Difficulty aligning engine to get couplers to mate up flush

[tbrookster]

Hello,
I recently bought my 330 Sundancer and wanted to try to reduce the noise and vibration so I checked the prop shaft alignment and found it off. I was able to raise the engine mounts and get the vertical alignment dead on but have a .008" gap on the starboard side of the coupler consistently, even when I rotate the shaft. I have tried adjusting the Hurth V drive mounts up to 1" both left and right but the .008" gap never changed but sometimes the shaft would bind. Does anyone have any recommendations ?

 

[Bt Doctur]

First center the shaft in the shaft log
Adjust front and rear mounts as close as possable. A poor man`s measuring device is to put 4 pennies between the flange and coupler. Snug the bolts just enough to retain the pennies,
Rotate the shaft, if a penny falls away, shaft alignment is still off.
By feeler gauge that I believe is .003 per inch of flange diameter . measure between the bolts.
To adjust left or right , loosen the pinch bolts in the motor mounts not the adjusting nuts.

 

[Bt Doctur]

4.08 mark
https://www.youtube.com/watch?v=UEqzJgCz_6w

 

[tbrookster]

Bt Doctur,
Thanks for the reply,
When I was attempting this alignment, I loosened all four bolts in the coupler and adjusted the engine mounts until I had equal space at 12 & 6 o'clock but touching at the 3 o'clock and a .008" gap at the 9 o'clock position. Next I loosened the pinch bolts and slid the engine 1" to the left, measuring the gap and rotating the shaft every 1/8" with no change in the .008" gap. I then repeated this same procedure until I had moved the engine 1" to the right past the original position with no change in my .008" gap at the 9:00 o'clock position. When the engine was over 1" in each direction the shaft was in a bind. Any ideas what I am doing wrong ?

 

[Happy Hour IV]

If u are moving the entire engine left/right u will pinch the coupler but not greatly changing the spacing between flange sides. You need to move the mounts so the engine rotates in the bay

 

[tbrookster]

Since there are only four mounting points and the two on the engine only have vertical adjustment, how else can I accomplish rotation ?