Voltage Regulators / Avanti

The Avanti regulators were larger because they contained an additional relay that protected the system from reverse
 polarity (not really necessary IMHO). Back in the 70's, these became very scarce. With minor wiring changes, the
 smaller, commonly available regulator could be substituted. The size had nothing to do with the amperage of the
 regulator, as it regulates only the voltage of the rotor. The same small regulator was used with Chrysler 70 amp
 alternators.

I recall making this change on my '63 Avanti back then. It sounds like you have one that is similarly modified. 
Since this was more than 25 years ago, I don't recall the specifics. Your options would include leaving the 
smaller regulator in place, as they work fine. They are commonly available, and a solid state version is now 
available for about $12 at Some FLAPS, e.g. Auto Zone. Otherwise, get a copy of the electrical schematic fo
r the Avanti and compare it to the schematic for a '64 Lark type. It should then be apparent exactly what was 
changed, and what would be necessary to change it back to the original configuration. Unless you are concerned 
about show points, I would leave it as is.

Rerun / SDC Forum - June 2011


David Thibeault sells a solid state voltage regulator inside a black metal case same size as the original factory regulator
 and puts a Prestolite decal on it that makes it identical to the original factory regulator in apperance. You get a solid
 state regulator, an original looking factory one and no deducts for judging. Makes a lot more since than bidding 
on an old mechanical regulator that may or may not be good. His parts list in Avanti magazine says $69 with core exchange.

okc63avanti / SDC Forum - June 2011



I have a voltage regulator that i bought from Jon Myer ,I had Dave T-bow convert it to electronic, when i had my
 altenator rebuilt. When my presto junk altenator went bad again it took the regulator with it.   I am now on the 
2nd altenator rebuild  &  2nd electronic regulator.If it goes again they are going in the trash,  I will go to a GM
 or Chrysler alternator. 

Lenny R2 / SDC Forum - June 2011