Originally posted by: dug777
the 4.2 diesel in toyota landcruisers
:thumbsup:
Wish you could get those stateside.
it's only a modded 13B N.A.
i like the compact, light and simple mechanics of the Renesis though. 91TTZ is right, it's more of a novelty than anything else. i really hope mazda or someone can squeeze more power out of it. it's not bad right now, 1.3L 238@8500
iversonyin
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OrganizedChaos
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the toyota 4age engine produces 150hp per liter in formula atlantic trim, race proven, and 20 years old.
HardcoreRobot
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I've read a bunch of long-term reviews, and the fuel economy seems to average between 15-17 mpg.
Considering that this is a small, light, aerodynamic car with a small engine, this is horrible. By comparison, a Corvette Z06 gets better mileage than that.
The fuel economy estimates put out by Mazda were very "optimistic". In fact, their horsepower figures were also "optimistic", and they had to revise them.
That would be the F-1 engine
7 million pounds of thrust - what do you think that will do for your 1/4 mile time?
OrganizedChaos
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Originally posted by: Armitage
That would be the F-1 engine
7 million pounds of thrust - what do you think that will do for your 1/4 mile time?
it would be hard to say, no matter what you made the track out of it wouldn't survive
How does this make me look unknowledgeable?
I don't judge a cars performance by power per liter, ricers use that argument and it is stupid. However, I am judging the engine itself (not that the car itself isn't impressive), but thats a different subject.
I simply find it amazing they're able to get that much from such a small displacement. If I remember correctly, it had the highest power per liter of any naturally aspirated engine available in a production car. I also believe that 9,000rpm was a first for a production vehicle. Lots of 8000+Rpm engines, no 9,000+. It has the same power as Hondas 3.0L V6 as well. Why wouldn't I be impressed?
It also pushes out more power than the Naturally Aspirated 3.0L they used in the Z32s (granted, it does have more torque). Heck, the S2000 would beat the N/A 300zxs in handling and straight line performance. The TT Z would have it on the straights though, while the S2K should take it around the twisties. Z32 Zs are notoriously overweight
. What is wrong with the Rotary? I understand how it works. I understand it uses less moving parts and it is technically a more simplistic design compared to a conventional piston engine. I also understand they burn oil, are torque-less wonders, and have crappy MPG. They are also very unreliable when used with forced induction. However, the concept and the way it works amazes me. I also appreciate the fact it is very compact and light. A great way to reduce overall weight and size of a vehicle. A huge importance to me. Why should I not be impressed with an engine that can crank out over 200hp in such a small engine (Physical size, and per liter)?
I'm not really sure why you're trying to crap on my post, it was a personal list after all. My list holds no bias towards any particular manufacturer, nor does it hold any bias towards certain aspects of an engine (raw power, huge displacement, etc). Just several engines I felt worth mentioning.
Maybe I was a bit hard on you. Sorry for coming off that way.
You already know that you can't measure a car's performance by power per liter, but you should also know that you can't measure an engine's performance that way, either. As you should know, the smaller you make the engine the higher the power per liter can be, since it's able to rev higher.
Remember, the formula for HP is HP = (tq x rpm)/5252.
As you can see, you have two variables here: torque and rpm.
Torque scales along with displacement roughly proportionally, given the same technology and compression ratio. In other words, if a 3L engine has 200 lbs of torque, a 1.5L engine will have about 100 lbs of torque. It won't be exact, but it'll be very close.
Now RPM varies a bit, since there's a lot you can do to an engine's design to raise/lower it. But generally speaking, given the same technology used, a smaller displacement engine will be able to rev higher than a larger displacement engine due to its smaller and lighter moving parts.
It's very easy to make a 600cc engine put out 150 hp per liter even using old technology, but it's much harder to make a 2L engine put out that much power. This is due to basic physics, since a smaller engine with smaller parts will be able to rev higher, given the same level of technology. Many RC car engines put out 300+ hp/liter, and they're extremely low-tech engines that they've made since the 1920's. They have tiny internals that can rev to 30,000 rpm.
To make a large engine do this, you'd have to use some seriously advanced engineering and exotic materials. A formula 1 engine is extremely advanced and it's amazing how high they can rev given the size of the engine. A RC airplane engine would be able to do this easily, though. Despite the huge difference in technology and quality control, it's simply easier to move small parts fast. The RC airplane engine uses 1920's technology, like steel and brass, and they're mass produced cheaply, so they're not very exacting engines. The F1 engine needs to use titanium and other advanced materials, and the quality control is crucial. So while you can overcome these limitations with advanced enough engineering, size still plays a huge role. 1.6L engine putting out 90 HP/L= not very impressive. 5.0L engine putting out 90 HP/L= impressive.
A hummingbird can flap its wings very fast, but an eagle couldn't come close to doing that. It's not that the hummingbird is built much different than any other bird, it's just really small.
About the Z, it's heavy but not nearly as heavy as people make it sound. It's about the same weight as the Supra, and 300 lbs less than a 3000GT VR4.
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