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TOPIC: 4788 manual best prop for same

4788 manual best prop for same 02 Sep 2017 14:22 #1

  • Comet
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Need fin is 4788 manual and best prop guide current 24x21. Starting storm project
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Ciera
42 amerasport
49 grand banks
42 grand banks
10 meter Trojan
34 Hunter
4788 2001

4788 manual best prop for same 02 Sep 2017 14:41 #2

  • smitty477
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Comet wrote: Need fin is 4788 manual and best prop guide current 24x21. Starting storm project


Owners manual - go to this site and put in your boat year and model and download the manual...
bayliner.com/owners-manual/

Props - the correct props will be the ones that allow you to reach full rated rpm plus 3-5% as a brief test at WOT when fully loaded on a hot and humid day.
Dependent upon your the exact engines in your boat, your boats weight and loading and even if you are in salt or fresh water props will vary.

Welcome and good luck with your new boat

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Northport NY

4788 manual best prop for same 03 Sep 2017 16:21 #3

  • vinomaker
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Thanks for the link to the manuals. I wish I had this a few years ago.

I have 2001 4788 with Cummins 370s. The last couple years I had my 24" props tuned to 22" on port and 21 1/2" on starboard and I was getting just to 3000rpm at WOT.

This summer at WOT I was getting 2905 rpm on port and 2965 on starboard.

I just had them re-pitched to 21" on both props. I will be taking it out for a test later this week and hopefully will get over the 3000+ rpm mark.
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Cheers!
Vinomaker
Jerome Robbins
Rear Commodore, Fidalgo Yacht Club
Anacortes, WA
2001 Bayliner 4788
Twin 370 Cummins
1994 Bayliner Ciera 2855 454 V8-7.4L
1994 Bayliner Classic 2252 V6-5.2L

4788 manual best prop for same 10 Sep 2017 17:27 #4

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The props are now both pitched at @ 21".
Out for a cruise and did a WOT test.
Port 3050 rpm and starboard 3060 rpm.

Taking 1" off port and 1/2" off starboard accomplished desired results!

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Cheers!
Vinomaker
Jerome Robbins
Rear Commodore, Fidalgo Yacht Club
Anacortes, WA
2001 Bayliner 4788
Twin 370 Cummins
1994 Bayliner Ciera 2855 454 V8-7.4L
1994 Bayliner Classic 2252 V6-5.2L
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