175hp Mariner?’s

[Merc 2.5]

I’ve always run amsoil hp in it and I have a gas station that has 91 octane non reformulated fuel that I feed it. The only quirk on the motor is the trim leaks down very slowly, if I trim it up half way or so and come back a few hours later it will be all the way back down... this is the 3 ram trim, can this be fixed or should I shop for a newer style trim setup?

Can u post serial # and look for single ram trim, but yes it will bolt.up

[Jmr1974]

What does the he mean when he says short tuner? Does it mean 15” mid section? I have to call the guy today. Does this seem like a fair price if everything is in good shape? He only has that one picture in the add.

[Merc 2.5]

Short tuner is bolted to adapter plates for exhaust, inside the mid, u dont neccesarily need the mid. U need to make sure u got a 2.4 and not a 2.0. Sure looks like 2.0 to me

[tlwjkw]

Attachment 467030 I found this on Craigslist,would this bolt up? It says short tuner, not sure what that means. Looks like an offshore mid, has the bracket and trim pump which is what I might need to replace anyway if I can’t rebuild mine.

same as yours... not hi perf at all.. TnT can be fixed and/or just changed out.

yours is way to original and clean to go jackin' with.. most 175's will run as good (some better) as most 200's with proper set up.. only difference is 200's have horizontal fronts and a different carb.. please don't go "hackin'" on it!..... jmo.

serial number stamped in welsh plug on top of motor maybe.. might have only "200" stamped there also.. if thats what is there then that will verify its a 175...

[Merc 2.5]

Tommy. Didnt the 2.4 175 have horizontal front?
2.0 175 vertical?

[tlwjkw]

didn't go horizontal till sometime in '89/'90 best i remember with a few vertical's still scattered.. most vertical's after "89/'90 were 2.0's i think.

[Merc 2.5]

Gotcha. I was thinkin wrong again I rekon ha

[FMP]

T-Rex...is that you??? Lol

Had to be said. Great looking Mariner

[tlwjkw]

yeah....

[Jmr1974]

same as yours... not hi perf at all.. TnT can be fixed and/or just changed out.

yours is way to original and clean to go jackin' with.. most 175's will run as good (some better) as most 200's with proper set up.. only difference is 200's have horizontal fronts and a different carb.. please don't go "hackin'" on it!..... jmo.

serial number stamped in welsh plug on top of motor maybe.. might have only "200" stamped there also.. if thats what is there then that will verify its a 175...

Thanks for the info, next time I pull it out I’ll check for that welsh plug#. I definitely don’t want to hack the motor up and really don’t plan on it, the wheels in my head are always turning tho. Next I’ll have to see if I can just fix the trim. If anybody has some pointers on that I’m all ears. Thanks to everybody else that replied to my post, all very helpfull info.