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Old 06-17-2020, 08:25 AM   #1
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I have 2001 1800sr and my prop got dinged up looking to buy a new 1 and was wondering what would be best I do a lot of tubing it has 4.3 mercruiser alpha 1
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Old 06-17-2020, 01:14 PM   #2
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What is the size, pitch and number of blades on the prop you have?

What is the Max RPM at Wide Open Throttle??
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Old 06-17-2020, 02:31 PM   #3
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It has 3 blades and its 1423p. Max rpm 4400-4800. Blade number and size. Pitch are rite I'm not sure on the wot still new
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Old 06-19-2020, 12:50 PM   #4
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Quote:
Originally Posted by Phillipf View Post
It has 3 blades and its 1423p. Max rpm 4400-4800. Blade number and size. Pitch are rite I'm not sure on the wot still new
I was asking what the max RPM is that you reach at WOT. All Mercruiser engines have a max RPM range of 4400 - 4800. The question is, are you reaching that range or not? That is the first step in determining how to properly prop the engine.

You can use the Mercury prop calculator as well, though I wouldn't recommend blindly buying a prop without getting a baseline for your boat (based on load) first.

https://www.mercurymarine.com/en/us/...or/#!/step-one
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