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Volvo Penta Prop Help!!

Discussion Forum at MarineEngine.com » Volvo Penta Gas » Archive through June 26, 2009 » Volvo Penta Prop Help!! « Previous Next »

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Jeremy Hodges
Member
Username: nookiraq

Post Number: 5
Registered: 04-2009
Posted on Tuesday, June 23, 2009 - 05:35 pm:   Edit Post Delete Post View Post/Check IP

Hello, I'm new to boating and just purchased a boat. I am needing a prop for it and I have no Idea what size or what it would be called or where to look. The boat is a 1993 Welcraft Excel 23FT closed bow, it has a 5.7L volvo Penta 572/PS, The numbers on the engine are 4100141428 which I believe is the SN#. The other number on it is the product number I believe- 868518. The drive is a Volvo Penta SP CO Trim. It has 17 splines for the prop. Any help would be great.
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Bert
Member
Username: bschip43

Post Number: 97
Registered: 12-2007
Posted on Tuesday, June 23, 2009 - 07:30 pm:   Edit Post Delete Post View Post/Check IP

Try this site out...http://turningpointpropellers.com/
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J.C.H.
Member
Username: ruckus3313

Post Number: 98
Registered: 10-2008


Posted on Wednesday, June 24, 2009 - 12:39 pm:   Edit Post Delete Post View Post/Check IP

Jeremy,

you can find propellers everywhere on the internet including here. You can also try propmd.com or marinepartsexpress.com as they offer decent pricing...As far as size and pitch go, it is all a trial experience. You want a prop that makes the boat come up out of the water as well as having proper rpm at WOT... If you boat seems sluggish off the start and does not reach redline at WOT you need to decrease your props pitch.

Examples:
If your current prop is a 14x19 and it does not reach WOT(wide open throttle) RPM's or seems very sluggish coming out of the water i would suggest trying a 14x17 propeller. if your current prop is a 14x19 and it over revs the engine(too much RPM) i would try a 14x21 propeller. Like i said it is all a trial and error experience with propellers.

also,

go to www.marinepartsexpress.com and click on propeller basics. It kinda desribes how a propeller works and what size and pitch differences are. It breaks down on how to prop your boat based apon engine size, weight, HP etc... good luck and tight lines!!!
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Jeremy Hodges
Member
Username: nookiraq

Post Number: 6
Registered: 04-2009
Posted on Wednesday, June 24, 2009 - 06:58 pm:   Edit Post Delete Post View Post/Check IP

Bert, and J.C.H,
Thanks for the info. it is very helpful and I now have a better understanding of how the prop actually works. Thanks, Jeremy

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