1987 Mariner 175

[jakejake]

Re: 1987 Mariner 175

Are you talkin' about a small "weep" hole or a regular hose bib? If its tha small weep hole (maybe 1/8") tha poppet is screwed up! Comp. checked right and 100 or less its still time ta do something with it............

When you say "it's time to do something with it" what are you referring to? I'm assuming you are saying a rebuild. At this point I'm not sure a 28 year old outboard is worthy of the expense of a rebuild. Would you rebuild it or simply scrap it and replace it?

 

[jakejake]

Re: 1987 Mariner 175

Thanks everyone for the information. I need to go back to my original question to see if anyone can advise me on that. The fact that I have DIFFERENT water pressures at different places in the engine and the fact that this just happened all at once keeps me coming back to the thought that I might have a blockage somewhere in the engine. Something seems to be restricting the water flow. Of course this is coming from a perspective with very limited knowledge of how these engines are designed. I've never had the heads off of an outboard. If I remove the heads will it give me enough access to the water flow areas of the engine to verify if there is a blockage? Can this engine be backflushed to try and clear any blockage?

 

[racerone]

Re: 1987 Mariner 175

Remove the heads and have a look at water passages.-------Now on a salt water motor there may be issues with getting the bolts out.

 

[wired247]

Re: 1987 Mariner 175

When you say "it's time to do something with it" what are you referring to? I'm assuming you are saying a rebuild. At this point I'm not sure a 28 year old outboard is worthy of the expense of a rebuild. Would you rebuild it or simply scrap it and replace it?

Of course a 28 year old outboard is worth the expense of a rebuild. If they made something that was "better" than that 28 year old motr then that would be a valid statement. They make motors that get better gas mileage and are much heavier but they cost $10,000 if you get them on sale and good luck servicing them yourself. $2000 will get you everything you need for a through rebuild and when its done ...voila... you have a "new " motor. That Mercury V6 was the pinnacle of outboard motor development. Everything that came after was just over complicated and compromised for government regulations. It is the small block Chevy of the outboard world.

 

[racerone]

Re: 1987 Mariner 175

People with lots of money and no time rush out to buy new motors.------These new motors are difficult to repair yourself and dealers are busy even at $120 / hr----Older motors are reliable.

 

[jakejake]

Re: 1987 Mariner 175

Of course a 28 year old outboard is worth the expense of a rebuild. If they made something that was "better" than that 28 year old motr then that would be a valid statement. They make motors that get better gas mileage and are much heavier but they cost $10,000 if you get them on sale and good luck servicing them yourself. $2000 will get you everything you need for a through rebuild and when its done ...voila... you have a "new " motor. That Mercury V6 was the pinnacle of outboard motor development. Everything that came after was just over complicated and compromised for government regulations. It is the small block Chevy of the outboard world.

Thanks for this insight wired247. This makes me feel much better. I didn't want to throw good money after bad if I could prevent it. I am planning on purchasing a newer boat/motor at some point in the future but wanted to try and get a couple more years out of this one if I could. Thanks for all the information.