Hi, I need a picture of the inside of a Newer Forester or Outback R160 diff (the ones which clip in stubs not bolt on stubs).

 

Cheers,

Thomas

bump.

 

May want to search over on Nasioc. There's probably some pictures in the drivetrain forum.

Cheers mate, found a couple of pictures.

In the bottom of this thread here http://forums.nasioc.com/forums/showthread.php?t=1769174&highlight=R160 there are some pictures. I have a question if anyone is keen to answer. The pin has a cut out on just one side, why is this? To clear the stub?

The pin has a cut out on just one side, why is this? To clear the stub?

 

yup.

 

But that is a VLSD. (even though the poster in that thread thinks it isn't)

 

I don't think the open diffs have that cutout

Ok, so if that is a VLSD, then can I have a picture of a open diff? Or could you answer me this, are the side gears the same?

i'm no expert, but that picture sure looks like an open diff to me.

 

 

Edited October 5, 200916 yr by johnceggleston

Whats the V?

 

Looks like an open diff to me too. What tells you that it isn't?

Viscous.

I think between the side gears and the carrier there are viscous plates. Basically little oil pumps that create high pressure oil between two surfaces to gain friction.

Thanks.

That looks like an open diff to me also.

 

VLSD carrier, u cant see the internals very well (the spider gears) because its almost a sealed unit for the fluid pressure build up.

 

I have a diagram of the diffs of never cars if u need it. Pm me

the picture posted above is just a plain open diff. this is a pic of a LSD diff. i believe the only difference between LSD and VLSD is the VLSD is sealed with a special oil inside. the LSD uses the fluid of the diff to work.

 

LSD's can be Viscus LSD, Clutch LSD, Mechanical LSD or Electronic LSD.

So comparing a LSD to VLSD in my mind makes no sense as a LSD can be a VLSD.

The viscous LSD rear diffs utilize a similar viscous coupling as what is used in the center diff. It's a sealed unit with a silicone base fluid inside. The actual differential fluid has no effect on the viscous coupling.

 

the one on the left is a VLSD.

the one on the right , open.

 

 

viscous is fluid based,our normal "lsd's" are clutch based.they both utilize the same idear.make plates lock together .

 

springs vs. fluid .......

 

i thought to high hell that the one on the left was open.but , twas not.acts like open, until there is enough pressure to activate it.

i took one apart at one point.

 

here are some pics........cheers, brian

the picture posted above is just a plain open diff. this is a pic of a LSD diff. i believe the only difference between LSD and VLSD is the VLSD is sealed with a special oil inside. the LSD uses the fluid of the diff to work.

 

 

that is a clutch type , like we are used to seeing.cheers, rbian

i'm no expert, but that picture sure looks like an open diff to me.

 

 

 

 

VLSD, cheers, brian

VLSD, cheers, brian

 

How is that a VLSD?

Those extra pictures in that link at the bottom of Brian's post make it look morel ike a clutch lsd?

 

Many plates

Those extra pictures in that link at the bottom of Brian's post make it look morel ike a clutch lsd?

 

Many plates

 

The way it works though it the fluid heats up as its pressurized within the "grooves" that you see when one wheel begins to spin, and thus it locks up. The clutch types have plates and springs that press against each other.

 

The viscous ones act like an open diff until there is enough wheelspin to heat up the goo inside to lock it up. Once the viscous fluid has been heated up too many times though, it will break down on a molecular level and no longer work.

 

-Bill

So they appear like an open diff when you turn on side of them? So this rear diff VLSD type isn't like the centre VLSD's Subaru's have because they don't have a preload tension?

So they appear like an open diff when you turn on side of them? So this rear diff VLSD type isn't like the centre VLSD's Subaru's have because they don't have a preload tension?

 

I dont know about the preload tension, you would have to ask Brian about that, as he took it apart..... He would know

 

-Bill

A properly working rear VLSD will spin both wheels at the same time, even if you just jack up the rear wheels and spin them. There should be no "ramp up" time heat up the silicone fluid inside the coupler.

well, there is not tension between the two main plates,meaning it did not "{spring}" apart......

 

umm, it is a vlsd.

 

and i've no idea about how it actually works, i have only read what it is theorized to do.

 

and by examining it , it cannot be that different than a clutch type.i am pretty sure that the clamp down force is not equal though.....

 

 

and when i was searching out the 4.44's i came across 5 or 6 cars that had a vlsd in them.and every single one spun opposite, i cannot imagine that they were all bad......there has to be a couple of versions of thes4e things about.......

 

cheers, brain

Edited October 13, 200916 yr by monstaru

The pics in your link are for a clutch based LSD. The VSLD are sealed units and use a silicone based fluid with the torque transferring coupler.

this guy knows his stuff, thanks Brian good info