Cruisers Forum

Join CruisersForum Today

Thread Tools Rate Thread Display Modes
Old 24-04-2012, 15:27   #1
Registered User

Join Date: Jul 2011
Posts: 39
Alternator bracket

My alternator fun continues!

I'm replacing my alternators with high amp ones.

One engine has a curved alternator tensioning bracket that fits the new alternator perfectly.

The other engine has a small straight bracket that isnt long enough to reach the bolt.

Where can I get a curved bracket? I've looked everywhere online

Or do I need to get it machined by a shop?

The engines are 3gm 30f yanmar


cutlass is offline   Reply With Quote
Old 24-04-2012, 15:48   #2
CF Adviser
Moderator Emeritus
Hud3's Avatar

Cruisers Forum Supporter

Join Date: Sep 2007
Location: Virginia
Boat: Island Packet 380, now sold
Posts: 8,931
Images: 54
Re: Alternator bracket

When I replaced my alternator with a much larger one, I had a local mechanic fabricate one. He did a really good job. Alignment is critical.

Hud3 is offline   Reply With Quote
Old 24-04-2012, 18:28   #3
Registered User
John Galt's Avatar

Join Date: Apr 2007
Location: Titusville Fl.
Boat: Cheoy Lee Offshore 38
Posts: 120
I'm switching to the serpentine belt setup on my Perkins. Lifetime warranty on the belt. I'm also upgrading to the 120..
Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin to slit throats. H. L. Mencken
John Galt is offline   Reply With Quote
Old 24-04-2012, 18:40   #4
Senior Cruiser
Cheechako's Avatar

Cruisers Forum Supporter

Join Date: Aug 2006
Location: Skagit City, WA
Posts: 20,032
Re: Alternator bracket

Balmar used to sell them, I think Ample Power too... they dont now? Seems like I might have even seen one in West Marine....?
"I spent most of my money on Booze, Broads and Boats. The rest I wasted" - Elmore Leonard

Cheechako is offline   Reply With Quote
Old 25-04-2012, 05:53   #5
Registered User

Join Date: Apr 2012
Location: RI
Boat: Tartan 3800
Posts: 123
Re: Alternator bracket

Alternator accessories by Balmar They have the bracket you ned
bmm32005 is offline   Reply With Quote
Old 25-04-2012, 07:22   #6
Moderator Emeritus
GordMay's Avatar

Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 32,215
Images: 240
Re: Alternator bracket

Greetings and welcome aboard the CF, bmm32005.
Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"

GordMay is offline   Reply With Quote
Old 25-04-2012, 07:33   #7
Registered User
slacker's Avatar

Join Date: Nov 2006
Location: San Diego and Mazatlan
Boat: Gulfstar 37 "SLACKER"
Posts: 150
Re: Alternator bracket

Tried the Balmar one on our 4-108 and it was way too large. Try these forlks for a bracket or arm:


Here is what we did, works great:

Attached Thumbnails
Click image for larger version

Name:	Alternator.jpg
Views:	944
Size:	418.9 KB
ID:	40374  
slacker is offline   Reply With Quote
Old 25-04-2012, 08:07   #8
Registered User
sww914's Avatar

Join Date: May 2009
Location: Punta De Mita
Boat: Vagabond 39 Hull # 1
Posts: 1,842
Re: Alternator bracket

I was going to post that hot rod supplies like and have a lot of stuff like that and cheap, but that turnbuckle kicks ass! I'll do that on mine the next time I change the belt.
sww914 is offline   Reply With Quote
Old 25-04-2012, 09:15   #9
Registered User
sy_gilana's Avatar

Join Date: Jan 2005
Location: On board
Boat: Van de Stadt 50'
Posts: 1,147
Send a message via Skype™ to sy_gilana
Re: Alternator bracket

When we were in West Palm Beach, we found an Alternator shop called "Riviera Generator" They had boxes and boxes of curved, double curved, reverse curved, you name it. The old guys said "Help yaself" Try to find an auto electrical near you.
Love the turnbuckle though!!

Tight sheets to ya.
sy_gilana 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

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 13:21.

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.