volvo duo prop install

[boathog]

I have a 28 bayliner flybridge with a 350 chevy and a 280 volvo single prop drive. I just got a duo prop (dp-d1) 1.95:1 lower and would like to try it to get more power ( the boat is a pig) not sure if that ratio is good or what size props to use . I hope it will bolt up . Anyone know ?

 

[ron-bc]

Re: volvo duo prop install

Here is a PDF file link from volvo that shows the different duoprop setups VS engines, etc. A nice read...
This may be what you are looking for. Good luck!
Ron

www.volvo.com/NR/rdonlyres/2D2F5550-D247-4F3D-BE18-B8D3E71BEAA6/0/Prop_guide_2005_2006.pdf

 

[Don S]

Re: volvo duo prop install

You actually lucked out and found the proper gear ratio for a 350. If you are looking for prop numbers. a B-4 (aluminum) set would be a good starting point. What you are looking for is the proper WOT (Wide Open Throttle) rpm for your engine.

BTW, of course a 28 foot boat is a pig with a little engine. What did you expect?
To move big boats, you need big horse power and torque. The DP will help, but don't expect to be pulling a bunch of skiers or wake borders at 45 mph.

 

[boathog]

Re: volvo duo prop install

You actually lucked out and found the proper gear ratio for a 350. If you are looking for prop numbers. a B-4 (aluminum) set would be a good starting point. What you are looking for is the proper WOT (Wide Open Throttle) rpm for your engine.

BTW, of course a 28 foot boat is a pig with a little engine. What did you expect?
To move big boats, you need big horse power and torque. The DP will help, but don't expect to be pulling a bunch of skiers or wake borders at 45 mph.

 

[boathog]

Re: volvo duo prop install

thanks for the help, thoughts and ideas . Im going to give it a try, I just need to try some props .

no skiing , just hope to keep it on plane !!!!!