Has anyone done business with "Precision Gearing"?

[Landrunner]

I am in the market for a new differential and was wondering if anyone could speak about his or her experiences with "Precision Gearing"? I found this differential on eBay and spoke with Rob on the phone and he seems like a straight-shooting, honest guy, but I am looking to hear from customers.


The differential in question:

http://www.ebay.com/itm/BMW-E30-M3-3-91-40-Lock-LSD-Differential-325is-m3-/220856957245?pt=Motors_Car_Truck_Parts_Accessories&vxp=mtr&hash=item336c19b93d#ht_500wt_1129

Bear in mind I daily drive my car and will not be doing much in the way of auto-crossing, etc. I have no problem paying extra for a reconditioned differential so long as it works as it should. I don't have the cash for a completely rebuilt unit and definitely don't like fixing things more than once.

Anyone?

[Landrunner]

Bump for answers!

[Wanganstyle]

bearings are not changed.............

differential Bearings are matched to races - the Needle bearings wear down in matching patterns.

There is no OEM 3.91 e30 diff unit besides for the viscous coupling VLSD of the e30 325ix. The linked item is not a Viscous LSD.

What makes you need a 3.91 for DD use? 3.73 is not that much different, 4.10 is avail in e30 format from the factory.

if you wanted the less common 3.91 you could get a Viscous unit from a 325ix, you probably wouldn't notice the difference between VLSD and Clutch pack type LSD- the VLSD is actually more advanced technology.

[110stx]

I believe Precision Gearing is Jim Blanton's company.

Um, basically the Mecca for BMW diffs and trannys.

I can't believe they'd be cheap. They're the best.

d.hitchcock

[FredK]

Precision Gearing is the guy that used to build diffs for Metrix Motorsport, and is not affiliated with Jim Blanton in any way shape or form.

There are some reviews of Metrix diffs on the Track subforum on bimmerforums. I think the feedback is generally positive.

[Landrunner]

Hmm, anyone else?