I have a 200 hp ocean pro and it has a 14 1/2 x 19 alum prop. My dad has a 14/1/4 x 21 stainless steel prop off an old 225 ocean pro(i think) and i want to know if it will work on my motor. Will it? any input would be appreciated. thanks.
The prop hub will be the same. You will only need to make sure the engine rpm is correct at wide open.
Iain Pelto
Sea Hunt Triton 160 w/ 90 ETEC “JB3”
Native Manta Ray 14
Thanks Iain. So, should I get it up to wide open with the old alum prop, change props and get it W/O w the new ss prop, then make sure that the rpms are the same at wide open with both props? If there is different of better way I am all ears. I know a good bit about boats but little about motors so I really appreciate the help.
Every engine model has a recommended wide open speed range. Look up your model on the web and find the that information. The recommended rpm with have a range that is fairly large; like a 500 to 1000 rpm spread. For best performance and engine durability you will want to be in the upper part of that range. For example, if the range is 5000-6000 rpm, you want to be at leaset 5500 at wide open while trimmed appropriately and the boat loaded with the expected amount of people and gear.
Iain Pelto
Sea Hunt Triton 160 w/ 90 ETEC “JB3”
Native Manta Ray 14
the 21 will have around 400 less rpm than the 19. make sure the 19 hits the upper end of ur range before trying the 21
When changing pitch with the same model of prop, 1" of pitch change up or down with generally give you 100 rpm respectively. When going to a different model, number of blades, or aluminum to SS and vise verse, you can not make those assumption until you baseline the new prop.
Iain Pelto
Sea Hunt Triton 160 w/ 90 ETEC “JB3”
Native Manta Ray 14