Re: SER1 Distributor question

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From: Michael Carradine
Subject: Re: SER1 Distributor question
Date: 17:44 on 01 Feb 2005

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At 05:06 AM 2/1/2005, Ulrico wrote:<br>
<blockquote type=cite class=cite cite=""><font face="arial">during the
preparations to start the 80incher two questions came to my mind:<br>
1. When transmitting the spark to the plugs, should the
&quot;finger&quot; inside the distributor actually be touching the
contacts in the cap or is the spark expected to jump the gap? If it
should touch how do you compensate for wear?</font></blockquote><br>
By &quot;finger&quot; I assume you are referring to the rotor,<br>
the plastic pointer sitting on the top of the shaft.<br>
The spark is a high tension discharge (1'000's of volts)<br>
coming from the coil in the center and being directed<br>
to the various spark plug cables in turn.&nbsp; The point of<br>
the rotor does not touch the contacts in the cap.<br>
Notice the rotor end has a wide arc to assure that it<br>
is directly opposite one on the contacts as the spark<br>
is discharged.&nbsp; It does jump the gap and eventually<br>
cause wear on both contact surfaces as evidenced<br>
by burning, pitting and carbonization.&nbsp; As part of your<br>
regular 100'000 mi servicing, I suggest cleaning the<br>
rotor and contacts, wether they need it or not.<br><br>
<blockquote type=cite class=cite cite=""><font face="arial">2. Is it
possible to fit later series distributors to 2l
engines?</font></blockquote><br>
Later distributors may have vacuum advance devices<br>
as used for emission control, or other features which<br>
may make them unsuitable, even if they physically fit.<br>
It would be best to retain the original unit if possible.<br><br>
If you have a wobbly distributor shaft making it near<br>
impossible to maintain accurate timing, it may be<br>
possible to install an electronic ignition module such<br>
as Pertronix or others.&nbsp; These modules replace the<br>
contact point set and disconnect the condenser.<br>
A plastic ring with 4 magnetic metal bars fits over the<br>
distributor shaft and sets off a trigger mounted in<br>
place of the points.&nbsp; All components remain inside<br>
in the distributor to maintain the original look from<br>
the engine compartment.&nbsp; Timing will be rock-solid<br>
and there are no points to wear out.&nbsp; Cost is usually<br>
$100-150 for a unit.&nbsp; However, wiring to positive<br>
ground may be tricky =:0<br><br>
Michael Carradine<br>
Early 1950 80&quot; RHD ex-MoD</body>
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SER1 Distributor question
Ulrico Becker 13:06 on 01 Feb 2005

Re: SER1 Distributor question
Michael Carradine 17:44 on 01 Feb 2005

AW: SER1 Distributor question
Ulrico Becker 12:34 on 02 Feb 2005

AW: SER1 Distributor question
Ulrico Becker 14:36 on 07 Feb 2005

AW: SER1 Distributor question
Michael Carradine 20:16 on 07 Feb 2005

AW: SER1 Distributor question
Ulrico Becker 10:55 on 08 Feb 2005

Re: SER1 Distributor question
Diana Alan 11:08 on 08 Feb 2005

AW: SER1 Distributor question
Ulrico Becker 12:21 on 08 Feb 2005