MFactory LSD review

tigermack

Member
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05' Mazda3 / 03' Duramax / 91' MR2T
It has been quite sometime now since I had my MFactory LSD installed. Some of you have messaged me privately asking for a review or feedback.

More info can be found here. We use the 28 spline G series but MFactory designed the diff to work with both.

http://www.teammfactory.com/helical-lsd

The install was straight forward for this LSD, I did it along with my clutch and flywheel. From what Ive read, this LSD does not need any trimming or modification to fit into our transmission. DO NOT quote me on that as it worked completely fine for me. I just had to remove a few gears.

Link to the install... http://www.mazdas247.com/forum/show...e-Install-Tranny-and-LSD-or-disassemble-gears

It is a 1 way LSD so it doesnt lock up like lets say a KAAZ LSD (1.5 way) which is also 50% more in price and more maintenance with the clutch packs. IIRC, the LSD weights just as much with the open diff, that means there are no weight disadvantages or what not. The LSD worked well for me, it eliminates wheel spin on WOT that I used to get a lot, it helped me put down power a lot better and faster. The diff also help pull the car out of corners, not as well as a clutch diff, but a lot better than an open diff. The good part about the gear diff vs. a 1.5 or 2 way clutch diff is that you can still get the same lift off oversteer as before since it acts as an open when you lift off the gas. On the otherhand, the 1.5 way keep the front wheels partially locked even during deceleration, and that makes it harder to get the car to rotate off throttle. (I have driven a car with a 1.5 way clutch LSD) However, I do get wheel spin under suspension load or when one tire starts to get light. When I want to get on the throttle earlier, thats when the wheel spin comes. It might have to do with the setup I have, the bigger MS3 stock front bar. I will come back to that later on. Overall, I am happy with the performance, it definitely helped me get faster times because I can get on the power a lot harder and earlier. It did not affect the way the car drove like a clutch type LSD would do.

FYI, I can help set up a GB on this.

OPEN DIFF

Mack SFR SCCA 2010 Rd 1

MFactory LSD with bumps and all... lifting up wheels left and right.

SFR SCCA Slush #1 2010, Great America, FSP #188

Some pics that were posted before in my thread.

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Open diff out

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Stock vs MFactory

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Very COOL, Mack!!
I didn't know such a diff existed. And though still a fair chunk of change, $650 is a lot easier to take than the $1500-$1600 LSDs I have seen in the past.

One thing I don't understand about your post though: Spline count? Does the N/A 3 use the 26 or 28 spline unit and why?

Also, what clutch/flywheel combo are you running now?

 
I am running a Exedy stage 2 clutch and a Fidanza flywheel. It's the lightest one for the NA MZ3.

We have 28 splines but their design made it work with both. We were confused when we first got it then MFactory told us that they did it so it'd work for both 26/28 splines. (let me try to find a pic of that and post it up)

Oh, one more thing I'd like to add, O.S. Giken is designing or testing their LSD in Japan on a MZ6, which is also a G series transmission so it'd work for our car. Just not sure when it's gonna hit the market, I might be jumping ship later on for more bite/pull through corners.
 
i've been running the MFactory LSD in my car as well. i still am running the prototype (Mazda 6) in my car and have a spare, lol. very good quality part. i havent broken it yet. so thats always a good thing.

good write up OP
 

That's very cool!! But I would be worried about those 5 little dabs of weld holding the center section together w/the hub, especially racing the car as we all know you do.
Isn't that was usually the complaint about the cone type LSD in the MSP?
That may be OK for most mild street applications (like mine might be,) but doing what you're doing, I would hope you had it more solidly welded up?

 
So, I hope that no news here is good news. Any new updates to report on the M Factory LSD? I'm looking at getting one, so I am trolling for feedback.
 
So, I hope that no news here is good news. Any new updates to report on the M Factory LSD? I'm looking at getting one, so I am trolling for feedback.


I know its a totally different car. But figured id post my experience. Mfactory lsd in my car. Been beating the s*** out of it since august of last year (09) and its still holding up
 
I know its a totally different car. But figured id post my experience. Mfactory lsd in my car. Been beating the s*** out of it since august of last year (09) and its still holding up

I believe we have the same series tranny so it's the same.

So, I hope that no news here is good news. Any new updates to report on the M Factory LSD? I'm looking at getting one, so I am trolling for feedback.

Still no problems here. I just upgraded my suspension, along with stiffer spring rates. Going to see how it goes when the front lifts less under harder cornering.
 
I believe we have the same series tranny so it's the same.



Still no problems here. I just upgraded my suspension, along with stiffer spring rates. Going to see how it goes when the front lifts less under harder cornering.

nah, different tranny
 
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