Donny,
Replacing the rectifier must be what I need to do. I looked in the Moss
catalog for a diode and didn't see one. I'm assuming from your post that the
diode is part of the rectum flier, excuse me, rectifier. I'll probably switch
out the alternators and then order the rectifier for the repair.
Is replacing this part fairly straightforward?
Thanks,
Monte
----- Original Message -----
From: DEVierling@aol.com
To: mmorris@nemr.net
Cc: mgs@autox.team.net
Sent: Monday, December 22, 2003 9:55 PM
Subject: Re: alternator
Monte,
I forget what the differences in alternators are, and I couldn't get much of
a clue from the Moss website (only one exploded alternator view for all
years...), but I seem to remember something about changes in wiring. It's
also possible the '79 is physically different from the '74 and won't mount to
your brackets. Don't forget, there were many alternators fitted over the
years and I believe the replacements Moss sells require some wire
modifications depending on the year. Assuming a bad diode IS the problem,
can't you just replace the whole rectifier? Looks like the 1979 rectifier is
available as Moss part # 130-250 for only $11.95.
Donny V
1978 MGB
In a message dated 12/21/2003 5:29:33 PM US Mountain Standard Time,
mmorris@nemr.net writes:
From the previous few weeks' posts, I've determined that I have a blown
diode in the alternator of the 79B; evidently 125 amps of boost start is
too
hot to handle for the beast.
I have a 74 parts car with alternator, but the Moss catalog shows it will
not work on the 79. Can someone explain why they are not interchangeable?
Thanks,
Monte
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