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Old 05-29-2018, 09:53 AM   #1
Join Date: May 2018
Posts: 12
Default Propeller help


I have aMaxum 1900SR tha i need to change my engine.
my earlyer had a 4,3 with 180 or 190hp, i will now put in a 4,3 MPi
with 220hp, and wonder about the pich on propeller.

Anyone here who has same boat, with same engine and can give me a recomendation

Stein Torbergsen

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Old 05-29-2018, 11:19 AM   #2
mmwjr's Avatar
Join Date: Feb 2012
Location: Essex, Maryland
Posts: 7,604

I would stay with your current propeller as I doubt a change is required. Once repowered verify it is achieving its proper WOT rating.

1997 2400 SCR
5.7 Vortec / Bravo 2
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Old 05-29-2018, 02:52 PM   #3

Join Date: Apr 2008
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Unless you changed the gear ratio in the drive, you would want to stay with the same propellor. The engine at a specific RPM will spin the prop at the same relative rotation regardless of how much HP you have. It's like driving on the highway. The same sized (diameter) tire will rotate the same number of revolutions at 65mph whether the care has 100 HP or 600 HP.
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