FORUM RULES UPDATED - The forum rules have been updated to continue to provide a friendly and safe environment for our member community. Please take a moment to review the updated rules and our terms of use and privacy policy. Click here for Forum Rules which has links to the 'terms of use' and 'privacy policy'.
The gear housing on my Merc 110 lower unit broke. I found a Merc 39 the lower unit looks the same but I cant find any information if they are interchangeable. Both outboards are from 1964. Does anyone know if they used the same lower unit?
I bought an 1984 sea ray 18'6" with a mercruiser 140 in it. Took it for a short water test seemed to run good. I installed a second battery and battery switch. Boat has new impellor. Took it out for a few hours and it ran good. Pulled into a dock and went in for dinner came back out and it would...