I live in St. Louis but will travel. Trying to solve an ongoing issue that shows its face with engines in boat that's been ongoing for 3+ years . Any references would be much appreciated!

Sounds like a good way to break a drive

Lets hope not. I don't need to run the piss out of it to find what I'm looking for. But this will save months worth of water testing.... maybe longer :/

Give this company a call and see whom may own one in your area:
http://www.dynomitedynamometer.com/p...arine-dyno.htm

You might try Grand Sport Center in Illinois, I think they hooked my buddies boat up to one there when he bought it.

Mel Riggs, Riggs marine in Wisconsin has a prop shaft dyno.

Make sure the dyno setup has a large enough water supply for the motor.

what would be unltimately cool would be a in boat dyno that has a shaft that goes directly into the coupler

I always wondered why nobody took a propshaft type dyno and modified it to slide through into the gimbal/coupler once you pulled the drive off.

Sounds like a project for you Steve, I care not to remove my dyno cell and make it portable.....