Engine location, good or bad idea ?

[wayoutthere]

Because of lack of storage and no shop with a permanent crane i have to try and be creative and it has to done single handed.

Only want to set up the crane 1 time.

I bought this engine/pylon mount because it would solve some assembly unknowns, and it does but with other problems in the mix.

1. Its not sqaure, and its sprung inward at the back end.

2 the only reliable engine mounting holes are the vertical rears and the horizontal fronts.

(these are marked with arrows on blue tape )


i want to locate the engine mount so the 1. dog box hatch can get glassed, 2. the pylon shoe can get bedded and this project can keep scratching along.


heres the idea ;

measure from the centerline of the rearmost engine mount hole to the center line of the flange on the transmission.

install the strut, shaft and prop so there is a 1/2 inch between the prop and strut.

shim up the shaft in the boat so its centered pretty good in the strut bearing (should be pretty close to finish).

with a big sqaure on the shaft and straight edge across the boat measure and mark the mount to flange measurement taken earlier.


now, since the engine pylon mount is not sqaure, using either the left or right side forwardmost mounting hole (mount to stringer)

marked A on blue tape (B just isnt pictured but you get the point)

drill 1 hole either a or b and thats it.


from there, the dog box can get located on the floor and bonded together, the groove can get cut for the pylon so the the whole hatch opens up, and all the glass and finish work can happen so the engine can go in.


Once the boat is ready for the engine ; bolt engine to mount set in boat, locate that 1 hole and bolt it in,

using clamps and the engine mounts,

get the mount all sqaured up test fit the shaft and prop,

mark remaining mount to stringer holes pull engine,

drill holes and swab with resin let dry overnight,

and put engine back in boat boom crane only set up once.

[wayoutthere]

except for being cocked and throwing off the most important measurement needed, every other dimension was inside an 1/8th so I think it'll fall inside a 1/4 inch overall. Figure the pylon shoe can get bedded after the engine test fit just in case.

any opinion, on target ? way off ?

[SilentSeven]

Sadly, not savy enough to offer an opinion what what you outline seems reasonable enough. What type of boat was the engine / plylon frame removed from?

[wayoutthere]

The engine/pylon mount is from an early 80's ski nautique.
2 people had a mount, the first person who responded to my post, his mount had no pylon and after stating i wanted it another member chimed in and advised it won't work because it was from a different model correct craft.
the second person had the mount and pylon from a ski nautique with the ring and finger still intact so that's the one i ended up with.

otherwise i buy from and/or sell to the first person who speaks up.

[wayoutthere]

All centered and lined up on the marks, the dummy shaft hit its mark, convinced enough to drill 1 hole to locate mount.
believe log will have to be re-bed and strut will need adjustment, but engine and driveline has to be centered.

dummy shaft was marked on the high side and slid in not rotated and thats where it landed engine will be centered then we'll see.
for now the hatch/dogbox can get glassed together.