Reply With QuoteThat is very unusual for a prop to have no markings at all. Take it to a prop shop and they can measure it for you.,
Likes: 0
Thanks: 0
HaHa: 0
Trophy King II
Yamaha Prop selection
I am in the market for a new prop for a 2008 Yamaha F90TLR and teh current prop/motor has no markings stating the current DIA/Pitch.
Looking on line there are several different options. How do you know what to buy...
Options are:Any suggestions on which to start with. WOT 5500 RPM, boat is a 2008 G3 1860 center console .
Diameter Pitch Rotation Part Number 14 9 R 9411-140-09 14 11 R 9411-140-11 13.75 13 R 9411-138-13 13.5 15 R 9411-135-15 13.25 17 R 9411-133-17 13.2 19 R 9411-132-19 13.2 21 R 9411-132-21
Super Mod and 2014 Crappie.com Man of the Year
* Crappie.com Supporter
That is very unusual for a prop to have no markings at all. Take it to a prop shop and they can measure it for you.,
Fair Winds and Following Seas
Bill H. PTC USN Ret
Chesapeake, Va
Crappie.com Legend
* Crappie.com Supporter
Mine is 17x13.5. WOT is 6000 @ 41.7 GPS. G3 17, F90 4 stroke.
2018 G3 Sportsman 17
2018 Yamaha F90 four stroke
Ultra 106sv bow/console
Livescope Terrova 24v Ionic lithium batteries
Trophy King II
Trophy King II
41.7 GPS that moving so I ordered a 13.75 X 13 pitch - it I thought that didn't sound right when I made the order
Crappie Wall Hanger II
That prop is too small you need to 13.75x17 pitch. The other user wrote his pitch first and diameter 2nd.Originally Posted by Wade2131
Edit - last week you indicated your original was 13.75x13. Is this a pontoon? If you are using a 13 pitch your boat will never hit 41mph. Boat speed at 6K rpms will be like 28mph tops
Crappie.com 1K Star General
I would call Yamaha and see if that number means anything to them or call a well known G3 dealership and get their opinion.
I’ve never seen one not stamped either.
Once you buy it,it’s yours no returning it.
You can go on Yamaha’s website and use there prop selector but you still won’t know if it’s the right one.
Crappie Wall Hanger II
So now I see the bottom of your post that you have a 1860 G3. My buddy is running a 2070 Lowe (similar boat only bogger) and he just had a 2023 Suzuki 90 put on it. He is running a 16 pitch power tech prop from his old 75hp and he is hitting his rev limiter. He is going up to a 17". Based on this I would say NO WAY you were running a 13 pitch prop.
Trophy King II
Well I took the old prop to the Yamaha dealer, and it is 13.2 diameter by 19 pitch. So I ordered a Mercury prop with the hub kit to prevent any future prop shaft damage. "BOAT" sure means "bust out another thousand", cause I spent $1,049 for lower unit repair and new prop
Thoses were some expensive crappie that day lol
Crappie Wall Hanger II
A 90 will generally swing a 15-21 pitch depending on the size of the boat.
My boat is pretty small for a 90hp (17' Tracker) and has a 21, which is almost too much. A 19 would be better if I ever ran heavily loaded.
