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.
Mazda RX-7 FC3S 13B-RE Bridgeport Idle FC3S drag specs
Mazda RX7 FC3S Rotary 13B-RE Bridgeport , 2mm Apex seal , 4pcs Stud dowel
12.7mm , Borg Warner S400 80mm 1.32AR , Devided Exhaust manifold 22" with Twin Tial 44mm
Wastegate , 4" straight pipe Exhaust ,
Haltech E6K 1600CC X 4 , Spearco Water to Air Intercooler -16 hose with water cooler
tank , Twin Tial Blow off valve , V Mount Aluminum Radiator ( Mit Evo3 ) ,
Dual Walbro Fuel pump -6 with return Fuel cooler , -6 + -6 to AN-8 Fuel
Line , HKS 5 Speed Dog transmission , OS Giken Twin plate clutch , Msd
Igntion 6A X 3pcs , HKS EVC Boost
controller , D2 Racing Drag spec suspension. Stock IRS with weld on solid
rear differential. Idle 13.5~14.0 AFR on 1700~1800 rpm pump fuel RON97
logged with Innovate LM-1. Innovate TC-4 Thermo couple probe EGT on
Manifold 8" from engine Flange.
Controlling HE351VE with a spring
I have a spring holding the vanes closed to a set position then drive
pressure directly acts on the vanes, which forces the vanes open. Its
simple and works.
I have about $150 in this turbo setup.
1650 HP RX7, "The Sleeper Part 2", Scary and Funny, from NRE.
Nelson Racing Engines 1650 HP RX7 road video of this crazy sleeper.
Awesome power in this tiny car. This car is really scarry and very fast.
Some very funny video. I laughed a lot. More information and downloadable
videos for your IPOD and PS3 can be found at at
http://nelsonracingengines.com. and http://nelsonsupercars.com.
Nitrous LSx Mazda RX-7 vs E85 Big Turbo EVO on slicks!
EVO HAD CLUTCH ISSUES REMATCH COMING SOON!!
OutOfOrder EVO vs DNR Performance LSx RX-7
Shoutout to 3HeadedElephantS for the GoPro Footage! Checkout his channel
and subscribe, also watch his badass edit of this same race here: