i just bought a zc motor dohc, and the engine turns freely ( turns easy).

if u have a two same engine and one of them turn easy and the second one turns hard ( more strenght ). which one would be the best engine? i will apperciate some comments

 

if it has spark plugs in it you better need two hands to crank it.

 

it really depends on what you mean by "hard"

if you have plugs in it, crank it and see how long it takes the compression to bleed off. should be like a springy feeling to it.