Don't let the putty filled crank steer you away from the engine. I have been testing a putty filled crank and when compared to stock I see almost no performance gain. Maybe a tick of throttle response(whitch is not measured on a dyno) but not enough for me to fill the next one I get. JMO

This one has about 3 gallon on it and just lost it's metal pinch last weekend. We are headed to the OS/Futaba Nitro Challenge tomorrow night I will post up how the engine runs this weekend. The 7hr drive is going to suck however! lol