Is the fluid type lsd from s5's interchangeable with my 87GXL with the 4.1 clutch type?

Justin

 

you can change the whole diff, I don't know if you can swap internals...

 

Yep.

If you can get the clutch type like you had originally the engagement is much much faster than the fluid type.

The other swapable part is apparently the Torsen diff from a Miata.

The only advantage to using a fluid type LSD is they don't wear out. However if you use the wrong gear oil it will destroy the Fluid type.

 

how much and how hard is it to put the miata rear into a 87 sport


also how much power can the stock block miata rear take before BOOM!!

 

Do you have any more info on that? Also, how much abuse can the Miata LSD handle?

 

Are those only on certain year or model Miata's? Or, do all Miata's have Torsion rear diffs.

I know nothing about those cute lil thangs. Icemark, you out there still?

I assume to take advantage of Torsion in my Vert, it's a pumpkin swap exercise. I'm assuming the rear diff housings and mounts are different.

Right, wrong?

 

I have also heard that the there was one edition of the miata that cam with a six speed tranny that will bolt to the rotors. I think it was some (last ten years) anaversary edition that was special order but they made plenty of them so you can find them in the yards sometimes

 

mmmm... 6 speed AND LSD!! wheres my wallet? keep the info flowing. id like to find out more about this... no secrets here, eh?

 

If I was to swap lsd into my 88 se would I have to change the whole thing? Does anyone know what models had lsd that will directly bolt up to an se? Thanks

 

The torsion diffs in the Miata were offered from '94 to present.
Interchange guide (from the other side of the fence) can be found here: http://members.aol.com/solomiata//MiataVLSD.html

The torsional diff can easily support 300hp.

The 6 speed tranny can be ordered from Mazda for $$$$. If you managed to bolt it in, you'd need a 3.90 rear to avoid having really short gears.

 

Ohhhhh, THAT lsd.....

 

Yes the Torsen diffs are on some models from 94 on. M editions and a few others.

They handle up to about 300 Hp- or 275 Ft/lbs

I hadn't heard about the six speed bolt up. I'll ask around my Miata buddies and see if anyone knows.

The six speed was only available from about 98 (99 model year) and up

 

I emailed Racing Beat about it, but Im still waiting for a response.

 

holy sweet meat ;-)
also what about the torsen from a FD
Is the miata diff more bolt-on?

 

They're on every single model except the base. If a 5sp '94 has a leather-wrapped steering wheel, power mirrors, aluminum alloy wheels or headrest speakers, then it's got an LSD.

'95, '96, & '97 - if it's a 5sp and it's has a power antenna, then it's got an LSD (no relation between the 2 features, just the easiest way to tell).

Automatics are all open diff.

The only other M1 with an LSD would be the R package. This model can be distiguished by bilstein shock absorbers, rear spoiler, front air dam, and rear skirt. The shocks are yellow. R packages are rare (1841 produced over 4 model years) and would be considered the Miata equivalent of the GTUs.

All this info and more can be seen at:
http://www.geocities.com/MotorCity/5361/

 

this is great stuff!! i cant wait to find a miata 6 speed! will the whole tranny bolt up, or will we have to switch the internals of the gear box out? and then along w/ that, would we use the stock driveshaft to bolt to the miata rear end? or swap internals on that part too? i know little about drive trains.

 

Does anyone know the gear ratio in the Miata unit?

And for those who are calling it "torsion" it's Torsen - short for Torque Sensing.

 

hey i want one of those. maybe i can get in my truck and find a miata to run over. then i will steal his whole tranny and diff

i should warn you guys not to smoke as much crack as i did today. (check out my xpipes post!!)

Justin