Phantom Grip Limited Slip

[blitzballa]

Found these guys on Ebay
http://www.phantomgrip.com/Datsun-Sunny ... da7732.htm" onclick="window.open(this.href);return false;
Seems from the article as a good way of upgrading the H165 diffs many people use in to an LSD type diff. Does anyone have any info or has any used this product before? I'm always a bit sceptical about products I find floating around on the net.

[Naki-Fisher]

Nice simple looking set up.
Maybe the guys on the 1200 site have used them before

[Bartman]

I have a home made (but done pro as) one in my 1200.
Better than open, but not as good as a proper LSD.
Mine has probably had it's best days now. Guys at the drags used to tell me it would unlock sometimes while I was staging.

[85_Z31]

I believe what bart is referring to is where the saying "Phantom slip / Random Grip" comes from

The Americans never had much sucess with using them in the bigger diffs, plenty of reports of them damaging perfectly good wheel bearings and ring gears.

[Naki-Fisher]

Did you have to machine your gears Bart and have got a drawing of it?

[Bartman]

I don't have any drawings, and yes the side gears needed to be faced. They looked to run true, but were actually not.
If you look under the profile "1200coupe" at http://www.datsun1200.com" onclick="window.open(this.href);return false; he has a photo there of his one. And he told me how to make mine. It would probably be okay for a rally car. We did one for a guy from napier with a circuit car, and with his stiff chassis, and sticky tyres he reckoned it locked and unlocked quite violently. His diff guy reckoned it could be remedied, but I think he's since sold the car.
I actually think it's the reason my diff has stood up for so long tbh. Under harsh impact loading it probably takes the shock off the idler pinions. That or I just got really really really lucky. My diff head came out of a 910 wagon at a wreckers. And it's had untold abuse. And although a 1200 is quite light, my engine makes more torque than most A15's.