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Maybe a dumb question but is this a LSD

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I bought this from a upper end wrecking yard that more or less only deals with newer stuff.

 

This is supposed to be out of a 03 WRX wagon auto. I took the plate off and sure enough the gears were right, being 4.111 that I was looking for. But I have never seen a factory LSD. If anyone has looked inside a WRX rear end is this what they look like.

 

Sorry for the crappy picture but all i had was my phone.

 

03-07-07_1227.jpg

  • Author

ill get a better picture today.

 

but if thats the case i have some hell to raise when i go back.

Just turn one of the axles. If the other axle rotates in the same direction then it's an LSD. But it's an open diff if the other axle turns in the opposite direction.

Cool pics. I have no idea what the answer is, but am interested.

 

Are the WRX diff's similiar to my 02 OBW's diff? I've never opened one up, but am told it is a vLSD.

 

If they are the same, where is the 'viscous' part?

  • Author
Just turn one of the axles. If the other axle rotates in the same direction then it's an LSD. But it's an open diff if the other axle turns in the opposite direction.

 

well if i turn one the other turns the same way. i know the basic theory behind the LSD I just was wondering if anyone has looked in a wrx rear end and

if this is what they saw or not.

 

it's just not a style that i have seen before.

Looks to be open, but if the both axles turn the same direction, i guess that rules out it is a LSD.

Looks open to me also. However, the other test is to turn the input shaft and if both output shaft turn the same direction, it might not be an open diff. Perhaps VLSD?

  • Author
Looks open to me also. However, the other test is to turn the input shaft and if both output shaft turn the same direction, it might not be an open diff. Perhaps VLSD?

 

 

it acts just like any LSD is supposed to, twist an axle the other axle turns the same way, turn the input shaft they both turn the same.

 

i just have never had any experience with viscous LSD. is this what one is supposed to look like. i know what i clutch type looks like, Torsen too, even the cone style. but normally there are springs, or something.

nope, thats an open diff. this is what a LSD looks like:

 

LSDinsidesm.jpg

  • Author
nope, thats an open diff. this is what a LSD looks like:

 

LSDinsidesm.jpg

 

 

what is that from, that almost looks like a old school clutch style rear end.

 

but what the hell do i know, im going to call them up tomorrow and raise hell,

  • Author
nope, thats an open diff. this is what a LSD looks like:

 

LSDinsidesm.jpg

 

 

well i just had someone from nasioc ID my picture of the rear end. he positively IDed that as being a viscous limited slip from a WRX.

 

So mark that down as something learned today:banana:

  • Author

ok just for my own knowing, i went to subaru and had them print me out a blow up of the rear end of a WRX LSD and low and behold it shows exactly what i have. well good to know for sure now.

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