see attached ..

Thanks

Edited February 2, 201411 yr by malibud

see attachment

You didn't ask a question and you posted a picture of an open diff.

i am sorry I was asking if this was a LSD I was told it was an r190 LSD. Looks like like I got my answer thanks . How can you tell the seller told me that both axles turned .

But do they turn in the same direction?

Same direction was what i was told . But it appears this not an LSD ? Were all R 190 s LSD ?

LSD's have a clutch or mechanism of some kind in the carrier (the center structure with the small gears in it) to distribute force to the wheels, where in your picture you just have four spider gears (the small gears). That's a good picture because it shows the spider gears and their shafts, no clutch.

People do weld the spider gears together to make the wheels turn together. Most load up with lots of weld material but it's probably not needed. The one in your picture could be welded even though it's not obvious.

Here are some links with pictures of R200 CLSD's. An R180 or R190 would look similar. The second and third pictures are the best because they show the ramping mechanism (the diamond shaped piece) that distributes the force through the clutch.

Nissan OEM 3.90 R200 LSD Diff Limited Slip Differential Clutch Type Datsun 240Z 260Z 280Z 280ZX 300ZX Z31 | Whitehead Performance

Datsunracing.com Image Gallery :: My '73 240Z :: lsd

http://www.nengun.com/nismo/nissan-motor-r200-lsd-for-mechanical-177132

Edited February 2, 201411 yr by Zed Head

Got it now . Thank you for your time . I learned something ... you have been very helpful

One of the guys restoring a 240K sedan has an example of a R180 welded.

Its in post 145 of this thread: http://www.classiczcars.com/forums/open-240k-discussion/44259-terrys-project-240k-2.html

IMG_2335.jpg Photo by terry_350 | Photobucket

Shows what Zed is refering to about welding a standard (spider gear) diff.

Cheers Chas

Edited February 2, 201411 yr by EuroDat
Photobucket from Terrys project.

Whoa! Maybe I'm not understanding the principle here but aren't these welds going to cause damaging stress the rear end as soon as you turn a corner ?

I wouldn't sugest doing it to a street car. I don't think Terry is that impressed with it either, but his car my have had a previous life as a "paddock basher".

That happens often in Australia. Farmers give their kids the old retired family car to dive around the farm and to give it better traction, they weld the diff.

Yep, been there, done that so to spreak.

Chas

It happens here too but they are called "bush buggies". Makes sense now. Might also be good at the drag strip.