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.
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!"
20b Second Gen RX-7
Car built by Mechanical Power Systems in Canada.
MPS Mazda RX7 3 Rotor 20B Peripheral Port turbo w/Slide Valve and custom eccentric shaft
Street Legal... www.mpsys.ca
RX3 , 13B PP , Burnout
My mates RX3 , Towed car to new house , took it for quick hit down the
street.. Slipped on the clutch , HAHAHAHA
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
Peripheral port 13B idle
Homebrew 13B at idle; fabricated ports, header, intake manifold, etc,
breathing through a Weber 48 IDA.
Trying some tricks with porting and header design and it only fired up for
the first time about an hour ago, so I have no idea of power output, and
very little desire to make unrealistic guesses.
Mazda Rotary Dyno Massive 1664HP
This engine has massive HP, WOW Awsome also on braptv.com Mazda Rotary
Queen Street Racing 4rotor GT60 1664HP
20B rotary RX-7 Spirit R: The Ultimate Street Mazda
Built by Promaz Automotive, we think it's hard to go past Steve's wicked
Series 8 FD RX-7 if rotaries are your game. Limited to around 1500 unit's,
the Spirit R was the last of the RX-7's and featured a lot of upgraded
factory parts as well as a low 1100kg weight.
Now powered by a lethal Promaz triple rotor 20B extend port rotary engine,
power is aided by a Garrett GT42R turbo
and MicroTech fuel system and transmitted through an Albins 5-speed gearbox
and KAAZ rear end [ http://www.promaz.com.au ].