Prop Size for Crealock 37 w Yanmar 4JHE - SailNet Community
LinkBack Thread Tools
post #1 of 1 Old 07-19-2010 Thread Starter
Senior Member
Join Date: Jun 2006
Location: San Diego
Posts: 186
Thanks: 0
Thanked 9 Times in 9 Posts
Rep Power: 11
Prop Size for Crealock 37 w Yanmar 4JHE

A couple of years ago I had to re-power Crazy Fish and replaced the Yanmar 4JHE that was originally installed on the boat in 89 with a new Yanmar 4JH4E.

The old engine generated 44 HP max and the new one generates 55 HP max. The factory currently is installing a 39 HP engine.

The boat is currently under-proped with its 3 bladed prop. I was wondering if anyone knows what the proper sized 3 bladed prop would be ?

And the boat needed to be re-powered when Baja Naval in Ensenada reinstalled the transmission (which had frozen) with the powerplate backwards. The engine ran but it put a lot of pressure on the engine bearings and after about 12 hours of total runtime the bearings seized.

Marc Hall
Crazy Fish, Crealock 37 Hull 207
MarcHall is offline  
Quote Quick Reply Share with Facebook

Quick Reply

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now

In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Similar Threads
Thread Thread Starter Forum Replies Last Post
Fuse size for a Yanmar 2GM20F Dave D Electrical Systems 2 07-15-2010 10:36 AM
Prop Size for Perkins 4-108 KeelHaulin Gear & Maintenance 6 11-22-2009 03:58 AM
Good Prop Size for Express 30 wstewart Announcements and Suggestions Box 1 02-10-2007 01:38 PM
Prop for Morgan OI w/ Yanmar 3GM30F cwarwick Gear & Maintenance 1 11-16-2004 01:17 PM
Choosing the Right Propeller Sue & Larry Gear and Maintenance Articles 0 02-04-2003 07:00 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome