how are they???any body ever run em before?

I RUN THEM!

well so do i..... i just wanna know other peoples feed back

You may have posted in the wrong section. But anyway, here's the official GO Engine thread:

http://www.rctech.net/forum/exclusiv...es-thread.html

there is a whole thread in the exclusive nitro engine zone. You will find all the answers to any questions you have concerning those engines

I love my Go Motor. It has plenty of power, very little tuning needed day to day, and have never had a flameout.

Yes there very strong motors with a lot of pinch from the factory! You need to heat them up for break in or else you will wear out your con rod real quick.

i just left go engines, but not because of the engine themselfs, just because i want to try something differnt.

they are a perfect engine for any club/domestic races.

i bought a reedy an alpha z852 because they are the perfect engines for buggys(small tracks and bigs tracks)

VERY IMPRESSIVE I MUST SAY!!!!! i have had a few of the go .21 gen5.5 and they scream! one of them was hard for me to tune but could be many differnt things that could have caused this, im likeing the feedback on the newer models!!!! and will buy more if the price is right!!!!! i will be buying 4 mills in the next couple months to run for next season, havent decided what ones yet but the GO .21GX SERIES is on the list forsure! one of 3 im trying to decide on! the other is also GO based and the other is a high dollar mill im not sure if is any better!
and one more thing, the customer support is yet to be beat!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! thanks RUNNE!!!!! you da man!!!!!