Steady, Straight, WOT

[Rex Schimmer]

I use Kluber ISO Flex NBU15 high speed spindle bearing grease. Pretty expensive and you don't get much of it but they do include a nice syringe and assorted needles so that you can inject a small amount of grease between every roller (or ball). I then use a small dab on a clean cloth to wipe over the outer race on a roller bearing. Back when I was doing machine tools this is what we used on our high dollar spindle bearings, good for over 10,000 rpm.
I have seen guys that run the ceramic ball bearings run ATF and have gone over 200.
It all depends on what the bearing load is and the RPM.

Rex

[Rex Schimmer]

Just read Sparkey's post and not wanting to change the subject but I don't think a lot of people think about the power it takes to turn a differential that is filled with cold 90 weight oil. Also over filling either or both the tranny and diff with to much oil.
Rex

[Mr. Schimstock]

Made some good progress on the strengthening the rear axle.  Added a 1/2" thick girdle plate with bearing cap support screws. Also up-sized the cover bolts from 5/16 to 3/8" studs.  The upper part of the oversized plate will be for the upper suspension links. I'm planning to rung some triangulated plates to the input yoke area to relieve some of the loads in the plate.

[Mr. Schimstock]

With the plate made it was time for a beefier cover.  Melted down a bent Audi wheel and came up with this.  There's a provision for additional stiffening rods that go from the cover to out by the axle.  Totally stealing that idea from "Perfect Launch" and a few other companies.

[Mr. Schimstock]

Made a spare just in case.

[Mr. Schimstock]

The almost finished product. 

[floydjer]

Nice job on the casting...One of your many talents?

[Mr. Schimstock]

Nice job on the casting...One of your many talents?

Indeed.   Usually pour "found-alloy":  random aluminum I found under my bench.  For this one I wanted some reasonable properties.  Found Audi marks their rims with the alloy.  This should be approximately Al Si7 or A356 here in the US.

[Rex Schimmer]

That is damned impressive! You are a man with many surprising talents. That is a nice part. Looking forward to seeing your car (truck) at the at the salt.

Rex