Internally Regulated Alternator

mach2andy

CCCUK Member
Has anybody got an aftermarket internally regulated alternator fitted to their car? If so, does the original ammeter work?
 

Chris Sale

CCCUK Member
Back in 2011 I replaced my original 55A alternator with a 63A internally regulated alternator from CK

IMG_1222.JPGIMG_1856.JPG

My original ammeter works as normal. Something to look out for, depending on how your alternator is mounted, is that the self-regulated alternator is 'fatter' than the original and in my case it contacts the valve cover before I can move it far enough in to remove the belt from the pulley. I tried using a next-size-up belt, but this made contact with the nose of the power steering pump, so I now have to slacken the water pump pulley to change the alternator belt.

Chris Sale
'64 Coupe
 

Custom exotics

Well-known user
Be careful using Ammeter with a new alternator esp if new alternator ampage is much higher than original As it will burn out the Ammeter gauge !!
 

Chris Sale

CCCUK Member
I don't know about other generations, but in C2s (and presumably C3s?) I think it it is safe to say that because the ammeter does not 'see' the output of the alternator, changing to a higher-output alternator should not cause any damage. This article from a 1993 issue of the NCRS Corvette Restorer gives a good explanation of how the C2 ammeter works.

Restorer Ammeter 1.jpg
Restorer Ammeter 2.jpg

Chris Sale
'64 Coupe
 
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