Cruisers Forum

Join CruisersForum Today

Thread Tools Rate Thread Display Modes
Old 26-03-2008, 12:47   #1
Registered User
wantokex's Avatar

Join Date: Jan 2008
Posts: 32
repowering, proper prop sizing?

I have been offered a good price on a 6 cyl 120 hp Lehman diesel motor to replace my 4 cyl 80 hp Lehman for my newly purchased mess of a 72 gulfstar 36 motor sailer. what is the proper way to figure out the right prop size and pitch for the motor?

wantokex is offline   Reply With Quote
Old 26-03-2008, 13:14   #2
Moderator Emeritus
Pblais's Avatar

Join Date: Mar 2003
Location: Hayes, VA
Boat: Gozzard 36
Posts: 8,700
Images: 15
Send a message via Skype™ to Pblais
You can go to any decent prop shop and give them the numbers of the engine and transmission. They can take into consideration of the hull shape and that it is a sail boat to compute what should be the proper pitch and diameter based on the desire for a two blade or three blade prop. The combo of the engine and transmission are the key numbers needed.
Paul Blais
s/v Bright Eyes Gozzard 36
37 15.7 N 76 28.9 W
Pblais is offline   Reply With Quote

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Repowering questions? Bombay77 Engines and Propulsion Systems 8 15-01-2008 11:37
Proper Prop Size SkiprJohn Propellers & Drive Systems 16 19-09-2007 00:49
repowering with a chinese diesel viking69 Engines and Propulsion Systems 45 11-08-2007 13:31
repowering emeraldsea Engines and Propulsion Systems 8 20-07-2007 23:28
Repowering an Islander 36 Charlie Engines and Propulsion Systems 8 21-03-2006 13:31

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 20:44.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.