jcupo6
Chief Petty Officer
- Joined
- Jul 13, 2009
- Messages
- 512
I recently changed motors. The boat had a 140hp mercruiser with a cracked block. I replaced it with a 120hp merc but kept the same prop, couldn't afford to purchase a new one at the time. I'm ready now!
1. Looking for a good overall prop to gain some speed and rpms. I mainly use the boat for fishing, but might pull a tube here and there.
2. Currently the boat has a 19 pitch aluminum merc prop. Sorry, I'm not sure what model. It's pretty old but in good condition, maybe a black max?
3. The boat currently tops out between 26-30 mph at 2900-3000 rpm with an average load. She should be running around 3800-4400 rpms.
4. Engine is a 1978-1982 120hp merc with a 1 year old SEI drive.
5. Boat is a Aluminum 22 foot 1973 Starcraft Holiday. With no fuel, gear, or passengers the boat weighs around 1600 pounds. I usually run with 1-2 passengers.
Since the current prop was installed for the 140hp motor, I assume I can get more rpm's and speed with a prop change. Thanks in advance for your help!
1. Looking for a good overall prop to gain some speed and rpms. I mainly use the boat for fishing, but might pull a tube here and there.
2. Currently the boat has a 19 pitch aluminum merc prop. Sorry, I'm not sure what model. It's pretty old but in good condition, maybe a black max?
3. The boat currently tops out between 26-30 mph at 2900-3000 rpm with an average load. She should be running around 3800-4400 rpms.
4. Engine is a 1978-1982 120hp merc with a 1 year old SEI drive.
5. Boat is a Aluminum 22 foot 1973 Starcraft Holiday. With no fuel, gear, or passengers the boat weighs around 1600 pounds. I usually run with 1-2 passengers.
Since the current prop was installed for the 140hp motor, I assume I can get more rpm's and speed with a prop change. Thanks in advance for your help!