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  #1  
Old 06-29-2010, 10:02 PM
gaffney1951 gaffney1951 is offline
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Default Alum. radiator install ...

I've found a shroud makes all the difference. In conjunction with a clutch fan and a properly sized radiator and 180 or higher t-stat you should never overheat under any conditions. Here are a few pics of the setup I've been working on including the 3G (130amp) conversion. The regulator on the inner fender has been gutted and now houses two of the three headlight relays for my new "Death Star" lighting system. The radiator is from Northern (universal ford style $230), way cheaper than some of the other stuff and nice quality. The shroud is from an old 351 LTD parts car I have. It was the perfect width, but required some trimming on the bottom and at the A/C compressor. A walk around a pick-a-part with a tape measure would probably get you a good shroud for cheap. When i get a little time I will post an in depth install on the alt., A/C, and radiator with pics. Mike

It should look a little better when I get it cleaned up.





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Old 06-29-2010, 10:58 PM
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Beautiful job, Mike.
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Old 06-29-2010, 11:59 PM
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Default Alum. radiator install ...

I second Dave's comment, Mike! When you get a chance, we would love to see that in depth report on the install.
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  #4  
Old 06-30-2010, 05:34 AM
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Quote:
Originally Posted by YellowRose View Post

I second Dave's comment, Mike! When you get a chance, we would love to see that in depth report on the install.
BEAUTIFUL WORK and it should be documented here (SEPARATE TECH ARTICLE) if you are willing to share...
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  #5  
Old 06-30-2010, 05:45 AM
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I just noticed-

Your 3G ALT conversion has only a single V-Belt drive (as far as I can see). Some have had trouble with belt slippage due to the extra resistance of the ALT (HI-AMP).

Can you post here if you have any trouble with it?
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Old 06-30-2010, 10:07 AM
gaffney1951 gaffney1951 is offline
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Default Belt ...

My son installed one on his Galaxie several months ago and has had no issues but I have heard of some people having problems. I should have the car up and running in a week or two so I will no more then. It may have to do with the type of belt, smooth verses segmented type. If necessary i will go to a double belt setup. Mike
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Old 06-30-2010, 12:01 PM
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130-amps of output certainly requires more input horsepower at the pulley. 3-G's come with a 2", 6-groove serpentine pulley, which has a lot more surface area than a V-belt. The solution for using a single-belt setup is to use a larger diameter pulley.

A larger diameter pulley acts like a larger lever; it turns the alternator shaft easier, but at the expense of a slightly slower speed. With 130-amps capability, there is only a slight change in output at idle speeds.

For the past 50+ years, most all generators and alternators have the same size shaft. So visit your local generator/starter rebuild shop. They have pulleys coming out their ying-yang. My guy charged me five bucks for an old Chevy pulley and a spacer (goes behind the pulley to make it stick out a little).

The pulley is held on by one nut and a lock washer. I put a pipe wrench on the original pulley, and a socket on the nut. It came apart right away. Nothing is pressed, tapered, or splined; it's a straight shaft with threads on the end.

Oh,... speed shops sell 'underdrive' pulleys (March brand), if you want chrome or polished aluminum. They're expensive and they do the same thing. - Dave
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