Part 12: 13B Rotary Engine Rebuild - My 76 Mazda RX-5 Cosmo Restoration
Just as I promised last episode, it is finally time to build the engine!
Part 12 of my RX-5 Cosmo restoration covers the entire process of building
the 6 port 13B Mazda rotary engine. While this engine is a hybrid of GSL-SE
RX-7 and Cosmo parts, the process is the same for any rotary from a 12A to
a 13B NA, 13B turbo, 13B-REW or any
other variant of the 13B. This video shows the whole process of the engine
build, starting from measuring the rotors and covering everything else
including clearancing the side seals, assembling the rotors, complete
assembly the short block, setting the eccentric shaft end play and
installing the front cover and everything underneath it. It's probably the
most complete engine build video outside of what you can buy from the
vendors, and as such, is an hour long. After this one, I'm going back to
videos under 20 minutes. But for now, grab a beverage of your choice, sit
back, and enjoy.
Weber 36dcd carburettor
Some info on the Weber 36 dcd carburettor. This carb is so widely used but
so little info about it on the net. Hope this helps.
Best Of Rotary Sounds
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1982 mazda rx7. series 5 13b street port, full RB street race Exhaust, weber 48 ida, rats nest removed
The Mazda Rotary Engine Part 1
Educational film by Toyo Kogyo about the Mazda Rotary Engine. Shows how the
Rotary engine works with comparisons to the Piston Engine. Also shows the
Mazda RX500 test vehicle on a banked circuit and the Mazda Cosmo Sport (or
110S). Originates from the late 60's.
Building a 13B-REW
This is how a 13B engine is brought to life from the Mazda factory.
Courtesy of RE4life.com
"Mazda Factory's veteran Engineer, Mr. Uchitani shows how Rotary Engines
are assembled. Amazing that each RE has been built by hand until 2003!"
Russian Rotary Vane Engine
Rotary Vane Engine proposed to power Russian hybrid car 'ё мобиль'
Mazda 3 sedan 20b racecar First race of 2013 (Zolder)
Mazda 3 sedan 20B racecar. (axela)
3 rotor engine with approx. 450hp (N/A, no turbo)
Rear wheel drive
Team: Van Herck Racing
Driver: Werner Van Herck (B)
event: FIA GT
track: Circuit Zolder
race series: Supercar Challenge http://www.supercarchallenge.nl/
date: 19, 20 and 21 april 2013
This video includes footage from the training session, qualifying and the 2
races of the weekend.
Qualified 3rd in GTB class (out of 5 entries) and 14th overall (out of 17
race 1 result: finished 2nd in GTB class and 12th overall
race 2 result: finished 4th in GTB class and 13th overall
improvements from last years car.
- bigger wing
- canards on front bumper
- new/stronger gearbox
- flat floor
- rear diffuser
More video's of this car on my channel.
Check out this site for more info about the car
Like my Facebook page
Mazda Rx7 4-rotor race car. The making of a Defined Autoworks Beast. [Offical Video]
Never before seen footage showing the assembly/start-up of our custom
4-rotor. It is the first 4-rotor since the 787b to use triple spark plugs
per rotor. It is also the first since the 787 to feature telescoping intake
manifold. Custom made slide throttle body system. A world first however is
the use of a center main bearing and 4-piece eccentric shaft. Quick specs-
9.7:1 rotors, lightened and race clearanced. Race main bearings, and race
rotor bearings, ceramic NRS 2mm apex seals. Custom stationary gears, Full
custom Peripheral Port in each rotor housing (defined auto), Aluminum side
housings for reduced weight. Needle roller bearing in the center housing.
4- Piece eccentric shaft 0:47
Dynamic engine balancing 1:23
Variable length intake 2:20
Engine assembly 2:32
Rotor rotation 3:49
Slide throttle 4:00
4-rotor startup and idle 4:30
All footage and editing was done by Defined Autoworks. Music by Ivan
Contact us at 614-592-7991 we build any type of rotary powerplant to the
See the build thread here-
Peripheral Port 12A Rotary Turning Over (Long)
Manually cranking a freshly built 12A peripheral port engine. The engine is
built with 3 window bearings, is doweled and has a shimmed oil pressure
regulator. Ultimately it will run EFI and be turbocharged. Plugs are installed (listen to those