Re: OT,Rotory engine

Posted by jdemaris on December 21, 2005 at 13:39:03 from (66.218.14.244):

In Reply to: OT,Rotory engine posted by Butcher on December 21, 2005 at 09:40:13:

I've still got two of the older RX7s. Mazda is still using the engines but they've been improved quite a bit.
Deere never found a good use for the engine and there were complications with fuel-efficiency and oil consumption.
Another poster mentioned good fuel efficiency - but in my experience that is one thing they were NOT noted for. Fun to drive - yes - they have an amazing torque curve - runs kind of like an electric motor.
My 1985 2 rotor 1.1 liter RX7 gets around 22 MPG at its best on the highway. My son has an 97 RX7 with the 1.3 liter rotary and he can get up to 24 MPG. That's pretty poor fuel mileage for such a tiny car. My 1979 Datsun 280ZX 2+2 with the 2.8 six-cylinder engine can get 26 MPG and it's a much heavier car.
They are fun little cars, though. The new 2006 Mazda RX-8 still has a 1.3 litre 2-rotor engine and is rated at 25 MPG which is still not very good mileage when compared to other cars of the same size class and horsepower. Can't say I ever drove a new one, though.

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