I'm not sure what direction to go from here being new to diesel marine engines. Your advice is very much appreciated.
Ok, this is a Yanmar SB12 that locked-up about four years ago from two owners ago (don't know details). I pulled the head to check-out the piston and cylinder (first photo) and they don't look so great. I went with the Coca Cola method and let that sit for a day and tried to manually crank and even with my body weight on the bar, she wouldn't break free. Then tried wood on the piston and tapped with a hammer - nothing. I drained the oil to see if I could learn anything from that and it looked pretty clean and was definitely free of water.
I don't want to give up on the engine because I enjoy learning and have the time but want to know if I should start parting it out.
In the second picture, I cannot get "1" to spin or break free either. Any suggestions? What is the purpose of "2?"
Thanks everyone.
Ok, this is a Yanmar SB12 that locked-up about four years ago from two owners ago (don't know details). I pulled the head to check-out the piston and cylinder (first photo) and they don't look so great. I went with the Coca Cola method and let that sit for a day and tried to manually crank and even with my body weight on the bar, she wouldn't break free. Then tried wood on the piston and tapped with a hammer - nothing. I drained the oil to see if I could learn anything from that and it looked pretty clean and was definitely free of water.
I don't want to give up on the engine because I enjoy learning and have the time but want to know if I should start parting it out.
In the second picture, I cannot get "1" to spin or break free either. Any suggestions? What is the purpose of "2?"
Thanks everyone.
Attachments
-
36.5 KB Views: 50
-
38.8 KB Views: 59