12a Vs. 13bt Should I Turbo Swap Comparison FB SA22C Mazda RX-7
Ever considered doing a TII swap into your SA or FB chassis? Here's a video
that I shot and edited myself comparing an original 12a engine to the 13bt
engine I swapped it out with.
It's a drastic difference and well worth the time, effort and money that
the swap requires. To get to the point to shoot this video took me about 5
months from purchasing a running S4 TI FC to start to finishing the engine
swap into the car where I could drive it safely.
Clarification - The quarter mile race isn't really a quarter mile. It's
about 1.9mi and the start is a downward hill. So no, I don't think the 13bt
engine can run a quarter in the low 13's as it is. I believe it will be
closer to the mid to low 14's as it is right now.
If you're looking for more info on the swap, I got 99% of mine from
RX7Club.com and I'm still an active member trying to help others. You can
find me and my build thread there for more detailed info on the swap.
Music - Gasoline by Audioslave, I don't hold the rights to the song's
audio, just the free right to use it in the video.
Video and audio - I shot using a GoPro HD Hero 2 camera with a WiFi bacpac
and open case for audio. Head mount was used for the 12a footage because I
couldn't find the suction mount, which I eventually found and used for the
Editing - I used Adobe Premiere Pro for all of the editing of the footage.
The Zero F**ks Given RX7 - /TUNED
Would you drive a car built by a teenager in his parents driveway with no
safety features whatsoever? We did, and now we'll tell you why this ugly
RX7 is so brilliant.
Mazda Rx7 FB - ITBs & Megasquirt
Here's a couple of clips of my 1984 Mazda Rx7 with a 12a engine. I've
recently installed a pair of Suzuki TL1000r throttle bodies running on
Megasquirt Ms2 Extra. As you can see I need an LSD next....
1985 Mazda Savanna Rx-7 Rotary 1 Owner 37K Orig Mi Rx7 Series 3 GSL SE NA S3
Mazda Rx7 GSL-SE Rotary 12V car. Nathan Wratislaw AKA 1 Owner Car Guy and
These are Very Fun cars to drive & this is the Nicest one I have ever
Driven it is a 1 Owner car and only has 37k Original Miles. Make sure and
check out My channel I have Lot's of nice. 1 & 2 Owner Cars Trucks and
SUV's and i sell them cheap I have over 750 Cars Trucks and SUV's on My
Channel Make sure and Subscribe
also make sure and ADD Me on Facebook
The Series 3 (1984--1985) featured an updated lower front fascia. North
American models received a different instrument cluster (the NA S3 RX-7 is
the only rotary-engined car to not have a centrally mounted tachometer).
GSL package was continued into this series, but Mazda introduced the GSL-SE
sub-model. The GSL-SE had a fuel-injected 1.3 L 13B RE-EGI engine producing
135 hp (101 kW) and 135 lb·ft (183 N·m). GSL-SEs had much the same
options as the GSL (clutch-type rear LSD and rear disc brakes), but the
brake rotors were larger, allowing Mazda to use the more common lug nuts
(versus bolts), and a new bolt pattern of 4x114.3 (4x4.5"). Also, they had
upgraded suspension with stiffer springs and shocks. The external oil
cooler was reintroduced, after being dropped in the 1983 model-year for the
controversial "beehive" water-oil heat exchanger.
The 1984 RX-7 GSL has an estimated 29 highway miles per gallon (8.11 litres
per 100 km) /19 estimated city miles per gallon (12.37 l/100 km). According
to Mazda, its rotary engine, licensed by NSU-Wankel allowed the RX-7 GSL to
accelerate from 0 to 50 (80 km/h) in 6.3 seconds. Kelley Blue Book, in its
January--February 1984 issue, noted that a 1981 RX-7 GSL retained 93.4% of
its original sticker price.
1985 - Mazda released in Australia the RX7 Finale - this was the last of
the series and brought out in limited numbers. The Finale featured power
options and a brass plaque mentioning the number the car was as well as
"Last of a legend" on the plaque. The finale had special stickers and a
blacked out section between the window & rear hatch.
The handling and acceleration of the car were noted to be of a high caliber
for its day. This generation RX-7 had "live axle" 4-link rear suspension
with Watt's linkage, a 50/50 weight ratio, and weighed under 2500 lb (1100
kg). It was the lightest generation of RX-7 ever produced. 12A-powered
models accelerated from 0--60 mph in 9.2 s, and turned 0.779g (7.64 m/s²)
laterally on a skidpad. The 12A engine produced 100 hp (75 kW) at 6000 rpm,
allowing the car to reach speeds of over 120 miles per hour (190 km/h).
Because of the smoothness inherent in the Wankel rotary engine, little
vibration or harshness was experienced at high rpm, so a buzzer was fitted
to the tachometer to warn the driver when the 7000 rpm redline was
The 12A engine has a long thin shaped combustion chamber, having a large
surface area in relation to its volume. Therefore, combustion is cool,
giving few oxides of nitrogen. However, the combustion is also incomplete,
so there are large amounts of partly burned hydrocarbons and carbon
monoxide. The Exhaust is hot enough
for combustion of these to continue into the Exhaust. An engine driven pump supplies air into
the Exhaust to complete the burn of
these chemicals. This is done in the "thermal reactor" chamber where the Exhaust manifold would normally be on a
conventional engine. Under certain conditions the pump injects air into the
thermal reactor and at other times air is pumped through injectors into the
Exhaust ports. This fresh air is
needed for more efficient and cleaner burning of the air/fuel mixture.
Options and models varied from country to country. The gauge layout and
interior styling in the Series 3 was only changed for North American
versions. Additionally, North America was the only market to have offered
the first generation RX-7 with the fuel-injected 13B, model GSL-SE. A turbocharged (but non-intercooled) 12A
engine was available for the top-end model of Series 3 in Japan.
Sales were strong, with a total of 474,565 first generation cars produced;
377,878 were sold in the United States alone. In 2004, Sports Car
International named this car #7 on its list of Top Sports Cars of the
1970s. In 1983, the RX-7 would appear on Car and Driver magazine's Ten Best
list for the first time in 20 years
I created this video with the YouTube Video Editor
1993 Mazda RX-7 Review
Read the full review here:
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AutoGuide reviews the latest new cars with test drives, car comparisons and
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Modified FB RX-7 12A Weber/Exhaust
1984 Mazda RX-7 GSL 12A rotary engine. Weber 40IDF carb and intake
manifold, K&N Filter, Pacesetter header, dual straight pipes back to Monza
Muffler, Holly Red fuel pump and FPR, 3/8th fuel lines,NGK plugs and wires.
The air dam is a Xenon fibreglass piece.
Fb rx7 bridge port lowered
Rx7 me and my gf built 13x8 wheels lowered with a 12a bridge port and
racing beat muffler. This car has a turbo II swap now heres a link
http://youtu.be/Aw6q_M44VuM and http://youtu.be/O1-czR12n0A
My 1980 series 1 rx7 stock 12a with new full racing beat street port exhaust!
I got my new Exhaust on! Sounds
quiet... But it's ok runs great! She really opened up at about 4500 rpm.
Thank you racing beat again! If you call them talk to mike he is the man!
It's been 7 years comein! If you like this please thumbs up it! Thanks to
jdoublenaz I have a low like value cause someone forgot to change his
tampon and got his Honda pants got messy!
Mazda RX-7 Spirit R: The Glory Days of Japanese Sports Cars - Ignition Episode 31
On this episode of Ignition, Carlos Lago convinces Mazda to hand him the
keys to the only left-hand drive RX-7 Spirit R in the world. After a quick
look underneath the car, Carlos hits the winding road to explore the
involving driving experience and rotary engine that made the Mazda RX-7 so
unique, as well as its connection to the new generation of lightweight,
rear-wheel drive coupes like the Subaru BRZ and Scion FR-S.
Ignition appears every Monday on the Motor Trend youtube channel.
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