Power Tilt Conversion

BB63QM

Petty Officer 3rd Class
Joined
Aug 4, 2023
Messages
75
I have a 1976 Mercury 850 with manual lift assist tilt. I want to switch to hydraulic tilt/trim.

According to the manual, there is a bolt on system (which replaced the port/stbd assist pistons with hydraulic pistons, and adds a pump and reservoir and hoses).
Questions:
1. Does anyone know the part number for that conversion kit (the manual is silent).
2. Is there a self-contained option? (I rather like the other units I've see, the trim pistons and a single lift piston, onboard motor and reservoir all in one unit.)
---there are a slew on the market, from used to new, but the used only say where they came from, seldom where that could go.
3. If buying a used PT unit, what ELSE do I need? (new transom clamp, plate, wire harness.), or do the units come with everything?

Pros/Cons: As I've watched a few videos and read the manual, it seems that the stock unit might be best if it can be located, as this unit uses the stock mounting hardware with just a piston swap...more hoses to deal with, but that might be better than lifting the motor off (again) to replace base-hardware.
 

jimmbo

Supreme Mariner
Joined
May 24, 2004
Messages
13,782
It would be easier to find a used Engine, up to and including1983, with the Trim System, and just transfer over the Parts
If it is on an 80hp, or 85hp 4 cylinder, or the Inline 6, it should fit.
 

BB63QM

Petty Officer 3rd Class
Joined
Aug 4, 2023
Messages
75
Thanks. If buying a used system from one of the engines described, do I just need the life hardware and switch/cable, or do I need a special yea some mount and/or tilt mount (neither none of which are sold with most salvaged systems)
 

Chris1956

Supreme Mariner
Joined
Mar 25, 2004
Messages
28,261
You need this stuff, plus the pump/reservoir. The PTT brackets bolt to the upper shock support. The top of the brackets bolt to the top mount of the PTT cylinders. The lower shock mount bolts to the lower mount of the PTT cylinders.

 
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