Need help with buying a new prop

Matt1021

Cadet
Joined
Jul 8, 2019
Messages
19
Spun the prop and lost it at the bottom of lake. Have no idea on pitch or any other details. Boat is a 1985 Sea Ray Seville with. 3.0 OMC motor.

Any suggestions?
 

jimmbo

Supreme Mariner
Joined
May 24, 2004
Messages
12,944
85, is it a Stringer or a Cobra?

If a Stringer (1.65:1 gears), I think a 15 would be in the ball park

if a Cobra (1.71:1 gears), A 17 would be also in the ballpark

WOT range is 4200 - 4600 rpm
 

Matt1021

Cadet
Joined
Jul 8, 2019
Messages
19
Not sure. 302sthrcom is the model listed on the engine plate. [h=2]302STHRCOM[/h]
 

jimmbo

Supreme Mariner
Joined
May 24, 2004
Messages
12,944
A Stringer would have a big ugly seal at the transom. A Cobra is easy to identify by it having two trim cylinders on the Outdrive.
 

Matt1021

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Joined
Jul 8, 2019
Messages
19
i was looking at another forum thread of someone doing a restoration on a Seville and they installed a new prop. they used a Quicksilver Black Diamond XT-14 1/2 21 Pitch. He had an Alpha 1 outdrive on his boat
 
Last edited:

Starcraft5834

Lieutenant Commander
Joined
Jun 2, 2013
Messages
1,677
I had a 1987 3.0 cuddy, A1 drive, had a 15p 4 blade on it... was the perfect fit for that underpowered heavy boat...
 

Matt1021

Cadet
Joined
Jul 8, 2019
Messages
19
Mine is a 19' bowrider. Thinking of going with a 3 blade 13.5 diameter with a 15pitch. Found a site by Solas propeller that gives me part numbers.
 

Sea Rider

Supreme Mariner
Joined
Sep 20, 2008
Messages
12,345
Whichever prop you go after will be your starter prop and then go from there dialing a prop that will make the motor to run at least middle to max wot frevs as usually loaded. It's much faster going for a spot on prop maximization from a previously tached prop or lost one than begining with a wild guess one as a starter prop.

A pity that lost prop was never tached previously to buy same or go from there..

Happy Boating
 
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