open diff to 300zx lsd??

[DubsSuck]

Ok, so like most of you i would like to get rid of my open diff without welding it. I have all the parts to change the open diff with a 300zx lsd, including 180sx axles to fit the 5 star bolt pattern. As i was thinking on how i wanted to approach this task, was wondering if it would be easier and less invasive and possible to just transfer the internals of the lsd to the open diff. I normally wouldnt open a new thread but i havent found any info on this, the only thing i could find was how to change the diff itself.

Thanks.

[compactfean]

I have personally swapped internals and if you can avoid it than do so. Backlash doesn't always come out right, and dealer charges $60 PER shim to adjust the backlash (and requires 2)

[Hijacker]

I would consider a different dealer if they charge $60 a shim. They list for $17 through Courtesy. Still expensive for guesswork. Last time I shimmed an R200 diff, I was lucky enough to be at a shop that had a bucket of shims sitting around.

Installing the internals from a VLSD isn't difficult to do, it's just a long process of test fitting. Get some prussian blue from a local machine shop and use the service manual to read the ring gear teeth for proper meshing with the pinion. I also recommend finding a way to use a corded drill to spin the diff. In the past, I've used a cot off socket extension to drive the impeller shaft. You want to avoid using anything that is impact style as it causes the teeth to bounce around. A smooth rotation is necessary to test the gear meshing. You can spin it by hand if all else fails, but I've found that if you can get it up to speed, you get a slightly better read out of it.

[DubsSuck]

Thanks for the info. are there any threads on how its done or is it pretty straight forward?

[compactfean]

It's pretty straight forward. You just unbolt the vlsd and bolt it up to the ring gear. where you have to get technical is with the bearing load and backlash. Just fallow the fsm.