Savage Diffs

[ljoncp]

Originally Posted by JasonB

I'm surprised to. I think it's all about what lube you run in them, and of coarse proper shimming. I know there are those that disagree with this, but I think grease and thinner diff oil, is much kinder to the gears than diff locking oil. Issue with thinner oil is it sneaks past the o-rings quicker. However, diff oil is a necessity if you need to tune your truck for racing or partially lock your diffs for climbing.

Grease is a win win for me because it keeps the gears happy and doesn't leak out. I'm curious how the STP stuff will work out . . . who knows, I might even like it better.

I recently tore my diffs apart again and filled the rear/front with 30k/50k about 3/4 full in the diff cup. Then put a nice glob of STP oil treatment in them to fill up the the rest of the space. This stuff is a lot thicker/goopier than i thought. Hopefully it treats the gears well!

I was tightening one of the diffs when near the end i heard a little crack.. My torque-o-meter tells me I wasnt using excessive force.. The stock cup is just straight up weak and made out of soft material.. (aluminum is soft in general but HPI's is like butter) So needless to say, there goes my extra diff cup I had on hand. Will be purchasing the Vorza cups very soon.





Question: So the stock diff internals drop straight into the vorza flux diff case.. literally no difference in shimming or anything?

Thanks

[JasonB]

ljoncp, The stock spider gears, cross pins, shims, etc. are a direct drop in. The Vorza cups are actually a hair smaller inside than the stock cups, so you may need to sand a few thousands off the length of the cross pins. Do a test fit first ofcoarse.

This has nothing to do with useing the Vorza cups, but I have recently started to shim my spider gears (both the 2 large ones and 4 small ones with an extra washer). You will have to experiment with this to get the perfect fit. You may be able to fit an extra washer behind all 6 gears, and you may only be able to fit one be hind just the 4 small ones. The idea is to get the mesh as tight as possible without any noticable extra friction. You won't be able to tell for sure if the mesh is right until you have screwed it back together (2 screws should be sufficient for doing the test fit).

I am blown away by how long my diffs are lasting! I run the truck for at least 2 packs almost every day, and although I am a sensable driver I don't baby this truck by any stretch of the imagination. I used to go through diff cups, bearings, and spiders like crazy!