I rebuilt my alternator with a new diode pack,contacts,voltage regulator etc

It bench tested OK

Now that it is installed I am getting 13.95v @idle.This seems a little high

What should I be expecting?

Mine gives roughly the same voltage at the same time. Always has over the 12 years I have owned it and the battery and the alternator are still the same.

14v seems normal. It's the current that changes with revs.

Thats fine - max battery voltage fully charged is 13.8 so you need to be over that to get the battery up to that. Not too much over or you boil the battery - besides you will have line loses anyway.

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David L


My greatest fear in life is that when I die my wife will sell my Mini and tools for the price I told her I paid for them!

Unlike a generator, an alternator actually charges pretty well at idle.
Sounds normal to me. If you rev it, it probably won't go past 14.3V anyway, which is normal.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

Great. I was trying to establishthe baseline voltage - Thanks