A relatives mini rio just shattered a brush in the VR3 motor (which wasn't as fast as hoped), and I happen to have a spare 2040 4800kv kicking around.

Will it have enough grunt? This boat runs on either the stock 6 cell pack, or 2s 1300mah lipos. Right now it has a 27mm prop on it, but I've got some other small ones to try as well.

Most boats I've seen have 380 (28mm) motors, but I think the 2040 might work? I've got a "small bolt" that runs a 2040 motor and and 32mm prop, and it's a bigger/heavier boat than the rio.