Originally Posted by
Micah78
Wouldn't you think that rocks would just get stuck between the diff/chassis and then ruin the aluminum diff cup? At least when that happens with the stock plastic cup it's dirt cheap to replace. Not to mention if you have a gear failure inside the diff cup it will be near impossible to wash/clean the metal flakes out of the aluminum diff cup before putting new gears in it. The reason I say this is because I've never been able to find a solvent that can clean silicone diff oil out of the cup. I've tried cleaning the silver diff oil out of a used diff cup and it was impossible. The only way I've found to have fresh clean oil for a diff rebuild is to replace the plastic cup. That could get expensive with the fancy aluminum cups.
The larger part of why I want the is to have a bigger volume of fluid in the diff because I'm getting some really high temps on my center diff.
I'm also hoping that the harder surface lets the rocks slide out of the space instead of the rock biting into the plastic and holding it there.
I'm not too worried about gear failure in the Tekno. Not that it can't happen, but it seems pretty rare. I also have a shop full of solvents and a parts cleaner, so I hope I have something to clean them out.
I agree, I have just replaced the diff cups in my Kraton/Senton when I had failure, but that seems to be from broken diff pins and not gear failure.