Savage Diffs

[JasonB]

Now that we have the bullet proof diffs, the only weak part of the diff is the 10x16x5 (B032) bearing. I've tried milling down the stock diff case to accept the 8x16 bearing and that works, but this weakens the shaft and it snaps off after a few packs.

Solution: After much digging, I found out the Vorza Flux diff case will fit perfectly. It's actually a Hot Bodies part number from Lightning Series truck (HBC8019). Yes, this is a plastic diff case, instead of aluminum, but it has a steel ring at the end that accepts the 8x16 bearing. The diff case is very rigid plastic, and seems like it will hold up well. An added bonus is that the plastic will not let the screws back out. I've had hit or miss success with loctite on the stock diff case because of grease getting into the holes, but that will never be an issue again. The Savage diff internals fit perfectly, however, you will need to sand a few thousands off of the length of the cross pins to get them to slide in easily. Everything fit nicely and the diff is smooth as silk. I am very happy with this upgrade and will never use the 10x16 bearing again.

Based on what I've read, the Kyosho Inferno and Hot Bodies D8 diff cases and internals are also direct drop in parts; I have not yet confirmed this.

Here's another tip: If you've ever wanted to reverse the direction the motor spins and still go forward, reverse the diffs. All you have to do is grind off the little tab inside the bulkhead and then you will have the option to install the diffs in standard or reverse orientation.
Benefits:
1. Motor spins reverse direction which will cause the pinion to push up against the stop if it ever loosens . . . no more pinions falling off.
2. The reason I decided to try it was that I noticed that my truck was running quieter in reverse than forward . . . probably due to wear on the transmission gears. Now I'm using the other face of the gears so I'll get more life out of them.
3. It's cool to have options.