Iboats Boat and Motor Info
1. Year, make and model of boat
1987 Rinker V180
2. Length, width and base weight of boat, look for boat decal on back of boat
17'6", 6'6", 1900lbs base
2a.What is the recommended HP for your boat
130 hp
3. Number of people and gallons of gas normally on boat
3 adults, 2 children, 20 gallons of gas
4. What do you use the boat for
Skiing, Cruising, All watersports
5. Is it a Deep Vee and if so how many degrees of deadrise
Vee Hull
6. Year, make and model of motor
1987, Mercruiser, 3.0 4 cyl
7. HP and gear ratio of motor IMPORTANT
130HP, 1.98 Ratio
If you don?t know the ratio, you need to pull the plugs out and put a piece of tape across the prop and the lower unit and then cut it between the prop and the housing and turn the motor until the tape lines up with each other, it is easier if two people do this, so one can watch the prop while the other counts the revolutions of the motor
8. Manufacturer?s recommended Wide Open Throttle (WOT) range
4200-4600
9. Anti-ventilation Plate height above keel of boat if it is an outboard in inches
10. Is it a bass boat or does it have a pad bottom
11. Does it have a hydrafoil, dolefin or trim tabs
Hydrafoil
12. Make, model, diameter, pitch and whether SS or aluminum prop
Aluminum Prop, Make: Michigan, Here are all the numbers on it: 129A PM 219 CUP 299L
13. WOT RPM and speed from your current prop and how much gas and how many people were in the boat for the test data and is the speed by GPS. If you do not have a tach you can buy a Tiny Tach for $ 50
WOT: 4500 felt like there was a little more but I did not want to push it any higher, 35 MPH, 20 Gallons of gas, 2 People. Speed by GPS
14. Are you at sea level or a higher elevation, give us the elevation in feet
Sea Level
15. Has your motor been tuned up lately and have you checked that the carburetor butterfly is opening all the way, checked compression, and looked at the plugs and checked spark, all of the foregoing could be the reason your prop is not attaining full RPM
16. How long has this prop been on the boat and why, at this time, do you think it is the wrong prop
Came with the boat when I bought it. Would like to go to a 4 Blade Prop. The prop is starting to slip so I need to get a new one.
17. Does the prop show any damage that you can see
No
18. What problems are you trying to cure or what are you looking for the boat to do that it is not doing the way you think it should or to your expectations
I would like a little more cruising Speed and a good hole shot for skiing
19. If you are trying to attain a better cruising speed and fuel savings or trying to attain a faster speed I will want you to take your boat and run it with 1 or 2 people and give me the RPM and speed readings starting at 3,000 RPM in 500 RPM increments all the way to WOT.
All I would like to do is gain a little more speed and have a good hole shot for skiing. I have read that a 4 blade also can help you plane at a lower speed.
1. Year, make and model of boat
1987 Rinker V180
2. Length, width and base weight of boat, look for boat decal on back of boat
17'6", 6'6", 1900lbs base
2a.What is the recommended HP for your boat
130 hp
3. Number of people and gallons of gas normally on boat
3 adults, 2 children, 20 gallons of gas
4. What do you use the boat for
Skiing, Cruising, All watersports
5. Is it a Deep Vee and if so how many degrees of deadrise
Vee Hull
6. Year, make and model of motor
1987, Mercruiser, 3.0 4 cyl
7. HP and gear ratio of motor IMPORTANT
130HP, 1.98 Ratio
If you don?t know the ratio, you need to pull the plugs out and put a piece of tape across the prop and the lower unit and then cut it between the prop and the housing and turn the motor until the tape lines up with each other, it is easier if two people do this, so one can watch the prop while the other counts the revolutions of the motor
8. Manufacturer?s recommended Wide Open Throttle (WOT) range
4200-4600
9. Anti-ventilation Plate height above keel of boat if it is an outboard in inches
10. Is it a bass boat or does it have a pad bottom
11. Does it have a hydrafoil, dolefin or trim tabs
Hydrafoil
12. Make, model, diameter, pitch and whether SS or aluminum prop
Aluminum Prop, Make: Michigan, Here are all the numbers on it: 129A PM 219 CUP 299L
13. WOT RPM and speed from your current prop and how much gas and how many people were in the boat for the test data and is the speed by GPS. If you do not have a tach you can buy a Tiny Tach for $ 50
WOT: 4500 felt like there was a little more but I did not want to push it any higher, 35 MPH, 20 Gallons of gas, 2 People. Speed by GPS
14. Are you at sea level or a higher elevation, give us the elevation in feet
Sea Level
15. Has your motor been tuned up lately and have you checked that the carburetor butterfly is opening all the way, checked compression, and looked at the plugs and checked spark, all of the foregoing could be the reason your prop is not attaining full RPM
16. How long has this prop been on the boat and why, at this time, do you think it is the wrong prop
Came with the boat when I bought it. Would like to go to a 4 Blade Prop. The prop is starting to slip so I need to get a new one.
17. Does the prop show any damage that you can see
No
18. What problems are you trying to cure or what are you looking for the boat to do that it is not doing the way you think it should or to your expectations
I would like a little more cruising Speed and a good hole shot for skiing
19. If you are trying to attain a better cruising speed and fuel savings or trying to attain a faster speed I will want you to take your boat and run it with 1 or 2 people and give me the RPM and speed readings starting at 3,000 RPM in 500 RPM increments all the way to WOT.
All I would like to do is gain a little more speed and have a good hole shot for skiing. I have read that a 4 blade also can help you plane at a lower speed.
