phatgreatwall

iTrader: (-1)

the rx8 uses rotary engine, and its only like 1.4 liter or something, producing like 200 + hp, how does that work?

Nastyzed

The rotary engine is simply a engineering dead end. They get horrible gas mileage among other stuff I dont know why mazda uses them.Wankel tried and failed.

SuprAdam

Built properly Rotary's = as good if not better than piston engines.

They can rev like bikes.

http://auto.howstuffworks.com/rotary-engine.htm

rabbitman

iTrader: (3)

DashHavoc

I play with my wankle .... lol

phatgreatwall

iTrader: (-1)

so does that mean that the rx8's engine is better than most of the piston engines other cars use? what about when it comes to horsepower? if it can produce 200hp with 1.3 litre engine, doesnt that mean that it's really effecient?

JIMMY54

The most common rotary motor is called the 13B which is a 1.3 liter motor.
The 3 rotor motor is called the 20B.

Rotaries aren't bad on gas, not sure what buddy is talking about... If you modify them sure it'll chug gas but so will anything else. A non-turbo rx7/rx8 wastes as much gas as any stardard V6.

I've worked on piston motors and to be honest, the rotary motor has WAY less parts and very easy to work on. They even have videos that teach you how to rebuild, in roughly 2 hours. Plus to make power you just port the motor and add any forced induction, there aren't any aftermarket parts to buy for internals. Those guys putting down high HP numbers are done on factory Internal components. That alone is bad ***!!

Not to mention HP to Liter is unbeatable.

They are however sensitive to Tuning, but as long as you don't run lean/detonate your fine.

Nastyzed

hp per litre


HP PER CUBIC INCH.

B6T

If I was equally as ignorant as you, I would say the same about a domestic V8. Rotaries are an amazing engine, you would know this if you actually knew something about them and didn't base your opinion on what you hear on the internet.

JIMMY54

LOL Yes V8's can produce insane power.... but in theory if you keep adding rotors to the rotary motor sky's the limit. Most I've seen is a 4 rotor, but I guess same could be said to the piston blocks.

But the weight and compact size of any rotary motor has it's avantages. It can get expensive to build but end result is a extremely light effecient motor.

B6T

It's a lot easier to add rotors, housings and lobes to an eccentric shaft then it is to add cylinders to a block.

Next thing we're building at the shop is a 4-rotor and maybe even a 6-rotor...

JIMMY54

Do you have lots of experience with rotary motors? Last night my brother brought our recently completed rx7 to the etobicoke meet. Silver fully restored with a huge front mount, fuel cell, the works. You should definitely check it out.

As for building a 4 rotor, go for it.... Mazda did build a 4 rotor which I believe was what won le mans in 1991. Anyhow the toughest part is the ecentric shaft. But if you to a search on google or yahoo they have pictures of the shaft for the 4 rotor.

If you seach yahoo austrailia search a guy named hitman with a yellow first gen rx7 he made his own 3 rotor using 13b parts.

Nastyzed

2004 mazda rx8

MPG (city) 18
MPG (highway) 24
MPG (combined) 20
Annual Fuel Cost 2258


2004 GTO

MPG (city) 17
MPG (highway) 29
MPG (combined) 21
Annual Fuel Cost 2149


yeah those damn gas sucking american v8s LOL idiot.

J camel

So because a GTO has better milage than a RX8 it has the better engine? So by that rational, my sisters tercel is better than almost any car.

Honestly, learn a thing or two about how engines work. Adam posted a great link about how rotory engines work. Within that same site you can learn about how your V8 works aswell. After you've gained all that knowlegde you should argue (BTW, it is up to you.) Sometimes shuting the up can make you seem smarter.

Nastyzed

actually I was refering to B6Ts post but aviously you didnt notice,And yes the LS1 is a better engine