Hi All, Newbie here.... thanks for havin' me. Does anyone know of the efficacy of converting a 1986, Ford, 6.9l truck diesel to use as a boat powerplant? Also, any info. as to where I could obtain an owners/service manual?.... it would be a great help.
Again, thanks and Merry Christmas!
Vincent

 

It makes a better boat anchor

 

thats messed up should give him a little time to get aquainted before you throw his powerhouse over board should welcome him to diesel bombers and help him find answers to his questions first and then have your way with him.good luck vincent and hope someone will answer your questions

 

check ebay for a service manual, and as long as you don't push it hard it should be fine. probably be rather similar to a detroit 4-53 in power and rpm range.

 

thanks for the replies.. I was asking about the marinization for a friend that needs a repower for a small lobster boat. Ironically, "dealwithit", it would be replacing an old 4-53 that I had rebuilt for him years ago... since I, obviously, know little of the 6.9L I was curious.. as this '86 diesel only has 68k miles on it.. it starts immediately and purrs it is actually quieter than most 7.3 powerstrokes I hear. I am aware of horror stories trying to marinize Ford gas engines, i.e. 460cid, etc. but I was hoping this might be an option... like alot of folks, money is tight and I was going to give him the mill with a compatible reduction gear and help him with the conversion and installation. Vincent

 

that should work perfectly then, and i bet it would get better milage too, and probably save about 3-400lbs too. thinking about it more and more im pretty sure it will be a pretty good canidate actually.

 

Hey did you find anything? let me know because I'm thinking of doing the same thing. Thanks

 

well the injection pump isnt designed to be at the same speed for hours on end so i would look at getting a marine one. peninsular diesel which is big into 6.2 and 6.5 diesels make marine engines and you can probably buy a pump from them. 6.2s and 6.9s are very similar and use the same injection pump


http://www.peninsulardiesel.com/WP-PENTEST/