Location of tilt and trim pump

xxtavixx

Cadet
Joined
May 6, 2016
Messages
9
Hello everyone!

I'm finally looking to install my tilt/trim pump for a 50hp mid 80s mercury. the tilt/trim pump does not really "fit" anyone in the rear of the boat, but it would fit beautifully under the front bow (approx. 10 feet away).

I cannot imagine this is a good idea, but I'm really not sure. I would have to run lines that are at least twice as long as the factory lines.

The only other way I can mount this is to take up some of my deck space in the rear - not that this will ruin my life, but the total boat is 15' so it's not like I have a lot of open deck space to start with.

Another solution would be to see if I can find a "shorter" tilt/trim motor. The one that I have is VERY tall

Thanks for any thoughts!
 

Chris1956

Supreme Mariner
Joined
Mar 25, 2004
Messages
28,516
I would think that having custom hydraulic lines made would be very costly. I think they would work just fine, however. I was able to stuff the PTT pump under the gunwale of my 16' speedboat. I would think you should be able to do the same, as the speedboat was very low profile.
 

igotit

Petty Officer 2nd Class
Joined
Oct 30, 2015
Messages
134
Some info that may or may not help you.
Why not use a standard merc/mariner power trim unit that fits between the mounting brackets.

I have a mid 80s 35 merc and a 96 40 mariner magnum.
Both mid sections and mounting bushings are identical.
The complete 40 mariner mounting bracket,bushings and power trim unit is a direct bolt on to the older merc midsection.

My 35 merc had old style mounting system,power trim wasnt available.
But my 96 mariner system fits right on.
35-60 merc from 80s-late 90s are all interchangable mid section,lower units,mounting brackets.
Just different powerheads,different cowlings,different props.

Those parts can be had cheaply.

I have a 4cyl 40 magnum powerhead complete going to waste in my garage.its a 50 yamaha powerhead with 40 hp carbs.
Torqy lil engine.
Matbe its time to sell.
 
Last edited:

xxtavixx

Cadet
Joined
May 6, 2016
Messages
9
Thanks folks,

I don't know too much about this, but...so long as I find one that is rated to handle it...and has the same style pump connections, would I be able to use a smaller unit? or perhaps one that is "wide" rather than tall? I imagine the wiring is going to be simple. Positive, negative to power the pump. Then wiring a two way momentary switch?

Mine has 4 lines, two smaller and two larger and are fitted to the bottom of the pump (increasing the height another 2.5".
 
Top