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Old 24-04-2012, 15:27   #1
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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


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Old 24-04-2012, 15:48   #2
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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.

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Old 24-04-2012, 18:28   #3
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I'm switching to the serpentine belt setup on my Perkins. Lifetime warranty on the belt. I'm also upgrading to the 120..
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Old 24-04-2012, 18:40   #4
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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....?
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Old 25-04-2012, 05:53   #5
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Re: Alternator bracket

Alternator accessories by Balmar They have the bracket you ned
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Old 25-04-2012, 07:22   #6
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Re: Alternator bracket

Greetings and welcome aboard the CF, bmm32005.
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"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?"

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Old 25-04-2012, 07:33   #7
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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:

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Old 25-04-2012, 08:07   #8
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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.
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Old 25-04-2012, 09:15   #9
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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.
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