C ChrisCall . Mar 27, 2016 90 Hunter 36 Hingham May 24, 2016 #1 what size should the thru hull be to engine intake on catalina 30 with a universal m25xp engine
C Capt jgw . Feb 8, 2014 1,300 Columbia 36 Muskegon May 24, 2016 #2 Same size as the hoses. I believe they're 1/2" on that engine.
Ralph Johnstone . Jan 4, 2006 7,641 Hunter 310 West Vancouver, B.C. May 24, 2016 #3 3/4" for a Yanmar 2GM20F.
