Ive been up all night looking at different LSD swaps.

It seems that the R200 out of a Turbo 300ZX is the easiest, but i have learned that they are very hard to come by.

So im wondering what the most cost effective/ Easiest (Im reluctant to say easiest because i know it will be a lot of work either way) LSD swap will be.

I suppose i could weld an open diff, but i really really dont want to.

Thanks for any info.

Ive used the search button but have not found anything about what might be the best way to go.

Thanks

I do not know about easy, but the subaru WRX diffs will bolt in with some work. You will need to convert to CV's, but it is one hell of a stout diff!

If you look at HybridZ site you will see that they have someone that is making stub axles to fit into a subaru STI r180 diff. This would be the wisest way to go, maybe not the cheapest. You will have 1000$ into the project, but it would snap together easier then a lego set and you will have equipment that was made in this decade, and the true tested strength of an STI diff.

In fact, I will probably be selling my r200 LSD to go this direction myself.

....and you can use your stock halfshafts.

Interesting ideas, im gonna have to look into that.

I worry that it wont be an option for me, im trying to keep this build a budget one, but i have a feeling i might drop all the cash im saving by doing all my own body work/motor mounts and such on engine and drive-line.

Still tho if anyone has any reliable but cheaper options id love to hear them whal i research the WRX diff

I recall from your other posts that you intend to put an LS1/LS2 in the car at some point. Bear in mind that those engines can easily spread any of the differentials mentioned in this thread all over the highway........

I'd have to disagree with that statement. From what I have read at Hybrid and other sites , the r200 would handle almost anything the ls 1 would deliver, unless this person was planning a pure drag racing effort.

As far as the r180 in the wrx sti, I think 300hp would be handled easily. Anything over 300hp with the Z car, then the owner doesn't have a budget minded car anymore, but needs to invest in top-shelf equipment for every aspect of the car.

Your prerogative to disagree but I'd trust my first hand experience over what I read on HybridZ. I've helped no less than four people change out blown R200s to solid rears in V8 Zs.

Those 4 r200's were LSDs?

That I'm not sure of but they were R200s. And torque is probably more crucial than HP where these failures are concerned.

I am no diff expert-by a long shot. And i am not arguing for the sake of arguing, but that's why I asked if they were LSD's. From reading Jon Mortenson's posts here and at HybridZ, the LSD is a 4 pinion diff which makes a huge difference in strength. I was just reading that in his opinion a r200LSD would handle 400hp all day long. To me that is more then enough for a "budget minded' build.

Another route might be to install a LSD unit in a diff---if you can trust someone to know what they are doing to install it. Then by cost numbers you might as well have bought a r200lsd---if you can find one.

Oh, I'm not claimning to be a differential expert either. I just helped them change them out. Each of those cars were pre LS small blocks with mild mods but I don't think any but maybe one of them put out anywhere near what a stock LS1 or LS2 does.