Homemade 470 alternator bracket?

[nola mike]

Intermittent charging issues last season with the 470; figure I might as well upgrade to an alternator system before it becomes a "must do" item mid-season (btw, that's 25 years on the original "unreliable" stator system, for those keeping track at home). The fall back is the breezeworks setup, but seems like I should be able to buy and alternator and have someone fab a few brackets for well under $300. Has anyone done this? If so, do you have a template/measurements? Lastly, not sure where the "low mount" setup goes--do I want this, or do I want "high mount"? No P/S on my rig...

 

[guyaverage]

Re: Homemade 470 alternator bracket?

I made my own low-mount bracket setup ( I have power steering). You could probably duplicate it or something similar for about $20 in nuts, bolts, threaded rod, and some steel stock, all out of Home Depot. The alternator was an eBay, $60 marine-rated 10si. When I get home, I'll snap a few pictures and take a few measurements.

 

[ericcarr2000]

Re: Homemade 470 alternator bracket?

I bought my set up on e-bay for $270.00 last year. I absolutely love it. Gotta love them 1 wire hundred amp alternators.

 

[nola mike]

Re: Homemade 470 alternator bracket?

Thanks, that would be great.

 

[Desertsky]

Re: Homemade 470 alternator bracket?

Intermittent charging issues last season with the 470; figure I might as well upgrade to an alternator system before it becomes a "must do" item mid-season (btw, that's 25 years on the original "unreliable" stator system, for those keeping track at home). The fall back is the breezeworks setup, but seems like I should be able to buy and alternator and have someone fab a few brackets for well under $300. Has anyone done this? If so, do you have a template/measurements? Lastly, not sure where the "low mount" setup goes--do I want this, or do I want "high mount"? No P/S on my rig...

The PO of mine did the high mount with a long bolt and a bunch of nuts as a spacer and used a standard automotive arm and alternator. It works great and costs about $50 for the rebuilt GM alternator. I can post some pictures this weekend if you need them.

 

[nola mike]

Re: Homemade 470 alternator bracket?

The PO of mine did the high mount with a long bolt and a bunch of nuts as a spacer and used a standard automotive arm and alternator. It works great and costs about $50 for the rebuilt GM alternator. I can post some pictures this weekend if you need them.

yeah, that would be great, thanks. I think I'm also going to try the auto regulator idea mentioned here; going to swing by the junk yard and see if I can pick one up and test...

 

[guyaverage]

Re: Homemade 470 alternator bracket?

http://img.photobucket.com/albums/v209/guyaverage/boat024.jpg
http://img.photobucket.com/albums/v209/guyaverage/bracket.jpg
http://img.photobucket.com/albums/v209/guyaverage/boat026.jpg

Here are some pictures of my homemade 'low mount' setup. It relies on the power steering pump for adjustment of the belt tension. There are two 7/16 holes under the water pump housing that in some 470's is used to secure the bracket for the coolant overflow tank. I moved the overflow tank to the transom, and put threaded rod into these holes. The supports are 1/4 inch thick, 1.0 inch wide steel straight out of Home Depot. I used rod joiners between the lower supports to stiffen the threaded rod.

The upper support beam is the same 1/4 x 1 inch steel as the lower support, attached with 5/16 threaded rod into the water pump housing. The curved bracket on the top of the alternator is off a Chevy S-10, it gave the perfect spacing between the upper beam and the alternator, in order to line up the pulleys.

Since everything was threaded into aluminum I was a bit conservative with the torque wrench and used lockwashers wherever I could. It looks a bit cheesy, but whole assembly is very solid and doesnt vibrate at all. Once everythig was cut to size and fitted, I cleaned the individual parts with acetone and sprayed it with rustoleum black.

 

[HT32BSX115]

Re: Homemade 470 alternator bracket?

It works great and costs about $50 for the rebuilt GM alternator. I can post some pictures this weekend if you need them.

There's no reason you cannot do it. just ENSURE that you're using an SAE J1171 compliant marine alternator.

 

[dn010]

Re: Homemade 470 alternator bracket?

So what ever happened? Did you put in a regulator or did you make brackets? I need to figure out how to put an alternator on my 470 by Monday so I'm a bit curious what you ended up doing....

 

[altoonab]

Re: Homemade 470 alternator bracket?

I am trying this, What year S10 did you get the bracket from

 

[wrestling coach]

Re: Homemade 470 alternator bracket?

This thread is two years old. You will get better results if you start a new one stating your question. Just sayin'.

Dennis

 

[nola mike]

Re: Homemade 470 alternator bracket?

Hey! This is my thread! Got lazy and went with the breezeworks set up. Took about an hour to install, has worked great since.