Miata LSD

[FazdaBoy4ever]

lol!

[therieldeal]

from what ive been told the only way to get the silicone fluid out would be to drill a hole. ive also heard that it is the consistency of silly putty so it wont exactly drain, either. i have a used miata vlsd that i'm going to drop in there at some point.

sarge if you're looking for one, i believe FTjandra has one lying around that he doesnt plan to use. you also need the vlsd stub axles, i'm not sure if he has those (they are different)

[SgtRauksauff]

groovy!

--sarge

[ryan1]

people you have the miata diff, how do you like it?
also if the diff is still together can i just unbolt mine and put the
miata diff in? or do i have to take the diff apart and swap stuff?
also do you need anything else for the miata lsd swap or just the diff?

[Clean 4WD]

people you have the miata diff, how do you like it?
also if the diff is still together can i just unbolt mine and put the
miata diff in? or do i have to take the diff apart and swap stuff?
also do you need anything else for the miata lsd swap or just the diff?

You will need to take it apart, and swap the LSD carrier from the miata to the pro 4wd diff, the housings use a different mounting so they will not work in the stock location.. Make sure you swap the stub shafts too, one is a bit longer on one side.. Or just pony up for a mazdaspeed plate style LSD and not worry about it..

[trailrider098]

no more diff ?s, problem solved

87-89 mazda gtx
90-94 mazda gtx/gtr
protege 4wd
the entire rear differential interchanges between these models, the only difference is the GTR differential is viscious lsd and the others are open differentials. All rear gear ratios are the same
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90-93 mazda miatas use the same 6 inch rear differential but it uses a different housing that wont bolt into our AWD cars but the open or lsd differentials can be swaped. you will need to use the ring gear from the AWD car as the gear ratio is different also use the AWD stub shafts.
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94-97 mazda miatas use a 7 inch rear differential. This can be swaped into an earlier miata using several 94+ parts, but the 7 inch diff can not be swaped into a AWD without heavy custom modding. certian year/model RX7's also use the 7 inch rear and that differential can be swaped between the 7 inch miata and rx7 diff housing.
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there is also a 8 inch rear diff used in the last generation rx7 but there is no point in ever using that on one of our AWD models cause you will blow any AWD mazda tranny before you blow that differential

[ryan1]

You will need to take it apart, and swap the LSD carrier from the miata to the pro 4wd diff, the housings use a different mounting so they will not work in the stock location.. Make sure you swap the stub shafts too, one is a bit longer on one side.. Or just pony up for a mazdaspeed plate style LSD and not worry about it..

do you have any pics? im new to the awd stuff.

[ryan1]

well i will be bring out my winter boosted ride soon 90 awd pro with a bp and small .42/.48 t3 and starting to think of some things i want to get done before i drive it daily for the winter,, so bringing back this post.
so if i want to do the lsd miata stuff i need the miata diff and stub shafts and thats it right?
also if you have done this how do you like?

[therieldeal]

yeah thats all you need. idk if anyone has compared side by side but it is likely the exact same VLSD they used in the 323 gtr.

[SgtRauksauff]

you still should put in new carrier bearings, and pinion bearing, and seal, and a new crush sleeve, and set the backlash etc. As far as I know, the ring gear needs to be taken off of the Protege open diff, and put onto the Miata VLSD, so you'd need new bolts to do that also.

That's basically why I haven't put a miata vlsd in yet, because I just haven't had the time, or resources yet to have that part done.

--sarge

[therieldeal]

i figured replacing all of the wear parts was a given

yes you do need to swap ring gears, didn't realize that you had to replace the bolts though?

[ryan1]

you still should put in new carrier bearings, and pinion bearing, and seal, and a new crush sleeve, and set the backlash etc. As far as I know, the ring gear needs to be taken off of the Protege open diff, and put onto the Miata VLSD, so you'd need new bolts to do that also.

That's basically why I haven't put a miata vlsd in yet, because I just haven't had the time, or resources yet to have that part done.

--sarge

yes this would be replaced also, were is the best place to pick these bearings,seals and sleevs up at , will a local autoparts store carry them?,if they do any certain brand? or maybe only mazda parts, if i can find a vlsd, i want to do this qaulity parts and only do it one time.