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nluchau

15 horse Evinrude 2st

5 posts in this topic

Can someone tell me what is the correct size prop for this motor?

I have a '96 Evinrude 15 horse with electric start. Currently the prop on there reads 9.5-12.5

Thanks for any advice.

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What you have there is a 9 1/2 diameter, 12 1/2 pitch.

Does it run fine like that? Thats the biggest prop made to fit that engine.

I've got a 9 1/4 dia. 8 pitch on my 15 johnny for the 14 ft duck boat if that helps you out.

It all depends on whether or not you are able to achieve max rpms at WOT with out over-reving.

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More speed is what I'm looking to achieve. It seems to run well at wot with that prop but speed is an issue but I think thats all Im gonna get out of that motor. Now if there was a simple way to determine how many rpm's I'm pushing at wot...

I think I'll just have to live with it as is. Thanks for the info Bruce!

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The only way is with an inductive tach that reads off one of the plug wires.

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My 1988 15HP evenrude stock prop is a 9.5 X 10

If ya know anyome with a dwell meter I think you can check RPMs with it,unless the newer motors are different than my 88, I also spose dwell meters are outdated now.

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