Universal M30 Alternator Upgrade - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > On Board > Gear & Maintenance > Engines > Diesel
 Not a Member? 
  #1  
Old 07-21-2011
Junior Member
 
Join Date: Jul 2011
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
NCTim is on a distinguished road
Universal M30 Alternator Upgrade

Hi, I am new to SailNet and this is my first post, so I hope I am doing it right! I recently bought a Cabo Rico 34 which has the above diesel and a standard alternator. I am planning extensive cruising and am in the process of upgrading batteries, battery charger, adding solar, etc. As part of this upgrade I want to replace the alternator with a high output 90-100 amp one. I am getting mixed messages from local mechanics about doing this. Has anyone on the forum done this and would those with expertise/experience in this area please give me your input and advice. Thanks.
Reply With Quote Quick reply to this message Share with Facebook
  #2  
Old 07-21-2011
JimsCAL's Avatar
Senior Member
 
Join Date: May 2007
Location: Glen Cove, NY
Posts: 2,499
Thanks: 2
Thanked 46 Times in 42 Posts
Rep Power: 8
JimsCAL is on a distinguished road
This excellent article may be of interest.

Universal Diesel M-25 Alternator Upgrade Photo Gallery by Compass Marine at pbase.com
Reply With Quote Quick reply to this message Share with Facebook
  #3  
Old 07-21-2011
Junior Member
 
Join Date: Jul 2011
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
NCTim is on a distinguished road
Thanks, that is an excellent article. It encourages me that what I want to do is possible. Will discuss with my favorite mechanic who has been discouraging me from pursuing this course.
Reply With Quote Quick reply to this message Share with Facebook
  #4  
Old 07-21-2011
Maine Sail's Avatar
Senior Member
 
Join Date: Jan 2003
Location: Maine Coast
Posts: 5,540
Thanks: 13
Thanked 150 Times in 116 Posts
Rep Power: 15
Maine Sail is just really nice Maine Sail is just really nice Maine Sail is just really nice Maine Sail is just really nice
Quote:
Originally Posted by NCTim View Post
Thanks, that is an excellent article. It encourages me that what I want to do is possible. Will discuss with my favorite mechanic who has been discouraging me from pursuing this course.
On what basis has he been discouraging you?
__________________
______
-Maine Sail / CS-36T


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.




© Images In Posts Property of Compass Marine Inc.


Reply With Quote Quick reply to this message Share with Facebook
  #5  
Old 07-22-2011
Junior Member
 
Join Date: Jul 2011
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
NCTim is on a distinguished road
My 30 HP engine and its small pulley will not accomodate the larger belt and strain of a high output alternator.
Reply With Quote Quick reply to this message Share with Facebook
  #6  
Old 07-22-2011
Maine Sail's Avatar
Senior Member
 
Join Date: Jan 2003
Location: Maine Coast
Posts: 5,540
Thanks: 13
Thanked 150 Times in 116 Posts
Rep Power: 15
Maine Sail is just really nice Maine Sail is just really nice Maine Sail is just really nice Maine Sail is just really nice
Quote:
Originally Posted by NCTim View Post
My 30 HP engine and its small pulley will not accomodate the larger belt and strain of a high output alternator.
The 3/8 belt can do about 75 to 80 amps but you'll still get some dusting. If you want to go larger than 100 amps, or don't want to deal with belt dust, call John at Electromaax and he can make you a custom serpentine pulley kit. Their alts are also top quality and very, very robust.
__________________
______
-Maine Sail / CS-36T


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.




© Images In Posts Property of Compass Marine Inc.


Reply With Quote Quick reply to this message Share with Facebook
  #7  
Old 07-22-2011
Junior Member
 
Join Date: Jul 2011
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
NCTim is on a distinguished road
Thanks, I really appreciate the tip. I will give John a call.
Reply With Quote Quick reply to this message Share with Facebook
  #8  
Old 08-05-2011
Senior Member
 
Join Date: Jan 2005
Posts: 103
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 10
wescarroll is on a distinguished road
I just put a 100 amp 1/2" drive single wire GM style alternator in my 18m. Simple bolt in replacement and with a quality Gates replacement belt have had no problems. Just google universal replacement marine alternators and keep going until you find one you like. Mine cost $60 plus $10 shipping from an outfit through amazon. Single wire units don't have a post for a tach, but a local rebuilider can add one. I just installed a larger belt in place of the 3/8" and it seemed to fit as if that was the correct size right from the beginning.
Reply With Quote Quick reply to this message Share with Facebook
Reply

Quick Reply
Message:
Options

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:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

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

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


Similar Threads
Thread Thread Starter Forum Replies Last Post
M25 Alternator Bracket Upgrade Stu Jackson Diesel 2 10-18-2011 03:04 PM
Balmar Alternator Upgrade ABJ501 General Discussion (sailing related) 14 09-13-2009 12:21 AM
Westerbeke W 27 Alternator upgrade Sreya Niagara 1 10-07-2008 12:12 AM
Alternator upgrade for Westerbeke W 27 Sreya Gear & Maintenance 0 09-09-2008 09:19 AM
C36 Alternator Upgrade MarkWood Catalina 8 06-28-2007 04:27 PM


All times are GMT -4. The time now is 11:28 PM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.