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.
How to rebuild a Rotary Bridge Port engine ~ fullBOOST tech files
FullBoost Tech Files, Ep 1 ~ Rebuild
and Bridgeport of a 13B rotary engine @ Mr Parts.
We have started with a stripped down 1984 Mazda RX7 13BT engine, and will
run through the steps involved in bridge porting the engine, then assembly,
to the start up in its new home, a 1972 Mazda 808 (RX3). [
Get your track gear!
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Montaje del Motor Renesis - Mazda RX-8 - NO REBUILD
Proceso de remontaje del motor Renesis de un Mazda RX-8. NO ES UN REBUILD
de Motor puesto que no se han cambiado ninguna junta de estanqueidad,
sellos de aceite o sellos de motor. Se ha limpiado todas las piezas y se
han reutilizado, con el propósito de practicar el montaje del motor y
almacenarlo de una manera mas compacta para en un futuro rehacerlo con
piezas destinadas a su uso en competición.
REPITO: NO REBUILD, el motor no funcionará puesto que no tiene juntas de
estanqueidad, es un video de propósito meramente instructivo.
Manual de Taller:
MAZDA RX7 Rotary Engine, How It Works
MAZDA RX7 Rotary Engine, How It Works
The MAZDA RX7 rotary or Wankel engine is a marvel of engineering. It has
won more races than any other vehicle in its class. Rotary engines develop
a great deal of power for their weight (power to weight ratio). They're
also able to develop high RPM bursts like no other internal combustion
engine. Learn the details of it operation, how the rotor transfers power to
the output shaft, what it the stationary gear set, what is the rotor to
output shaft ration and relationship. Get all the specifics on the rotary
engine's operation here in this video.
Presented using advanced software CG animation technology to help you
understand. Part of our Automotive Technology Rotary Wankel engines and
MAZDA RX7-RX8 series shown here on this channel. Enjoy...
Amazon Printed-Books & Kindle:
Google Play Android APPs:
Amazon Video DVDs:
Barnes & Noble Nook:
Apple iTunes iPad:
Part 25: Turbo Manifold Fabrication - My 76 Mazda RX-5 Cosmo Restoration
Episode 25 of my '76 Mazda RX-5 Cosmo restoration is another long one,
covering in its entirety the fabrication of the turbocharger manifold. Suddenly the engine bay
started to look a little cramped when I began to position the GT3076R, so
it took some plumbing to build the required manifold. Constructed out of
1.5" SCH40 304 stainless steel pipe, it was fully TIG welded with an argon
back purge. Yes, this is another long episode because I wanted to show the
manifold fabrication process in glorious detail so that this video would be
a useful resource for anyone wanting to build a custom turbo manifold. So as I say, grab your favourite
adult beverage, sit back, and enjoy. Included in this episode: fabricating
a 13B Exhaust flange, fabbing a merge
collector, positioning a turbo in the
engine bay, measuring, cutting and fitting stainless pipe and els, tacking
in position, setting up a back purge, final welding, port matching, custom
A huge thank you to ATP turbo (
http://www.atpturbo.com ) for helping
out with some of the parts used in this episode.
Part 14: Oil Pan! Engine Bay! Floor! - My 76 Mazda RX-5 Cosmo Restoration
Part 14 of my '76 RX-5 Cosmo restoration is a collection of three random
tasks. First, I add a -10 AN fitting to the oil pan to serve as a turbo oil drain. Next, I continue stripping down
the engine bay by scraping off the undercoating and then cleaning off the
residue with kerosene. Finally, I begin some of the work on the floor by
patching a small area on the drivers side of the transmission tunnel.
Included in this episode: drilling a turbo oil drain hole in the oil pan, TIG welding a
-10 AN flare to the pan, scraping engine bay undercoating, trying to clean
it with Castrol Super Clean, cleaning the residue with kerosene, finding a
few rust holes, cutting out a rusted area of the transmission tunnel,
fabricating a patch panel, welding it in place, grinding the welds.
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.
Part 36: Fuel System and Fuel Lines - My 76 Mazda RX-5 Cosmo Restoration
With any rotary, a robust fuel system is a critical component in
reliability. This is what will be covered in part 36 of my '76 Mazda Cosmo
restoration. In this episode I set up the engine bay section of the fuel
system. This includes the regulator, fuel Y block, and all the fuel hoses
using braided line and AN fittings. I also bend up a set of stainless fuel
lines for underneath the car. The fuel tank also needed some attention so I
begin the process of getting it cleaned out and ready for modification to
handle an in-tank EFI pump.
Evinrude 300XP -91
After a few hours in the workshop..
The expansion chambers are "home made" by hydroforming. The original Exhaust is milled away and the engine
block is filled whit plastic.
This engine will get electronic fuel injection and will not be used in a
Note: This is a sponsored video for Forge Apollo