I think my MSP has a OPEN DIFF!!

[hotrodf1]

I thought our cars had Limited Slip DIffs installed factory.

Then why in the hell can I spin one tire (while on jackstands) and the other just sets there???

Shouldn't they be "locked" together with the plates and clutches in the LSD?

Normally with the limited slips that I've seen, if you spin one tire by hand, the other goes the same direction.

I have been noticing that my car "spins" very easily, and was thinking that it acted like a one wheel peel.

What's going on here? I just bought the car, it has 73K miles on it. Is it possible a dealer put an open diff in this car at one time?

 

[fr0st]

hmm well on mine, while the car is lifted, if i spin a front wheel by hand, the other doesn't move..

i do feel grip from both wheel when lanching though..

it is possible the tranny was ****** and the dealer put a P5 tranny in.. it's the same tranny exept for the lsd.

 

[miss_steele_msp]

I thought our cars had Limited Slip DIffs installed factory.

Then why in the hell can I spin one tire (while on jackstands) and the other just sets there???

Shouldn't they be "locked" together with the plates and clutches in the LSD?

Normally with the limited slips that I've seen, if you spin one tire by hand, the other goes the same direction.

I have been noticing that my car "spins" very easily, and was thinking that it acted like a one wheel peel.

What's going on here? I just bought the car, it has 73K miles on it. Is it possible a dealer put an open diff in this car at one time?

they say mazda started replacing the diffs with open diffs because the problems they had with them breaking. Did you purchase the car like that?

 

[FF Racer]

The LSD from what I know works when it senses tork... So it's perfectly normal that if you turn one on jackstands that the other one wont turn.

 

[hotrodf1]

they say mazda started replacing the diffs with open diffs because the problems they had with them breaking. Did you purchase the car like that?

yeah, just got it about 2 or 3 weeks ago I guess.

 

[Alejo_NIN]

in think this test is stupid
only way to see if you aren't doing one wheel burn outs is to actually do a burn out and check that both tires left a black mark

when i had open diff only one side, usually driver side since the axle is shorter, would leave a mark. after the welded LSD install, now both tires leave a mark....weepee!

hope it helps

 

[hotrodf1]

The LSD from what I know works when it senses tork... So it's perfectly normal that if you turn one on jackstands that the other one wont turn.

I was talking with a buddy and he said that this LSD probably would not have the springs in it that I'm used to (like in the fabled Ford 9").

So how would I go about doing a (non-destructive) test to determine if I even have the LSD??

EDIT: he he. you beat me.

 

[Kansei]

just do the burnout. you don't have to "destroy" much of your tire tread

 

[hotrodf1]

just do the burnout. you don't have to "destroy" much of your tire tread

I don't want to have a LSD blowout. But surely it will take some punishment. woohoo. burnout for me.

I would feel better if I had the rear mount inserts, but at least now I have the SLS front mount.

 

[Alejo_NIN]

do a burn out on a wet surface
it will still do a one wheel burn out if you have open diff

 

[zumzumzoom03]

do a burn out on a wet surface
it will still do a one wheel burn out if you have open diff

Have you ever pulled out in rain and broke a tire loss and sat there spinning... than you have an open diff. I had an '02 ES Protege w/open diff and that thing always broke tires loose. It sucked Now I have an '03 MSP and haven't experience it yet. Also in the snow I was going up a hill one tire in snow one on dry and the car pulled right up it.

 

[ChopstickHero]

you don't have to do a "destructive" burn out.... from a rolling start, go full throttle in 1st or 2nd gear. if you have alot of torque steer, then congrats, you LSD is working.

 

[fr0st]

a non destructive way would be to do a burnout on an even surface, with one wheel on a lawn ands the toher on asphalt.. that way, if you DO have a conventionnal diff, the wheel on the lawn or mud /whatever will spin and not both..

on a pick up truck without a lsd it does that.

 

[hotrodf1]

you don't have to do a "destructive" burn out.... from a rolling start, go full throttle in 1st or 2nd gear. if you have alot of torque steer, then congrats, you LSD is working.

Well I do have plenty of torque steer. I thought the LSD was supposed to help eliminate that??!?!

 

[hotrodf1]

a non destructive way would be to do a burnout on an even surface, with one wheel on a lawn ands the toher on asphalt.. that way, if you DO have a conventionnal diff, the wheel on the lawn or mud /whatever will spin and not both..

on a pick up truck without a lsd it does that.

good idea - i'll go see my neighbor tonight. (naughty)
he won't mind. . . much

 

[ChopstickHero]

Well I do have plenty of torque steer. I thought the LSD was supposed to help eliminate that??!?!

lol... it is! but i find that a car without an LSD will torque steer differently. it seems like the power is only going to one axle most of the time. in the MSP, the torque steer kind of wanders between both wheels as they find some traction. if you can feel this "wandering", then your LSD is trying to compensate by distributing power evenly.

You can also feel the LSD in a turn too. if you feel it helping you accelerate out of a turn.

 

[shane02pro5]

Wait stop! I have an open differential in my P5-T. If I am jacked up and spin one wheel the other wheel spins the opposite way. I can leave nice black burnout marks with both tires so I'm lost. In the rain one wheel breaks loose and I'm only spinning my drivers side.

Torque steer is the biggest sign of an LSD. Left side loses traction and power transfers to the right side usually back and forth pulling back and forth from left to right.

 

[16902]

Well I do have plenty of torque steer. I thought the LSD was supposed to help eliminate that??!?!

I used to think the same thing but when I replaced the open diff in my P5 with an MSP diff, the damn thing would nearly torque steer me into the curb.

 

[noclue119]

just go around a turn and floor it. Your inside tires should not spin.

 

[hotrodf1]

just go around a turn and floor it. Your inside tires should not spin.

ooh. I like this idea, too.

Hmm.. Now it's between the lawn burnout and a hairy WOT hairpin turn!

And it looks like its all gonna happen in a thunderstorm! Which will add to experience I'm sure (cabpatch)