AW: SER1 Distributor question
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Hi Michael,
Thank you for your great explanation! I will post a picture of the
distributor next weekend. I would have thought it has something like a
vacuum advance device.
Ulrico
_____
Von: series1-host@xxxxxxxxx.xxx [mailto:series1-host@xxxxxxxxx.xxx] Im
Auftrag von Michael Carradine
Gesendet: Dienstag, 1. Februar 2005 18:44
An: series1@xxxxxxxxx.xxx
Betreff: Re: SER1 Distributor question
At 05:06 AM 2/1/2005, Ulrico wrote:
during the preparations to start the 80incher two questions came to my mind:
1. When transmitting the spark to the plugs, should the "finger" 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?
By "finger" I assume you are referring to the rotor,
the plastic pointer sitting on the top of the shaft.
The spark is a high tension discharge (1'000's of volts)
coming from the coil in the center and being directed
to the various spark plug cables in turn. The point of
the rotor does not touch the contacts in the cap.
Notice the rotor end has a wide arc to assure that it
is directly opposite one on the contacts as the spark
is discharged. It does jump the gap and eventually
cause wear on both contact surfaces as evidenced
by burning, pitting and carbonization. As part of your
regular 100'000 mi servicing, I suggest cleaning the
rotor and contacts, wether they need it or not.
2. Is it possible to fit later series distributors to 2l engines?
Later distributors may have vacuum advance devices
as used for emission control, or other features which
may make them unsuitable, even if they physically fit.
It would be best to retain the original unit if possible.
If you have a wobbly distributor shaft making it near
impossible to maintain accurate timing, it may be
possible to install an electronic ignition module such
as Pertronix or others. These modules replace the
contact point set and disconnect the condenser.
A plastic ring with 4 magnetic metal bars fits over the
distributor shaft and sets off a trigger mounted in
place of the points. All components remain inside
in the distributor to maintain the original look from
the engine compartment. Timing will be rock-solid
and there are no points to wear out. Cost is usually
$100-150 for a unit. However, wiring to positive
ground may be tricky =:0
Michael Carradine
Early 1950 80" RHD ex-MoD To change subscription see
www.landrover.net/series1/mail
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<DIV dir=3Dltr align=3Dleft><SPAN class=3D778211912-02022005><FONT =
face=3DArial=20
color=3D#0000ff>Hi Michael,</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D778211912-02022005><FONT =
face=3DArial=20
color=3D#0000ff></FONT></SPAN> </DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D778211912-02022005><FONT =
face=3DArial=20
color=3D#0000ff>Thank you for your great explanation! I will post a =
picture of the=20
distributor next weekend. I would have thought it has something like a =
vacuum=20
advance device.</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D778211912-02022005><FONT =
face=3DArial=20
color=3D#0000ff></FONT></SPAN> </DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D778211912-02022005><FONT =
face=3DArial=20
color=3D#0000ff>Ulrico</FONT></SPAN></DIV><BR>
<DIV class=3DOutlookMessageHeader lang=3Dde dir=3Dltr align=3Dleft>
<HR tabIndex=3D-1>
<FONT face=3DTahoma size=3D2><B>Von:</B> series1-host@xxxxxxxxx.xxx=20
[mailto:series1-host@xxxxxxxxx.xxx] <B>Im Auftrag von </B>Michael=20
Carradine<BR><B>Gesendet:</B> Dienstag, 1. Februar 2005 =
18:44<BR><B>An:</B>=20
series1@xxxxxxxxx.xxx<BR><B>Betreff:</B> Re: SER1 Distributor=20
question<BR></FONT><BR></DIV>
<DIV></DIV>At 05:06 AM 2/1/2005, Ulrico wrote:<BR>
<BLOCKQUOTE class=3Dcite cite=3D"" type=3D"cite"><FONT =
face=3Darial>during the=20
preparations to start the 80incher two questions came to my =
mind:<BR>1. When=20
transmitting the spark to the plugs, should the "finger" inside the=20
distributor actually be touching the contacts in the cap or is the =
spark=20
expected to jump the gap? If it should touch how do you compensate for =
wear?</FONT></BLOCKQUOTE><BR>By "finger" I assume you are referring to =
the=20
rotor,<BR>the plastic pointer sitting on the top of the shaft.<BR>The =
spark is a=20
high tension discharge (1'000's of volts)<BR>coming from the coil in the =
center=20
and being directed<BR>to the various spark plug cables in turn. =
The point=20
of<BR>the rotor does not touch the contacts in the cap.<BR>Notice the =
rotor end=20
has a wide arc to assure that it<BR>is directly opposite one on the =
contacts as=20
the spark<BR>is discharged. It does jump the gap and =
eventually<BR>cause=20
wear on both contact surfaces as evidenced<BR>by burning, pitting and=20
carbonization. As part of your<BR>regular 100'000 mi servicing, I =
suggest=20
cleaning the<BR>rotor and contacts, wether they need it or not.<BR><BR>
<BLOCKQUOTE class=3Dcite cite=3D"" type=3D"cite"><FONT face=3Darial>2. =
Is it possible=20
to fit later series distributors to 2l =
engines?</FONT></BLOCKQUOTE><BR>Later=20
distributors may have vacuum advance devices<BR>as used for emission =
control, or=20
other features which<BR>may make them unsuitable, even if they =
physically=20
fit.<BR>It would be best to retain the original unit if =
possible.<BR><BR>If you=20
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=20
such<BR>as Pertronix or others. These modules replace =
the<BR>contact point=20
set and disconnect the condenser.<BR>A plastic ring with 4 magnetic =
metal bars=20
fits over the<BR>distributor shaft and sets off a trigger mounted =
in<BR>place of=20
the points. All components remain inside<BR>in the distributor to =
maintain=20
the original look from<BR>the engine compartment. Timing will be=20
rock-solid<BR>and there are no points to wear out. Cost is=20
usually<BR>$100-150 for a unit. However, wiring to =
positive<BR>ground may=20
be tricky =3D:0<BR><BR>Michael Carradine<BR>Early 1950 80" RHD ex-MoD To =
change=20
subscription see www.landrover.net/series1/mail </BODY></HTML>
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