Mazda 4 Rotor engine --- Bow Down Bishes! - Lexus IS Forum
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post #1 of 7 (permalink) Old 05-16-2005, 02:30 PM Thread Starter
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Mazda 4 Rotor engine --- Bow Down Bishes!

The R26B four rotor engine
The R26B four rotor engine was developed for Mazda's racing program in 1990.
It was an all new design derived from the 13J engine (specifically the 13J-MM).
The LeMan's specification engine produces [email protected], 607Nm/[email protected], and engine capacity is 654cc x 4 rotors=2616cc
The Mazda LeMans 787B racer powered by this engine won LeMans in 1991, the making both the first Japanese manufacturer and the first non-piston engine to win.
Acceleration of the 787B is impressive, as it weighs 800kg, giving it a power to weight ratio of 1.2kg/bhp (2.6lb/bhp).
As a comparison consider the following: Ferrari F40 2.6kg/bhp (5.7lb/bhp), Porsche 911 turbo 4.5kg/bhp (9.9lb/bhp)
This will allow a 0-100m (328ft) sprint in ~2.5 seconds, and a 1/4 mile with a terminal speed of 250km/h (155mph) - somewhere around 9 seconds!
(actually maybe about 10 or 11, as the car is not set up for drag racing)

Unfortunately the rotary was banned from European racing by FISA in 1992.

To a certain extent the USA's IMSA GTP series is very similar to LeMans style racing and the RX-792P carried the rotary flag for a while.
The R26B used in this car was down a little in power and torque, [email protected], 570Nm/[email protected]


Mazda R26B Specifications
Layout: 4-rotor, in-line
Displacement: 654 cc x 4-rotor
Compression ratio: 10:1
Induction system: Telescopic intake manifold system
Horsepower: 690 bhp @ 9000 rpm
Torque: 448 lb-ft @ 6500 rpm
Weight: 180 kgs.
check this page for more info on 4 rotor engines and information on the 13J real cool stuff! http://cp_www.tripod.com/rotary/pg03.htm
icon_cool.gif zoom-zoom bitches![/b]
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post #2 of 7 (permalink) Old 05-16-2005, 03:06 PM
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now an RX8 with THAT engine would be HAWWWWWWWWWWWWWWTTTT !

awesome post..++rep

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post #3 of 7 (permalink) Old 05-16-2005, 03:59 PM
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intresting info, just a few years late.

The irrational part of me loves to think that my favorite vices (mnt dew, red meat and beer) have helped me build a super brain.
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post #4 of 7 (permalink) Old 05-16-2005, 04:55 PM
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Rotary is so cool. I wish they could make more torque. I'm waiting to see a 9 rotor 6.0l motor.
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post #5 of 7 (permalink) Old 05-16-2005, 09:08 PM Thread Starter
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Quote:
Originally Posted by Lextech1
intresting info, just a few years late.
Late for the rotor haters ....... I knew of this over a decade ago. Good reading either way... All motor 700hp hotness
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post #6 of 7 (permalink) Old 05-17-2005, 02:33 PM
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Quote:
Originally Posted by BigDaddyRich
Late for the rotor haters ....... I knew of this over a decade ago. Good reading either way... All motor 700hp hotness
thats what i mean. i love rotory engines, and owned a RX7 in the pastWhat i ment by the "late" comment was this info has been around since that car ran its first race.

The irrational part of me loves to think that my favorite vices (mnt dew, red meat and beer) have helped me build a super brain.
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post #7 of 7 (permalink) Old 05-18-2005, 01:10 PM Thread Starter
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Yeah I had an allmotor bridgeported 13B motor running dual weber carbs and a Racing beat header back exhaust.....


Can you say SHOOTING FLAMES
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