I bought a boat with a 1987 dt175 on it last summer. Ran terrible so after pulling the heads off I discovered water in 3 out of the 6 cylinders. Several cylinders are scored really bad. I am not sure what to do as it is kind of hard to find parts for these and I have not found a top end kit anywhere. Pistons are around $120 a piece then factor in all the gaskets and cleaning up/boring the cylinders. Does anyone have knowledge on rebuilding this motor or advice if it is worth it? I am sure I can find a merc outboard local somewhere for what it will cost me to rebuild this thing. I found a complete powerhead off of a 1998 dt 200 but I am unsure if it can replace the 87 dt175 without issue. From what I read the 175 and 200 are pretty much the same minus the carbs. Any help is appreciated. Thanks.
