USA_boater
Petty Officer 1st Class
- Joined
- Jul 31, 2018
- Messages
- 275
Bought a used '04 Four Winns Horizon 180 w/ 4.3GL a couple years ago and it came with the factory 3-blade installed and a spare 4-blade Quicksilver was given with the purchase that has never been used. The OEM prop is a 14.25x23 apparently (I assume it is the OEM prop), but the 4-blade is a 14x20. The OEM specs are 4600rpm max on this motor. The RPM gauge is broken but it has run good for 2yrs including some WOT runs and I suspect it is right where it needs to be w/ the 3-blade. However, I take several people out and gear and I want the power & potential fuel savings of the 4-blade (I read it can save fuel when towing and at cruising speed?)
1.) Will the change from 23 to 20 be too much for the RPM's?
2.) When changing props, is it ever okay to use a different size such as going from 14.25 to 14? Can I do this if I have the right pitch?
I would really like to be close to the same speed as I can without going over the RPM max and from my limited research, I'd need to keep same size and just drop 1 size in pitch (not even sure if they make a 22 pitch for this outdrive?)
Thanks for your help fellas!
1.) Will the change from 23 to 20 be too much for the RPM's?
2.) When changing props, is it ever okay to use a different size such as going from 14.25 to 14? Can I do this if I have the right pitch?
I would really like to be close to the same speed as I can without going over the RPM max and from my limited research, I'd need to keep same size and just drop 1 size in pitch (not even sure if they make a 22 pitch for this outdrive?)
Thanks for your help fellas!