I was browsing the for sell thread and i saw a speed passion 13.5 motor that said it was equal to a 27t. I thought the 13.5 was equivalent to a 19t and a 17.5 was a equivalent to a 27t. and what would u guys recomend for a good stock brushless.

Well, you're thoughts on it are correct, a good 13.5 is noticably more powerful than any 27 turn brushed motor, though I'd actually equate them more to a 23 turn brushed than a 19 turn(good 23 turn motors are actually pretty close in power to many 19 turns, & they have VERY good torque, really about the closest brushed motor to a 13.5), while 17.5 brushless motors are the new stockers(though the best 27 turn brushed motors can be a bit faster, but it's close & a 17.5 will perform the same from the first run to its last, while the brushed will need CONSTANT maintanence to keep it fast enough, they'll run differently every race). As for which ones are good, I keep hearing a lot of people swear by Novak's & one of Trinity's(I think the Duo series motors are the popular choice), but I only have first hand experience with the Speed Passion one(which I like, seems to run pretty strong in my TRF 416WE).....

dont forget the old brushed heat fade

Hey gimme a break, I'm getting old, bound to forget a few things...

How man tuns is 5700 Kv brushless motor from castle?