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| A-cirucit or B-circuit?? (electronic regulators) https://slantsix.org/forum/viewtopic.php?t=33327 |
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| Author: | robertob [ Thu Jan 15, 2009 7:25 am ] |
| Post subject: | A-cirucit or B-circuit?? (electronic regulators) |
My valiant was converted to electronic volt regulator with the standard Mopar A-circuit stuff many years ago, but I was thinking of converting it back to B-circuit regulation with the Echlin VR1001 or similar. This would be for looks (more stock), and potentially better voltage at idle (I can't get any more than 12.7-12.9 under 800 rpm). Incidentally I've owned '64 Darts with both systems and couldn't tell a difference. Both of them seemed to have better idle output than this valiant though. |
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| Author: | SlantSixDan [ Thu Jan 15, 2009 10:57 am ] |
| Post subject: | |
The regulator isn't affecting your voltage at idle - look harder at your alternator. |
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| Author: | robertob [ Fri Jan 16, 2009 1:28 pm ] |
| Post subject: | |
Yeah it's an OEM from some early '70s mopar. I have absolutely no idea how many amps it is, but the output at idle seems real low. Full-fielding it does nothing at idle. I posted the above before doing some more investigating. I added a proper ground from the alt case to the regulator (i've been meaning to add a ground harness for a long time), which did nothing for idle voltage but did lower the high-rpm voltage a little. i'll check the diodes - i have a generic rebuilt alternator that I could use for parts. |
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| Author: | SlantSixDan [ Fri Jan 16, 2009 6:27 pm ] |
| Post subject: | |
Idle output is highly variable in the Mopar alternators. Some of them work okay at idle, and others are really weak — that's even with non-"remanufactured" units. There's also a range of pulley sizes; a smaller pulley spins the alternator faster at idle. |
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