Yes there is an increase in bottom end torque and you will notice it. I would suggest it after you have worn out the .16 and need to rebuild it. It is a whole lot cheaper than a new motor.

The conversion has been discussed more thouroghly in other threads
http://www.rcuniverse.com/forum/m_25...ey_nt18/tm.htm
http://www.rcuniverse.com/forum/m_23...nt%2D18/tm.htm


rolland