its a JDM B20a out of a 3g prelude

she got the motor in and is rebuilding it, new rings, new seals, all that good shiz

complete rebuild, but as we have never had it running, i'l burning is unknown, but everything looks good in it on visual inspection

and is that a good hone?
what abrasive?
or what do y'all use, or is it really necessary to even do it at all