adruid
Seaman
- Joined
- Apr 3, 2014
- Messages
- 52
I have a 1984 Marathon Sunfish 2100 fishing boat w/cuddy cabin. Powered by 1996 GM Mercruiser 140/3.0L engine and Alpha I outdrive. Gear Ratio 1.98:1, The boat weighs 3600Lbs. with no passengers, add 400lbs for two. Length overall is 21’4”, beam is 8’, BWL is 6’7”, depth is @52”, FB is 32”, dead rise is 18.4*. Currently using a Michigan 031023 15.25” 15P AL prop that’s starting to get beat. I would like to replace the prop and hope to find the best match for the boat. Thinking about a four blade aluminum and would like some suggestions from people the understand props better than I do. The hull is never happy with more than 30mph running in the Pacific Ocean and fuel economy is always an issue. Looking forward to your good advice.
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