V8 will pull all day in 5th. No need for other gears really!!

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Looks very much more like a TVR influenced style to me. I have to take those figures with a huge pinch of salt. Actually, I just don't beleive it. A 6.6-litre V8 turbodiesel engine which produces 550bhp, returning 68mpg at 70mph.. not possible IMO :)

 

My 2.2 diesel Civic can't do that.

 

Of course its possible its just that its not been possible till now or in near future.

 

Your comments remind me of the man who used to be in charge of the patent office in the 1840s (or around that time) he said this ( remember where talking in the 1840s here).

 

"im retiring as everything that can be invented has been invented"

 

What a laugh:D

 

Diesel may just be the way forward if you ask me.

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