3rd gen Engine/Drivetrain Engine/Drivetrain Modification Discussions for 1999-2003 Models Only (BJ chassis)

Mazdaspeed LSD

Old Apr 6, 2003 | 07:35 PM
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Mazdaspeed LSD

Does anyone have the Mazdaspeed limited slip&drive shafts?
Anyone know how much they are and where to find them?
How hard are they to install?
Old Apr 6, 2003 | 09:21 PM
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I don't have the LSD and axles (wish I did ) but I can address the other questions.

1) If my memory is correct, dealer net cost on the parts is ~$400 for the LSD and ~$240 each for the axles; retail is usually about 40% higher.

2) Installing the axles is an easy ~2 hour job, but installing the LSD requires removing the tranny and disassembling it. Removing a tranny can be done by most shadetree mechanics, but tearing down the tranny and installing the LSD requires special tools and a good deal of skill; if you've never done it before, you should probably leave it to a professional.

Hope this helps!
Old Apr 6, 2003 | 09:35 PM
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For the cost, it's not worth it man...
Old Apr 6, 2003 | 09:36 PM
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around a year ago, super street explained how to install an LSD in a nissan 240, it was step by step with pics, if u could find that it might help
Old Apr 6, 2003 | 10:51 PM
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Originally posted by reefruner5
around a year ago, super street explained how to install an LSD in a nissan 240, it was step by step with pics, if u could find that it might help
It's not worth it man...
Old Apr 6, 2003 | 11:07 PM
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FWD != RWD

Originally posted by reefruner5
around a year ago, super street explained how to install an LSD in a nissan 240, it was step by step with pics, if u could find that it might help
Old Apr 7, 2003 | 12:23 AM
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Originally posted by TheMAN
FWD != RWD

i apologize, just trying to help a brother out
Old Apr 7, 2003 | 01:03 AM
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Originally posted by Maxx Mazda
For the cost, it's not worth it man...
I don't know if this is the most cost productive LSD available for 3rd gens, but for anyone that plans on increasing the power of their Protege it is more than worth it....
Old Apr 7, 2003 | 01:05 AM
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why do you say it isn't worth it?
I would assume a LSD is one of the most effective handling parts you can put on your car
Old Apr 7, 2003 | 01:05 AM
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Originally posted by reefruner5


i apologize, just trying to help a brother out
SCC did a write up a while ago on installing a Phantom Grip device on a stock differential in a Focus. This one related more to our cars (being they are FWD too), but in any case it is far from simple...
Old Apr 7, 2003 | 01:08 AM
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Originally posted by carguycw
I don't have the LSD and axles (wish I did ) but I can address the other questions.

1) If my memory is correct, dealer net cost on the parts is ~$400 for the LSD and ~$240 each for the axles; retail is usually about 40% higher.

2) Installing the axles is an easy ~2 hour job, but installing the LSD requires removing the tranny and disassembling it. Removing a tranny can be done by most shadetree mechanics, but tearing down the tranny and installing the LSD requires special tools and a good deal of skill; if you've never done it before, you should probably leave it to a professional.

Hope this helps!
Chris, do you know if the splined CV inputs are the same as a stock 2.0L 3rd gen? Meaning is it just the axle portion that is thicker or the ends of the CV joints as well? If you are required to use the axles with the LSD, you probably have to upgrade the front steering knuckles too, to compensate the thicker splined end that slides through the knuckle...
Old Apr 7, 2003 | 08:16 AM
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Originally posted by Installshield
Chris, do you know if the splined CV inputs are the same as a stock 2.0L 3rd gen? Meaning is it just the axle portion that is thicker or the ends of the CV joints as well? If you are required to use the axles with the LSD, you probably have to upgrade the front steering knuckles too, to compensate the thicker splined end that slides through the knuckle...
Someone with full access to the 2003 parts catalog will have to answer this one. Edwin?
Old Apr 7, 2003 | 08:19 AM
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Originally posted by Z me Pro
why do you say it isn't worth it?
I would assume a LSD is one of the most effective handling parts you can put on your car
Ditto. Our cars can spin the inside front tire in tight corners WAAAY too easily. Also, although the installation will be a bear (it's almost always difficult on an FWD car) the cost of the MSP LSD is *very* reasonable compared to the cost of a similar aftermarket LSD for most other vehicles.
Old Apr 7, 2003 | 09:07 AM
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According to the Mazdaformance people they state that the spline count on both the MSP and regular Protege are the same. i.e. You don't have to purchase the axles.

There's someone on the other board that is having the dealer install his Mazdaspeed LSD, and it seems that there are all kinds of complications (had to be sent to mazdaspeed on oregon and what not).

I've noticed that my wheel spin has been drastically reduced ever since I got new tires. The stock tires really suck.
Old Apr 7, 2003 | 10:35 AM
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Originally posted by Arkos
There's someone on the other board that is having the dealer install his Mazdaspeed LSD, and it seems that there are all kinds of complications (had to be sent to mazdaspeed on oregon and what not).
What sort of complications? I am under the impression that the MSP's tranny is internally identical to the regular 2.0L tranny other than the LSD. If this is the case, I can't imagine that installing the LSD would be a big problem unless nobody at the dealer in question knows how to rebuild a G15 tranny... which is a distinct possibility.

Originally posted by Arkos
I've noticed that my wheel spin has been drastically reduced ever since I got new tires. The stock tires really suck.
Very true, but Jason Minehart's HS autocross car can spin the inside front fairly easily on 225/45R15 Hoosier race tires. Tires don't come any stickier than this. Our cars NEED a limited slip real, real bad.

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