66 Alternator/Regulator

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May 27, 2005 | 09:22 AM

Dennis Beck

Thread Starter

Drifting

Joined: Sep 2004

Posts: 1,665

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From: Buffalo New York

66 Alternator/Regulator

I replaced my alternator in my 66 when I did my engine swap with an 80 amp model. Last night while driving my battery guage would be at +40 when the engine rpm was up and at 0 when the engine was at idle. I went home and put my old alternator back on and had the same problem. I then tapped the regulator slightly and the guage returned to normal operation. I went for another ride and the same thing occured once again. This regulator is probably the original. My question is could an 80 amp alternator be too large and cause the regulator to fail? NAPA has a regulator for a 66 #VR142SB that is rated for a 63 amp alternator. I am going to put that regulator on the car tonight. Do you think this new regulator will handle an 80 amp alternator?

May 27, 2005 | 09:37 AM

67L36Driver

Safety Car

Joined: Feb 2003

Posts: 4,068

Likes: 27

From: St. Joseph Mo

Get a new replacement solid state regulator form any parts store. Cost will be 10-20 bucks.
Take that old mechanical contact POS and put it on the shelf for the next owner.

Do this before you cook the s%&t out of your battery.

May 27, 2005 | 09:37 AM

magicv8

Le Mans Master

Joined: Nov 2000

Posts: 7,246

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From: Going too fast over the hill. Iowa

IMO - no. I installed a transistor regulator supplied by a FL company that I found on the web. They have a heavy duty regulator used for high amp (truck) duty. They do not sell direct to the public. After you get the make and model number of the reg, you can ask them to identify a local vendor.

A thread search may turn up the name of the supplier. If not, I'll dig up the name of the reciept.

May 27, 2005 | 09:41 AM

Dennis Beck

Thread Starter

Drifting

Joined: Sep 2004

Posts: 1,665

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From: Buffalo New York

Wiring

With a solid state regulator will my wiring harness plug at the regulator (4 pins) match the new regulator?

May 27, 2005 | 09:44 AM

magicv8

Le Mans Master

Joined: Nov 2000

Posts: 7,246

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From: Going too fast over the hill. Iowa

Yes, and you can even put your delco remy cover on it if the blank cover offends.

May 27, 2005 | 10:24 AM

Dennis Beck

Thread Starter

Drifting

Joined: Sep 2004

Posts: 1,665

Likes: 60

From: Buffalo New York

Thanks this sounds like a good upgrade. I will start calling around to find one.

May 27, 2005 | 12:48 PM

Tyler Townsley

Melting Slicks

Joined: May 2001

Posts: 2,159

Likes: 64

From: Nichols Florida

Quote:

Originally Posted by Dennis Beck

I replaced my alternator in my 66 when I did my engine swap with an 80 amp model.

You can take the stock alternator to a good alternator shop and they can change the internals to a 105 Amp unit. The advantage of this is it still looks stock. I have one on my 68 and 66. I have the stock regulator in the 68 and one of the newer electronic types on the 66. I drive the 66 most every day and have had no problems.

Tyler