please help

[lias]

I vro 225 hp engine that is under compression and want to change them the piston rings my question is what is the extent of the rings that I need

 

[lias]

1992 johnson 225 hp

 

[lias]

If the e tested and all the Pistons are the 70 psi

 

[lias]

The engine runs well starts well, only in low I fail a little, but runs fine

 

[lias]

OK thank you I do and then tell them