Join Date: Jan 2009
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If, otoh, you're the adventurous sort . . .
. . . (or stupid?) you might consider messing with it.
Admittedly, you might want to check back with me after a year or more my actually having run the thing, but I just put new rings, a head gasket, and a head cleaned up by my local machine shop (glass-beaded, resurfaced, valves ground) into my Yanmar 2QM15. Runs like a champ. (And what a feeling of accomplishment!)
And I've dis- & re-assembled the injector pump & injectors for a good cleaning. In fact, I used better rods & pistons from a 2nd engine (it has a bad head) that was given to me. And combined the best of the rod bearings from the two. A real Frankenstein's monster, but hey -- the price is more-like-right than that quoted for either a professional rebuild or a new engine.
Now, I'm not going offshore, nor am I running excursions, nor patrolling the Columbia bar, etc, so I'm thinking I have the latitude to try some DIY approaches to things. (Apparently, I have more time than I can cope with, as well!) It's nice that the engine is small enough so working on it has been (almost) a pleasure, and given that I'm trying only to improve a few of the tolerances in a 30-year-old chugger, I figured I could hardly miss. (At this point, it appears that I may have been right.)
Whatever, it sure feels good to have some sense of what's going on in there . . .