Has anyone used on of these? Seems like it is a good price if it works, $349. www.phantomgrip.com

 

I never used the phantom grip lsd. But have the quaife.. And that's a must mod I would recommend to anyone!

 

they are the cheap version of shadows.


i would save and get real 50/50 LSD from ac-signworks.com (jeff)

 

I saw one LSD on a website..... sure looks like a stock diff with a phantom grip installed. SCC praises the one on the sentra they did.

Perhaps for sub 300hp they might be good...........anything more and I'd go with quaife.

 

I think I will go with Phantom Grip when I drop my tranny...found it for $260. So far, I have a Exedy Clutch and a Fidanza flywheel to put in and I want to do all tranny work at once to avoid labor fees. I know a guy that had a phantom grip in his H23a Prelude...it was good up till 287 whp. He upped the boost and broke his tranny at 456 whp. He didn't blame the failure on his Phantom Grip, but on the overall tranny...but he now has a highly modified racing transmission and a Quaife.

I think if you keep the the car under 250 hp, it should be fine.

 

Just so you guys know Phantom grip and Quaifes are TOTALLY different animals. The Quaife is a much more sophisticated item and is more of a "true" Limit slip differential. Phantom grip is another animal in itself.

 

All a phantom grip does is it puts pressure on the spider gears within the differential causing them to spin as one rather than separately, thus putting power to both your wheels instead of just one in a turn or one-wheel-slippage situation.

 

And not knocking any certain product, but if you look at the vitek it looks like a stock diff with a phantom grip like mechanism. But im not degrading its quality aby when i say that.

 

Would it be cheaper to buy a used lsd 5spd or get a regular 5spd and add the aftermarket lsd???

 

The LSD in the Canadian Maximas and the US Infiniti I30s are not a true even split in power. It is more of a 70/30 split. I am about to finish up my LSD project that I doing with Shadow.......

 

Any updates with anyone?

I'm one step closer to my tranny work. I have in my living room a Fidanza Flywheel and an Exedy Stage 1 Clutch. I'm still debating between Shadow's LSD, a Quaife, and the Phantom Grip. I'm trying to research the long-term reports of the cars with the Phantom Grip. So far it seems as long as you stay under 300 whp, it'll hold up. Early users complained that it didn't have enough limited slipping bias, but an upgraded spring package has greatly improved the concensus. I'm trying to get an update from Sport Compact Car. I'm still open to the Quaife route, but for $1,600 (diff plus rings, bearings, and speedo gear) plus install is something to think about. Too bad I didn't hop of the deal when Eric Wong was selling his.

 

Thanks.. I hopped on it though

 

Hopefully Erik (Ramius) finishes everything up and posts his opinions. I've been trying to get them out there.

Basically, ours looks like a Phantom Grip because they are similar ideas, but that's about it. There are lots of differences. That and our diffs are cryo treated (never had one diff fail since we started cryo treating them). In the next few months, we'll find out just how tough they are as I've got one going into a 600+hp 350Z w/ RB26(actually a RB30) conversion and a 1000+hp drag Supra.

 

Wow!!, that'll really test it out. I think that just might be overkill...I'm just amazed that everything is holding down that kind of power. I only know a handfull of people with 450+HP and they are all Cusco/Quaife snobs. As long as it'll last the life of the car and not destroy my transmission, I'll be happy. Please keep us updated.

 

Luckily the Maxima diffs are pretty big to start with. Much bigger than say a Ford Taurus SHO diff, and we have some SHO's putting out almost 400 whp with the LSD, and they're still holding up after 16-18 months.

It'll last the life of the car, plus there's the lifetime warranty just in case something does happen. It just happens that my friend's shop builds these cars with crazy power, so it's easy for us to test products on high hp platforms to see how they hold up.

Currently Erik is putting a turbo on his Max, so I guess he's as good a test platform as any. And I'll be turbo in another month. Though I had the LSD with my SC for over a year w/out problems.

 

You site says you have a core charge. Do you need an LSD diff or can you modify and open diff?

My appologies if this is a stupid question, I don't know much about transmissions yet.

 

Open differential, we could modify the LSD one too if you had one, but there's no point to using the much more expensive OEM LSD when we'd replace everything inside anyways.

Basically we just need the core since we don't have the capabilities to cast every LSD application. We bought a bunch of cores from a supplier for fast turnaround, but we do need your core for future LSD's.

 

$750 if I ship it to you?

 

You are correct. I'll even throw in free shipping on the unit, saves about $25.

 

Shadow, just curious, why would a company have a buncha cores laying around? Did they goto a buncha junk yards for the hell of it? I can't see Diffs being a part that dealerships replace often.
Jae

 

It's a company that specializes in differentials. Kind of like how there are places that only sell axles, or only sell radiators, and so on. This place sells both new and rebuilt differentials. We actually have two suppliers for cores, one here in Georgia, and one in California. I don't know where they get their supply from, but they have them for just about every car ever made. Check your local phonebook, these places are actually pretty common.

 

at jegs.com they have them for the 5-spd and the autos, talking about the phantomgrip diff...

 

Of course, it's practically the same thing. Couple of different shims.

 

dumb question. Does this work on a auto?
and is it recommended for a SC auto?