Grind a Neu...

[mwry13]

It really depends on what your running the car on. (under race conditions) ive spun pinions off my motor on clay tracks but ive had good luck with them staying on on loose loomy dirt also... But i eventually ended up grinding a flat spot on my motor because its one less thing i have to worry about over a 25 min main.

[_paralyzed_]

I think this guy needs some reassurance! You can do it. You can't hurt your pretty motor. Grind away! If you're afraid of removing too much (you can't unless you remove half or more) align your gears, figure out where the grub screw will hit, and only grind there. It only takes a little flat spot. if you're scared use a file, I wack mine with a cutoff wheel and a dremel, you're making it way more difficult than it is. Get flatspotted!