Are there any performance clutches for the Protegé?
What are the advantages of a lightened flywheel?
Are there any short shifters for the Protegé?
Ok, I want to get a limited-slip differential, are there
any for the FWD Protegé?
Can I convert a U.S.-market 90-91 4WD Protegé into a
J-spec GT-X Turbo “clone”?
What if I want a limited-slip differential for my GT-X?
Is the rear differential on the 4WD Protegé the same as
What kind of drivetrain upgrades can I
perform and suit my needs?
Is it true that the MP3 has a stiffer clutch pedal
Is the MazdaSpeed Protegé's transmission stronger?
I turbocharged my 3rd generation Protegé and I also want
to beef up the
drivetrain components. What can I do?
Are there any stainless steel braided clutch lines
for the Protegé?
there any performance clutches for the Protegé?
Centerforce, Clutchmasters and Clutchnet have available clutches
Protegé. Tilton also makes a clutch for the 2nd
generation Protegé ES and is
available from Mazda Motorsports. Exedy has also
recently released an organic
sport clutch kit for the 3rd generation 2.0l Protegé's
pressure plate set
load of 700kgf. MazdaSpeed clutches are available for the 4WD 1st generation
generations. The part numbers are:
1st generations 4WD:
QN2B-16-490 clutch set
cover (included in "clutch set", set load is 700kgf)
QN2B-16-460 clutch disc
(230mm metalic 3 puck type, incl'd in "clutch set")
cover (95 1.8l only, discontinued)
QEP5-16-460 clutch disc
(95 1.8l only)
cover (all 1.5l and 96-98 1.8l, discontinued)
9DM5-15-460 clutch disc
(all 1.5l and 96-98 1.8l, discontinued)
has released a 7.4kg chromoly flywheel (part # FS9P-11-500)
G15M-R transmission. It is 1.2kg lighter than
the stock 8.6kg flywheel.
3rd generation 2.0l owners who want easy
engagement, relatively decent tolerance
to performance driving and good daily driveability,
the clutch assembly from the
MazdaSpeed Protegé is also an option.
The part numbers for the MazdaSpeed Protegé's clutch
LF03-16-460 clutch disc
LF02-16-410 pressure plate
G561-16-510B release bearing (also used in FC
A heavy duty performance release bearing from
MazdaSpeed is also available.
It is designed to handle twin plate metallic
clutches and 8000rpm use. It is also
suitable for use with a conventional single plate
clutch. Increased or similar
reliability (to stock) is possible with this
bearing when a high force pressure
plate is used. The part number is QCC5-16-510 and is
compatible with all
BG (1st generations) 4WD models, 95 ES (1.8l), and all
2.0l 3rd generations.
This bearing must be used with the upgraded release
fork the MazdaSpeed
Protegé has on 3rd generations. The transmission case
will also have to be
grinded down for the bearing to fit in the 3rd
The clutch release fork was also beefed up on the
MazdaSpeed Protegé, so
for 3rd generation owners with the 2.0l engine, these
parts are also
KL03-16-520A clutch release fork
F202-16-102A clutch release fork pin
It maybe hard to find a performance clutch kit
"for" the Mazda3 right now,
but the good news is, any pressure plate, and
clutch disc meant for the 2.0l
3rd generation Protegé (G15M-R transmission) will
work with the Mazda3
perfectly fine. The flywheel and pilot bearing
are NOT interchangable how-
ever. MazdaSpeed USA now has a clutch kit and
flywheel for the Mazda3.
The part numbers are:
RAMS-8M-L01 clutch kit
RAMS-8M-L03 flywheel (weight: 6.3kg)
What are the
advantages of a lightened flywheel?
flywheel will naturally reduce the weight of your car. It will
the inertial mass required for the engine to spin. It will
shifts and easier rev matching due to the reduced mass.
shifting is the result of faster RPM drops from the reduced
will result in longer lasting gear synchronizers. Slippage of
will be necessary when starting from a stand-still due to the
Are there any
short shifters for the Protegé?
short throw shifter for the 1st generation Protegé. B&M
makes a short shifter for all FWD Protegé's. If you
own a 3rd generation,
you can also get
the short shifter from the MazdaSpeed Protegé. The MP3
shifter's throw is the same as the stock one, the
shifter height is just shortened
for a sporty look. Use of the MP3's shifter will
require a new shift knob
because of the different thread size. Kartboy
also makes a short throw shifter
for the Protegé and has a slightly longer throw than
the B&M shifter. Kartboy
also make shift rod stabilizer bushings. TWM has a
short shifter that has the
shortest throw in the market. C's makes an
adjustable throw short shifter for
the FWD and 4WD models. Corksport also sells brozoil
shifter bushings that
will fit the B&M, Kartboy, and TWM short
shifters. If you have the
Pacesetter short shifter, the bronzoil bushings
will only fit on the transmission
side of the shift linkage. MazdaSpeed USA also just
released a short shifter
for the Mazda3 (not compatible with 6 speeds). The
part number is
GRMS-8M-L11. ARK and TWM also just released
short shifters for the
Mazda3. Do understand that setting too short of a throw can destroy your gear
synchronizers much faster. Short shifters makes shifting much faster, but at
toll of the gear synchronizers.
softly with some finesse!
Ok, I want to get a
limited-slip differential, are there any for the FWD cars?
are Quaife LSD's available from Mazda Motorsports, they are about
$1200. It is
indeed expensive. They are available for the G-series trans-
the F-series transmissions. The former will fit all FWD 1st
and 2.0 liter 3rd generations. The latter will fit on 2nd gen-
other 3rd generations. MFactory recently released a line of
gear LSDs that are much cheaper than the Quaife
LSDs. There are
LSDs for both the early G-series transmissions
and the later ones, which means
their LSDs are the cheapest solution for 1st
generations! An even cheaper
solution is to get the Tochigi Fuji Sangyo 2 way LSD
from the MazdaSpeed
Protegé. The piece runs for a little over $600 and
is a great deal. It is a direct
swap to the G15M-R, 95 ES's G25M-R, G35M-R, and
G66M-R that uses a 4.105
final drive ratio. The part number is GS01-27-190A.
The LSD is not machined to
accommodate the speedometer gear. Use of the
speedometer gear is not required
for ABS models (3rd generations/BJ models and Mazda3's
only). Installation of the
speedometer gear requires the differential to be
machined or the plastic speed-
ometer gear to be grinded down on the inside for
the differential to accept it. Either
method works, however machining the differential is
recommended as it will not
weaken the speedometer gear. A 2nd revised LSD has
been released to replace the
original design (and in doing so, the original type is
no longer available) due to a
number of failures in the differential's carrier
housing. Before this was released,
some people resorted to reinforcing the
differential by welding the carrier housing
to the ring gear. It may still be advisable for
higher powered applications for a
peace of mind.
The part number is GSY1-27-190.
Alternatively, 1st, and 2nd generation owners can
try to source the viscous LSD
that was optional in Japan. The Infini Familia
came standard with the viscous LSD.
For the G5M-R and 91-94 (BG) G25M-R:
G040-27-190 (4.105 ratio, 26 splines)
For the G25M-R: G565-27-190A (4.105
ring gear ratio, 28 splines)
For all F25M-R (I doubt it will fit an
F5M-R, you're on your own if you do!):
4.105 ring gear ratio: F046-27-190B
4.388 ring gear ratio: F045-27-190B
The F25M-R viscous LSD will also work
with 3rd generations.
MazdaSpeed also used to have 1.5
way LSDs for the G25M-R and F25M-R
The part numbers are:
9B1A-79-960 G25M-R 1.5 way
9B2A-79-960 F25M-R 1.5 way
NOTE: straight forward "bolt on"
installation can ONLY be done if you DO NOT
change the final drive ratio of your
transaxle. If you choose to change the final drive
ratio, you MUST change the pinion gear that is
pressed onto the counter shaft of
the transaxle. The appropriate pinion gear can
be sourced from another F25M-R
that has the final drive ratio you want. In
Mazda transaxles, the pinion gear is
machined into the counter shaft, therefore all
counter gears must be pressed out
and pressed into the replacement shaft.
For the counter shaft that has the:
4.105 ring gear: F5D3-17-301
4.388 ring gear: F5D4-17-301
convert a U.S.-market 90-91 4WD Protegé into a J-spec GT-X Turbo
Supposedly it is possible, but almost nobody has done
it outside of professional rally
circles. The U.S./Canadian 4WD model has the correct
rear floorpan to clear the
required AWD hardware; however, the fragile 4WD
drivetrain used in these cars
shares only the gearset and gearbox of the stronger
GT-X drivetrain. A 180+ hp
turbo engine should NEVER be installed in a
US/Canadian 4WD car with the wimpy
stock drivetrain it will probably break in a matter of
minutes! An 4WD drivetrain
will not fit into a FWD Protegé without serious custom
modifications to the car’s
frame and floor to clear the driveshaft and rear
In order to build a reliable GT-X clone, you will not
only need to obviously swap
the engine to the BP-ZET, but you will also have
to use the GT-X's transmission.
Most of the time, importers import the BP-ZET
without the transmission because
it is unwanted by everyone in North America,
however you might be able to cut a
good deal in getting that because of such! Just
make sure you request you want the
transmission when you order your engine. Frank
Schmitt has done a GT-X
conversion on his 1990 4WD Protegé. You can check out
the info about his car
and the swap at: http://protege4wd.vista.com/
if I want a limited-slip differential for my GT-X/4WD?
The 323/Familia GT-X and later JDM only 4WD
models (BHAs and BJs) came
with a viscous coupling LSD for the center
differential, but not for the rear
differential. The GT-R and GT-Ae also has this
setup in addition to a viscous
coupling rear LSD. The LSD equiped rear
differential only came on the 323/Familia
GT-R and GT-Ae from the factory. Finding a used GT-R
rear differential will be
near impossible, however the parts needed to correctly
make a GT-R rear different-
ial is available from 90-93 LSD equiped Miata.
Keep in mind that not all of the
90-93 Miatas came with LSDs, so look around at
the junk yard! If you choose not
to have the viscous LSD (which may prove inadequate)
and use the stronger after-
market LSDs, you can skip the junkyard trip if
you want. However, you will still
need the differential's output shafts which will
set you back about $200 retail from
the dealer. Regardless of what you choose to do, you
will have to rebuild the
differential unless you are very lucky to get a GT-R
one from a Japanese junk
yard! All the other parts such as the axles bolt
on to the LSD housing (meaning the
GT-X and GT-R axles are the same). For those few
lucky ones out there with a
4WD BHA or BJ model, all of this information also
applies. In fact, the entire rear
differential housing from a GT-R will bolt in! So
in otherwords, installation of a
rear LSD on a 4WD Sport20 will increase corning
ability to what the GT-R had
made a legend of!
As reference, here are the factory part numbers
needed for the conversion:
differential output shaft
T015-27-280A, left differential
T016-27-200C, viscous LSD
(don't need this if installing aftermarket LSD)
MazdaSpeed also sells clutch type LSDs (you will
need the open diff output shafts):
QN1A-79-960, 1.5 way LSD
(rebuildable with kit part #: QEN1-79-960)
QN10-64-A00, 2 way LSD
(rebuildable with kit part #: QEN1-79-960)
T005-27-270B, left & right
open differential output shaft (needs 2)
Kaaz and Cusco also make LSDs specific to the
Miata and Familia GT-R
MazdaSpeed used to sell a helical front LSD and
an upgraded viscous center LSD
also (they are no longer available):
9N4B-27-200, front LSD
9N4B-27-580, viscous center LSD
If you are one of the lucky ones to have a 4WD
Axela, the rear LSD from a
MS02-27-200A, rear LSD
Is the rear differential on the 4WD Protegé the same as the GT-X?
Yes, they are exactly the same.
What kind of drivetrain upgrades
can I perform and suit my needs?
There are certain
things you can do to upgrade your drivetrain system. How-
advanced upgrades will have to be done custom by a reputable
There various different upgrades possible to suit different
Again, our Nissan friends have a nice detailed technical
on various drivetrain upgrades. Do note some of the things in
do not apply to our Protegés. Our Protegés feature a hydraulic
system, whereas the Sentras have a cable system. Do note Jim Wolf
and Stillen do not make parts for Protegés because they are Nissan
the most part, most the information provided are universal for
all cars and
is actually useful to us. You can find the detailed drivetrain
Is it true that the MP3 has a stiffer
clutch pedal (pressure plate)?
No, all the
transmission components used in the MP3 are the same as the one
used in the
normal 2.0 liter (LX/ES) sedan.
MazdaSpeed Protegé's transmission stronger?
No, the transmission's internals are the same as
the normal Protegé's, except
for the LSD.
I turbocharged my 3rd
generation Protegé and I also want to beef up the
drivetrain components. What can I do?
You can start by upgrading the differential to a
limited-slip type. You can then
upgrade the axles to 24mm diameter ones from the
The part number for the axles are:
GA33-25-50XA right axle
GD49-25-60XA left axle
there any stainless steel braided clutch lines for the Protegé?
As of this time, there are no known premade
clutch line kits for the 1st and 2nd
generation Protegé's (which share the same
factory clutch line as the MX-3).
AutoExe sells a clutch line kit for the 3rd
generation 2.0l Protegé's. RR Racing
and Corksport also sells a clutch line kit for
the MX-6/Probe (which share the
same factory clutch line as the 2.0l Protegé's).
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