Q: I got this diff and am having trouble with gear mesh. I'm using mini z spur gears. The only gear thats even close to ok is the 8T. I'm running pn 70 motor with correct motor inserts.
A: this diff uses stock 0.5 mod pitch spur gear, with stock pinions it should mesh the same way as its with the stock diff
The 64pitch PN pinions together with this PN ball diff can be used with the standard plastic motor mount or the PN Racing alum motor mount is mandatory?
A: Its recommended you get a adjustable motor mount but it works fine with stock motor mounts, you may have to use shims and test them out if its too tight or loose. It just easier and more precise with a aluminum mount, that's about it.