system volts too high?

scott thomas scott at
Fri Dec 13 12:45:25 EST 2002

Yesterday, I replaced my 200's tired alternator with a known freshly
rebuilt unit from a junkyard. The standard Bosch regulator puts out
~13.8 volts wheras the rebuilt unit on the car (200q) had a no name
regulator and consistantly put out 14.5 volts, as confirmed by a
separate voltmeter. Anyway, I decided to replace the brush assembly
on the newer unit with a Uni Point type. It's the black rectangular
type that was used on earlier cars. My bearing housing has the flat
in it, so fitment was no problem. I had a used one from my old car
that put out only 13.6v. I had a new one in the package. I put it on
and now voltage is going up to 14.9 at speed. Idle is about 14.7.
Sometimes I do see 15v. I keep the headlights on to control the
output. How high is too high?

Next q- does the 110 amp 200 alternator have the 28 or 32 mm slip
rings? Where can I get higher output regulators (14.4 volt models),
provided this new one is shot?

Should I just stick with the 14 volt Bosch that was on it? I'm used
to having the car with the higher output voltage regulator, so I
don't know if the 13.6 volts is what I should be getting.

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