i have an eg6 b16a2 hatch and i want to put some new piston ring set,seat valve adjustment and all that's necessary when i will open it.

i was thinking to polish ( with a small diameter sandpaper ) the intake mainfold,the head,the sewer valves ( sorry maybe it's not the best word,but i am not english ),the head of the piston and maybe the rod. is that a bad idea ?

any tips or tricks at the engine rebuild in order to pull stronger ?

 

bump for some hints

 

You really shouldn't take sand paper to the piston, the connecting rods or the valves. You can gasket match/ port the intake and the headfor better flow.

 

it's possible to wreck the piston head if i'll use some small diameter sand paper ? a fine one ?