Cen,
Finally, instead of buying piston, sleeve, conrod and cooling head, I buy the new NX30 engine.
The body is stamped NT-18 instead of NX30. Marine Engine with different head ????
Yesterday, I just break it in. Using 20% nitro and OS-8 plug. As usual, no problem at all, one tug can start the engine easiliy.
Do you have any suggestion on what kind of plug do I need to use for the best performance, because the engine come w/o plug and I have no reference for it.