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Re: [alfa] Dead springs on Magnet Marelli advance mechanism?



Hi Matt:

So far, you're still describing what appear to be normal conditions for the
parts you've got.  A few years ago I was able to find replacement advance
springs from AR Ricambi, but be forewarned, the person you speak with on
the phone likely won't have a clue, so search their website and just give
them a part number.  And FWIW, a '72-'74 Spica Spider should run a lot
better than just about any other Spider you've driven, and with everything
in proper tune it should run great at all rpm's and throttle positions.  It
worth getting things right.

http://www.arricambi.com/

Regards,

Dean


At 11:53 PM 6/17/2004, you wrote:
Thanks for the replies

I have a PLEX 10 system in the car, which was used in the 80-81 spiders.
True, I don't truly know the springs are dead, but there are two different
kinds of springs in the advance mechanism (different weigths and coil
counts), and one of them is overstretched so it doesn't even engage in the
first 1/4" of travel of the weight.  The rest of the SPICA is still in
place.
Oh well.  The car still runs pretty well when it's wide open... :)

- Matt

From: "Dean W. Cains" <[email protected]>
To: [email protected]
CC: "Matthew Hanselman" <[email protected]>
Subject: Re: [alfa] Dead springs on Magnet Marelli advance mechanism?
Date: Wed, 16 Jun 2004 22:19:23 -0400

Hi Matt:

I'm not sure what criteria you're using to determine the condition of the
advance springs, but a fair amount of free play is built into their
mechanism.  The only proper way to check your timing, and advance/retard
with rpm changes, is with a timing light (preferably an "advance" timing
light with a dial indicator or digital display).  Tried that?  Assuming
that you have, there are other considerations, and given the choice
between having the timing set properly at 5000 rpm's or idle. most of us
would choose the former, and that's not necessarily something that needs
intervention.  Further, if the distributor is in fact from an '80 Spica
Spider, you'd be better off with the original distributor, with regards
to having an advance curve that suits the '73 Spica engine.  Finally, I'm
sure most of us are unsure what distributor you're speaking about, since
all the Spica cars used Marelli distributors, although among the later
cars, some had dual sets of points and some were breakerless.  Do you
have a model number?  Does your '73 have its Spica system still in place?
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