H233b terrano rear diff question

[fh2014]

If I have two diff heads, how does one identify weather they are open or LSD? Have them both out and cant do the old spin the tyre trick

Reason asking is I always thought my diff was open as it would only ever spin one tyre and the tyre spinning test would spin them in opposite directions. I wanted a bit more traction so looked for an LSD, bought one and whipped out my current one and it looks identical to the one I bought. Have I been scammed (bought an open diff) or have I always had an LSD and it was just tired?

Thanks for any help!

[Crash bandicoot]

Depends on the age but the h223b is the axle what Houses the LSD, The bit you want to google is HG43/46
but pretty much any H axle made after 92ish and was diesel came standard with a LSD.

[BlakeNZ]

likely you always had one, and it was tired.
My mistral (H233b rear diff also) used to be a single spinner when i bought it. I wiped the oil off the rear of the diff housing, and found the orange sticker with LSD written on it. The local gear shop found that the centre had gummed up, and was not working. they cleaned it up, found it to be in pretty good order, restacked the plates etc, and the breakaway pressure was pretty good, so we reinstalled it. They have a reputation as being a good LSD, but in my experience the Eaton true trac leaves it well behind( had one in my Surf). Pity you can't get a true trac centre for the H233B, cos i would buy it instantly.

[ChurchurDan]

Have a good look behind the side gears and you should see clutches.

[fh2014]

Thanks heaps for the fast replies. Yes crash I have two HG48s / h233bs, still learning. Will take a good look tomorrow for clutches.

[ChurchurDan]

HG48 axle is an H233b diff

[darinz]

If working properly they are a really good diff and from a durability point of view (of the LSD) last better than the Toyota LSD.
In my winch truck I ran standard LSD rear and Airlocker front and in current truck I've been running open front and lsd rear but in process of fitting lsd to front. (So have the airlocker for the rough winch truck in progress)

[fh2014]

Swapped in the one I purchased, still no LSD action. wheels spin opposite directions, placed rear on stands and ran the truck at idle - can easily grab onto a tyre, it just happpily stops and the other one spins away at full noise. Wouldnt a correctly functioning LSD really try to fight you holding a tyre?

[churchill]

Yes if it's a clutch type LSD, Torsen LSD will spin freely, dunno about Viscous LSD's but suspect that it should start resisting fairly quickly.