Beyond The Pale
Join Date: Nov 2014
Thanked 29 Times in 23 Posts
Rep Power: 3
Re: Engine mount
Um, going around and randomly tightening Engine Mount bolts is Not A Good Idea. A proper Marine Mechanic should chime in here, but when the Engine/Transmission is aligned to the Propeller Shaft, Mounts can look a bit odd. But there it is- Boatbuilding isn't yet an exact Science.
The important thing is that the Propeller Shaft is aligned; if it is not, all sorts of irritations will occur, like when on Rundown, the shift in the Engine Mounts may make the Shear Pin, if the setup has one, to... Shear. That is what it is supposed to do. (If CV Joints were commonly used, which they are not, this wouldn't be a problem.)
I went through half a dozen Shear Pins on my last Boat, a decade or three back, before I figured this out- The Mechanic who had reinstalled the Volvo MD2B for the previous owner, after an unfortunate intake of Seawater, just jammed everything down tight. (That wasn't the only thing done wrong...)
Raising the Starboard Rear Mount about 3/64 of an inch, the thickness of a SS Washer, was the solution, and the Packing Gland stopped leaking as well. And I eventually installed a CV Joint, from an old Audi Fox, just in case. (This set the Propeller back around three inches, which wasn't a problem.)
I don't know about the installation on your particular Boat...
I also don't know about the installation on my current Boat; it just works, and whoever did the installation knew _exactly_ what they were doing. There is some sort of Rubber Booted Thingie going from Aft Propeller Shaft to Fiberglass. I do know that the Thingie is French, and that there is a French Manual for it, which was included in the purchase, as well as some spare O-Rings.
If I ever have problems there, I shall have to brush up on my French.
It seems to me that you need a proper Marine Mechanic, which I am not.
I just muddle through problems, and trundle through waters.
Best of Wishes;