Compression for 300hp models

[poundsterling]

Good evening to all,

New to the forum, I have recently bought couple of Yamaha 300 HPDI outboards build date 7/2005 (LZ300TRX and Z300TRX).

Number of hours currently unknown, but I would like to know what a reasonable average compression reading should be for a Yamaha O/B motor of that age.

Thanks

[rodbolt17]

all within 10 PSI of each other.
no set spec on compression.