Originally Posted by
22Racer
Silicone filling a crank does not make more power. It is drilling out the crank and making it lighter and then filled back in with lighter silicone. Tungsten on the counterweight does add some weight but helps smooth out the engines vibrations at high rpm.
Ceramic rear bearing is better and lighter.
Rex
I didn't actually say filling the crank made more power on its own, but from what I have read & understand, it helps direct fuel through the crank in some way that would help towards a performance increase when used with other modifications, like lightening the crank. Maybe it makes tuning easier, I don't know, just going off things I have read & heard.
If it done nothing then it wouldn't be used would it.?