How do engine couplers work?

[Beardmode]

Can someone show me how an engine coupler and intermediate shaft assemble for a volvo penta 280 to 5.0l 2 piece.
I have a late 1970's early 1908's windy daycruiser 22ft. I am removing the motor and drive to perform maintenance over winter and woul like to know what I am up against prior to disassembly. I am also considering adapting the drive to different generation of motors and am curious how couplers mount to know what my options are.

Thanks

 

[Scott Danforth]

all small block and big block chevrolets have the same bolt pattern for the flywheel housing. so you can swap anything you want in front of the PDS shaft

on your AQ drive, its actually a drive plate vs a coupler. think of a clutch disc that is bolted to the flywheel.

you still have to remove the drive first, then the motor

 

[Beardmode]

all small block and big block chevrolets have the same bolt pattern for the flywheel housing. so you can swap anything you want in front of the PDS shaft

on your AQ drive, its actually a drive plate vs a coupler. think of a clutch disc that is bolted to the flywheel.

you still have to remove the drive first, then the motor

So the driveplate bolts to the outer holes on the flywheel? And the intermediate shaft goes from the drive plate to the ujoints attached to the upper gearcase on the drive?

 

[Beardmode]

So the driveplate bolts to the outer holes on the flywheel? And the intermediate shaft goes from the drive plate to the ujoints attached to the upper gearcase on the drive?

The outer bolts I am referring to is the ones closer tk the outer diameter of the flexplate. The ones you would use to bold up a clutch to. Thanks

 

[Scott Danforth]

yes, however only 3 of the holes on a small block. 6 holes on a big block

 

[Scott Danforth]

your drive plate should look almost exactly like this, except 10 splines vs 26

 

[Beardmode]

your drive plate should look almost exactly like this, except 10 splines vs 26

Amazing!! Thank you very much. So in theory I could drill and tap any flywheel for this bolt pattern, fab up some motor mounts and install multiple different motors. Interesting.
-So my intermediate has 10 splines?
-could I purchase a driveplate for different motors that would adapt it to my 10 spine shaft?

Thanks again

 

[Beardmode]

Tonight was a productive day. Drive is off and it went well. Second time doing it.
Next is disconnect all the wiring and fuel lines from the motor. Other than the motor mounts how does the motor physically mount? Do I need to take the bolts out in the picture below? (This is a ring around the drive bellow) Or do I just pull the motor forward and out? Do I unbolt the bellhousing or pull it with it.

Thanks!!

 

[Scott Danforth]

yes, once you get the drive off and out of the way, you take those 6 clamp bolts out (you have to unbend the corners of the metal tangs). there are 3 threaded holes. you put 3 of the clamp bolts in the threaded holes and jack the clamp ring off.

you will need new rubber "donuts" when you put it back together

 

[Beardmode]

yes, once you get the drive off and out of the way, you take those 6 clamp bolts out (you have to unbend the corners of the metal tangs). there are 3 threaded holes. you put 3 of the clamp bolts in the threaded holes and jack the clamp ring off.

you will need new rubber "donuts" when you put it back together

Good morning,
Just to clarify once the ring is off the motor is pulled forward and out with the bellhousing still on the motor?
Thanks

 

[Scott Danforth]

Yes, you pull the motor and PDS housing as a unit

alignment is easy. at the 3, 9, and 12oclock positions on the PDS housing there are little tabs that you measure between there and the transom shield. as long as those three gaps are within 1.5mm (0.060") of each other your aligned