LSD Longevity?

[tschanrm]

I'm learning the basics about the Mazda Speed LSD, and debating whether or not to put it into my 03' P5. I know that the MS LSD is a conical ring torque sensing type, but how long, mileage-wise, will it be effective?

[GreySpeed]

To be honest, these things go at the most random times, it is hard to say exactly how long it will last.

http://www.msprotege.com/forum/showthread.php?t=64821&highlight=lsd

[MrDiggler]

Umm, yeah. How lucky do you feel? Weld it first. My original snapped at 10% throttle in first gear and 32k miles.

[Drumfreak]

I have 45k on my untouched stock LSD and I'm running 9 psi but I very rarely give it any juice in first gear and it's still intact. I'm always driving nervous just waiting. I'm hopefully getting it welded soon.

[tschanrm]

I've read all about the random LSD breakage, my question is, high HP applications aside, how long should a conical ring torque sensing type LSD last? I know a viscous type LSD wears out faster than clutch type. Is the Mazda LSD a torsen type, or a type that should effectively last over 100k with typical driving?

[ChopstickHero]

I have 45k on my untouched stock LSD and I'm running 9 psi but I very rarely give it any juice in first gear and it's still intact. I'm always driving nervous just waiting. I'm hopefully getting it welded soon.

that's what i did too. never really punched it in first gear. and then i made a left hand turn in 2nd gear and it went. boo. it really doesn't matter what you do. it'll go one day.

[MrDiggler]

I've read all about the random LSD breakage, my question is, high HP applications aside, how long should a conical ring torque sensing type LSD last? I know a viscous type LSD wears out faster than clutch type. Is the Mazda LSD a torsen type, or a type that should effectively last over 100k with typical driving?

Ahh, gotcha now. That's a good question. I know the cone type LSD in my '79 T/A only needs about 20 lb/ft to break it loose after about 70k miles (and some fairly hard use with engines making 500-600 lb/ft of torque.) That would indicate it's well over half gone and not terribly effective now. Not exactly a comparison for you, but just for whatever that's worth. I've always heard the cone type had a limited lifespan as well.

[orng1]

if the welds don't break it should last a lonngggg time. But as you c an probably see from the LSD registry they last between 30-40k miles. I'd proably get a welded one if I had to do it again.

[hoindawall]

I've read all about the random LSD breakage, my question is, high HP applications aside, how long should a conical ring torque sensing type LSD last? I know a viscous type LSD wears out faster than clutch type. Is the Mazda LSD a torsen type, or a type that should effectively last over 100k with typical driving?

depends which version you get. the newest ones i believe are torsen types

[fr0st]

depends which version you get. the newest ones i believe are torsen types


i do i know which version i get? the car is now at 61000km ( aprox 40K miles) and is a 2003.5

[fr0st]

I've read all about the random LSD breakage, my question is, high HP applications aside, how long should a conical ring torque sensing type LSD last? I know a viscous type LSD wears out faster than clutch type. Is the Mazda LSD a torsen type, or a type that should effectively last over 100k with typical driving?


this may sound funny.. but if ya use a msp in tipical normal driving, which none here do, you wouldn't need a LSD... so if yours breaks, put in a P5 tranny with no LSD for 200$ :)