Need help with buying a new prop

[Matt1021]

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]

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]

Not sure. 302sthrcom is the model listed on the engine plate. [h=2]302STHRCOM[/h]

 

[jimmbo]

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]

it would be a stinger.

 

[Matt1021]

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

 

[Starcraft5834]

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]

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]

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