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  #1 (permalink)  
Old 12-03-2020, 02:15 PM
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Default Original Style Alternator

Anyone install an original style alternator (C5TF-10300-F) on their ERA with an FE? Any issues?
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Old 12-03-2020, 03:04 PM
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I think that is the type/style suggested by ERA.

What do you currently have?

John
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Old 12-03-2020, 06:15 PM
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I have the Delco part number called out in the manual which I purchased the NAPA equivalent. I was looking for something that looked more original, I don't like the one I have that is cast in chineseium...
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Old 12-03-2020, 06:56 PM
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This article may shed some light on your issue

Shelby & FE alternators

I put a 45amp 1G on my first car and found it often 'discharging' because the alternator couldn't keep up with the amperage requirements. Went with a hybrid on the second build. 100amps and most people can't tell the difference from an original

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Old 12-03-2020, 08:48 PM
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Originally Posted by PaulProe View Post
This article may shed some light on your issue

Shelby & FE alternators

I put a 45amp 1G on my first car and found it often 'discharging' because the alternator couldn't keep up with the amperage requirements. Went with a hybrid on the second build. 100amps and most people can't tell the difference from an original

Paul
Hybrid? Is that a 1G case with 3G internals?
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Old 12-03-2020, 08:55 PM
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As I understand it, the main case is the Ford 1g. The rear of the case comes from a GM vehicle. With that, they're able to pump out 140 Amps. Take a look at the Tuff Stuff site for more details and info

It will fit an FE, depending on the heads used. Clearances get pretty tight

Paul
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Old 12-04-2020, 03:02 AM
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We have these for the correct alternator: https://www.timemachineauto.com/s2cs...lternator.html

You can build a "1G" to about 70 amps without changing the original type case.
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Old 12-04-2020, 07:27 AM
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I have a Powermaster 7078, which is a 75A direct replacement for an original alternator. It works well in my ERA with FE.
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Old 12-04-2020, 12:06 PM
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I have run this for 2,000 miles with no issues:

https://www.deadnutson.com/1965-1971...e-alternators/
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Old 12-04-2020, 12:07 PM
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Forgot to mention that getting the original style alternator fan is the real tricky part...
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Old 12-04-2020, 12:38 PM
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Forgot to mention that getting the original style alternator fan is the real tricky part...
That's the one I was looking at... the 55A is all I need. What was tricky about the fan? Also, did you have any issues with your belt alignment?
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Old 12-04-2020, 05:30 PM
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Craig did the installation so I cannot comment on the belt alignment. We used old school Ford pulleys and I do not recall there being an issue. My understanding is that the original BB cobras used a high-performance pulley / fan on the alternator. Finding that was not easy.
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Old 12-04-2020, 05:36 PM
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Now that I think about it, Craig may have made to make a spacer for the pulley. I am sure if he sees this he will comment.
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Old 12-04-2020, 05:58 PM
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Originally Posted by Mongoose930 View Post
Now that I think about it, Craig may have made to make a spacer for the pulley. I am sure if he sees this he will comment.
Thanks for the info! I take it that the pulley and fan from that site are not the correct ones?

Hopefully Craig chimes in...
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Old 12-04-2020, 06:15 PM
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I do not believe they offer the correct fan/pulley for a cobra. It is almost impossible to find a reproduction, never mind an original...
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Old 12-05-2020, 03:11 AM
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I do not believe they offer the correct fan/pulley for a cobra. It is almost impossible to find a reproduction, never mind an original...
Figures, well it is what it is. I don't have an original Cobra so I'm not going to lose sleep over that.
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Old 12-05-2020, 05:34 AM
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I do not believe they offer the correct fan/pulley for a cobra. It is almost impossible to find a reproduction, never mind an original...
Yes,

They are had to find. You can use the standard single sheaf pulley from a T-Bird (63-64) or Lincoln of the same vintage. The last N.O.S. large diameter pulley we had went for over $600.00! Dearborn Steel Tube did a run of repops some years ago for the Thunderbolts, etc. but they have dried up. We would entertain doing a run if we could sell at least 50 units at somewhere between $100.00 and $150.00.



This is with the smaller diameter pulley which we have some original, used units. We also have the round case 1G alternator cores.
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Old 12-05-2020, 06:17 AM
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Originally Posted by Mark IV View Post
Yes,

They are had to find. You can use the standard single sheaf pulley from a T-Bird (63-64) or Lincoln of the same vintage. The last N.O.S. large diameter pulley we had went for over $600.00! Dearborn Steel Tube did a run of repops some years ago for the Thunderbolts, etc. but they have dried up. We would entertain doing a run if we could sell at least 50 units at somewhere between $100.00 and $150.00.



This is with the smaller diameter pulley which we have some original, used units. We also have the round case 1G alternator cores.
I would be in for one of those if you find enough interested and decide to make a batch.
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Old 12-05-2020, 07:09 AM
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Quote:
Originally Posted by jetblue69 View Post
Thanks for the info! I take it that the pulley and fan from that site are not the correct ones?

Hopefully Craig chimes in...
The alternator pulley on Kevin's car required a bit of work to get everything fitting, I had to squeeze every bit of clearance I could to pull the alternator back towards the engine block.
Both the water pump and crank pulleys need to be spaced accordingly to the alternator pulley.

It all worked out great on Kevin's car with enough clearance on the shock tower etc.


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Old 12-05-2020, 07:53 AM
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Originally Posted by Mongoose930 View Post
I do not believe they offer the correct fan/pulley for a cobra. It is almost impossible to find a reproduction, never mind an original...
Definitely the piece I had the hardest time tracking down for my build.
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