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I used a 3 ohm Pertronix coil, and so far it has worked flawlessly=2E After=
a new Lucas coil died in less than a year, I won't use Lucas again=2E
Another alternative is to check with your FLAPS=2E I walked into a NAPA st=
ore in a small town last year, and they had a 3 ohm coil on the shelf=2E It=
has worked fine so far as well (on a Ferguson tractor with the Standard en=
gine)=2E Price was over twice that of a Pertronix from Amazon, but I got to=
try it that afternoon=2E
For wires, I went with classic copper core wire, combined with plug connec=
tors that have suppression resistors built in=2E The plug boots I used are =
normally sold for motorcycles, I found some 135 degree ones from NGK that f=
it nicely=2E On Amazon IIRC, but likely available at my friendly local moto=
rcycle parts store :)
The other option I see is to convert completely to push-on connectors for =
the high tension leads and carbon core wires=2E There is a distributor cap =
available with modern (well, more modern anyway) push-on terminals that fit=
s exactly in place of the original cap with the piercing screws=2E Used on =
MGB I believe, probably lots of other British cars as well=2E
-- Randall
On 13 June 2019 19:17:32 GMT-06:00, Dave MacKay <dave@mdmackay=2Eca> wrote=
:
> Puzzled by simple things=2E Looking for guidance
>
>Hello:
>
>I=E2=80=99m looking to replace the coil and spark plugs wires on my TR3A=
=2E The
>car
>has been converted to negative ground and has a Crane XR-700 electronic
>ignition=2E I=E2=80=99m a bit unsure about what I need=2E
>
>1) Coil
>
>Using instructions that Randall posted several years ago, I measured
>3=2E8 o
>hms and 10=2E8 volts from my existing coil=2E That makes me think that I
>need a
>12v non-ballasted coil=2E Is that correct?
>
>The connector for the high tension lead (to the distribution) is a push
>on;
>the two small terminals on the coil are threaded so that the wires are
>attached with nuts (not Lucar-type connectors)=2E
>
>I would welcome any recommendations as to coils=2E I was thinking of a
>replacement like Moss #143-220 (
>*https://mossmotors=2Ecom/coil-ignition-push-on-coil-wire-lucas*
><https://mossmotors=2Ecom/coil-ignition-push-on-coil-wire-lucas>) or Moss
>#
>143-221 (
>*https://mossmotors=2Ecom/coil-ignition-push-on-coil-wire-aftermarket*
><https://mossmotors=2Ecom/coil-ignition-push-on-coil-wire-aftermarket>)=
=2E
>
>2) Spark plug wires
>
>I thought this would be simple, but it seems not=2E I was planning to buy
>Moss
>571-005 (
>*https://mossmotors=2Ecom/ignition-wire-set-push-in-style-cobalt-brand*
><https://mossmotors=2Ecom/ignition-wire-set-push-in-style-cobalt-brand>)
>but
>was told that they weren=E2=80=99t appropriate because of my Crane unit=
=2E I
>didn=E2=80=99t
>understand why=2E
>
>What sort of wires would I need for my TR3A? I don=E2=80=99t run a radio =
in the
>car
>so that I don=E2=80=99t imagine interference would be an issue=2E I had =
thought
>I
>could just buy any old spark plug wires, but find I must make a number
>of
>choices: resistor or non-resistor wire, solid core or braided, type of
>cap,
>screw-in, etc=2E
>
>What does one need to know to select spark plug wires for a TR3A? Any
>recommendations?
>
>Thanks in advance,
>
>Dave MacKay
>
>1960 TR3A s/n 68639L
>
>Near Toronto, Canada
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<body>I used a 3 ohm Pertronix coil, and so far it has worked flawlessly=
=2E After a new Lucas coil died in less than a year, I won't use Lucas agai=
n=2E<br><br>Another alternative is to check with your FLAPS=2E I walked int=
o a NAPA store in a small town last year, and they had a 3 ohm coil on the =
shelf=2E It has worked fine so far as well (on a Ferguson tractor with the =
Standard engine)=2E Price was over twice that of a Pertronix from Amazon, b=
ut I got to try it that afternoon=2E<br><br>For wires, I went with classic =
copper core wire, combined with plug connectors that have suppression resis=
tors built in=2E The plug boots I used are normally sold for motorcycles, I=
found some 135 degree ones from NGK that fit nicely=2E On Amazon IIRC, but=
likely available at my friendly local motorcycle parts store :)<br><br>The=
other option I see is to convert completely to push-on connectors for the =
high tension leads and carbon core wires=2E There is a distributor cap avai=
lable with modern (well, more modern anyway) push-on terminals that fits ex=
actly in place of the original cap with the piercing screws=2E Used on MGB =
I believe, probably lots of other British cars as well=2E<br>-- Randall<br>=
<br><div class=3D"gmail_quote">On 13 June 2019 19:17:32 GMT-06:00, Dave Mac=
Kay <dave@mdmackay=2Eca> wrote:<blockquote class=3D"gmail_quote" styl=
e=3D"margin: 0pt 0pt 0pt 0=2E8ex; border-left: 1px solid rgb(204, 204, 204)=
; padding-left: 1ex;">
<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">Hello:</font></=
span></p>
<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">I=E2=80=99m loo=
king to replace the</font></span><span lang=3D"en-ca"></span><span lang=3D"=
en-ca"></span><span lang=3D"en-ca"> <font face=3D"Calibri">coil and</font><=
/span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D=
"en-ca"> <font face=3D"Calibri">spark plugs wires on my TR3A=2E The car has=
been converted to negative ground and has a Crane</font></span><span lang=
=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"> <font f=
ace=3D"Calibri">XR-700 electronic ignition=2E I=E2=80=99m a bit unsure abou=
t what I need=2E</font></span></p>
<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">1) Coil</font><=
/span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D=
"en-ca"> </span></p>
<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">U</font></span>=
<span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-ca=
"><font face=3D"Calibri">sing</font></span><span lang=3D"en-ca"></span><spa=
n lang=3D"en-ca"></span><span lang=3D"en-ca"> <font face=3D"Calibri">instru=
ctions that Randall posted several years ago</font></span><span lang=3D"en-=
ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"><font face=3D"C=
alibri">, I measured 3=2E8 o</font></span><span lang=3D"en-ca"></span><span=
lang=3D"en-ca"></span><span lang=3D"en-ca"><font face=3D"Calibri">hms</fon=
t></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=
=3D"en-ca"><font face=3D"Calibri"> and</font></span><span lang=3D"en-ca"></=
span><span lang=3D"en-ca"></span><span lang=3D"en-ca"> <font face=3D"Calibr=
i">10=2E8 volts</font></span><span lang=3D"en-ca"></span><span lang=3D"en-c=
a"></span><span lang=3D"en-ca"><font face=3D"Calibri"></font></span><span l=
ang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"> <fon=
t face=3D"Calibri">from my existing</font></span><span lang=3D"en-ca"></spa=
n><span lang=3D"en-ca"></span><span lang=3D"en-ca"><font face=3D"Calibri"> =
coil</font></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><=
span lang=3D"en-ca"><font face=3D"Calibri">=2E</font></span><span lang=3D"e=
n-ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"> <font face=
=3D"Calibri">That makes me think that I need a 12v non-ballasted coil=2E</f=
ont></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span la=
ng=3D"en-ca"> <font face=3D"Calibri">Is that correct?</font></span><span la=
ng=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"><font =
face=3D"Calibri"> </font></span></p>
<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">The connect</fo=
nt></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lan=
g=3D"en-ca"><font face=3D"Calibri">or for the high tension lead (to the dis=
tribution) is a push</font></span><span lang=3D"en-ca"></span><span lang=3D=
"en-ca"></span><span lang=3D"en-ca"> <font face=3D"Calibri">on; the t</font=
></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=
=3D"en-ca"><font face=3D"Calibri">wo small terminals on the coil</font></sp=
an><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D"en=
-ca"><font face=3D"Calibri"> are threaded so that the wires are</font></spa=
n><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-=
ca"> <font face=3D"Calibri">attached</font></span><span lang=3D"en-ca"></sp=
an><span lang=3D"en-ca"></span><span lang=3D"en-ca"><font face=3D"Calibri">=
with nuts (not Lucar-typ</font></span><span lang=3D"en-ca"></span><span la=
ng=3D"en-ca"></span><span lang=3D"en-ca"><font face=3D"Calibri">e connector=
s)=2E</font></span></p>
<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">I would welcome=
any recommendations as to coil</font></span><span lang=3D"en-ca"></span><s=
pan lang=3D"en-ca"></span><span lang=3D"en-ca"><font face=3D"Calibri">s=2E<=
/font></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span =
lang=3D"en-ca"> <font face=3D"Calibri">I was thinking of a replacement like=
</font></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span=
lang=3D"en-ca"> <font face=3D"Calibri">Moss</font></span><span lang=3D"en-=
ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"> <font face=3D"=
Calibri">#</font></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></=
span><span lang=3D"en-ca"><font face=3D"Calibri">143-220</font></span><span=
lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"><fo=
nt face=3D"Calibri"> (</font></span><span lang=3D"en-ca"></span><a href=3D"=
https://mossmotors=2Ecom/coil-ignition-push-on-coil-wire-lucas";><span lang=
=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"><u><font=
color=3D"#0563C1" face=3D"Calibri">https://mossmotors=2Ecom/coil-ignition-=
push-on-coil-wire-lucas</font></u></span><span lang=3D"en-ca"></span></a><s=
pan lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-ca">=
<font face=3D"Calibri">) or</font></span><span lang=3D"en-ca"></span><span =
lang=3D"en-ca"></span><span lang=3D"en-ca"> <font face=3D"Calibri">Moss # 1=
43-221 (</font></span><span lang=3D"en-ca"></span><a href=3D"https://mossmo=
tors=2Ecom/coil-ignition-push-on-coil-wire-aftermarket"><span lang=3D"en-ca=
"></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"><u><font color=3D=
"#0563C1" face=3D"Calibri">https://mossmotors=2Ecom/coil-ignition-push-on-c=
oil-wire-aftermarket</font></u></span><span lang=3D"en-ca"></span></a><span=
lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"><fo=
nt face=3D"Calibri">)=2E</font></span><span lang=3D"en-ca"></span><span lan=
g=3D"en-ca"></span><span lang=3D"en-ca"> </span></p>
<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">2) Spark plug w=
ires</font></span></p>
<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">I thought this =
would be simple, but it seems not=2E</font></span><span lang=3D"en-ca"></sp=
an><span lang=3D"en-ca"></span><span lang=3D"en-ca"> <font face=3D"Calibri"=
>I was planning to buy Moss</font></span><span lang=3D"en-ca"></span><span =
lang=3D"en-ca"></span><span lang=3D"en-ca"> <font face=3D"Calibri">571-005<=
/font></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span =
lang=3D"en-ca"><font face=3D"Calibri"></font></span><span lang=3D"en-ca"></=
span><span lang=3D"en-ca"></span><span lang=3D"en-ca"> <font face=3D"Calibr=
i">(</font></span><span lang=3D"en-ca"></span><a href=3D"https://mossmotors=
=2Ecom/ignition-wire-set-push-in-style-cobalt-brand"><span lang=3D"en-ca"><=
/span><span lang=3D"en-ca"></span><span lang=3D"en-ca"><u><font color=3D"#0=
563C1" face=3D"Calibri">https://mossmotors=2Ecom/ignition-wire-set-push-in-=
style-cobalt-brand</font></u></span><span lang=3D"en-ca"></span></a><span l=
ang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"><font=
face=3D"Calibri">)</font></span><span lang=3D"en-ca"></span><span lang=3D"=
en-ca"></span><span lang=3D"en-ca"> <font face=3D"Calibri">but was told tha=
t they weren=E2=80=99t appropriate b</font></span><span lang=3D"en-ca"></sp=
an><span lang=3D"en-ca"></span><span lang=3D"en-ca"><font face=3D"Calibri">=
ecause of my Crane unit=2E I didn=E2=80=99t understand why=2E</font></span>=
<span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-ca=
"><font face=3D"Calibri"></font></span><span lang=3D"en-ca"></span><span la=
ng=3D"en-ca"></span><span lang=3D"en-ca"> </span></p>
<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">What sort of wi=
res would I need for my TR3A</font></span><span lang=3D"en-ca"></span><span=
lang=3D"en-ca"></span><span lang=3D"en-ca"><font face=3D"Calibri">?</font>=
</span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=
=3D"en-ca"><font face=3D"Calibri"></font></span><span lang=3D"en-ca"></span=
><span lang=3D"en-ca"></span><span lang=3D"en-ca"> <font face=3D"Calibri">I=
don=E2=80=99t run a radio in the car so that I don=E2=80=99t imagine inter=
ference would be an issue=2E</font></span><span lang=3D"en-ca"></span><span=
lang=3D"en-ca"></span><span lang=3D"en-ca"> <font face=3D"Calibri"></=
font></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span l=
ang=3D"en-ca"> <font face=3D"Calibri">I had</font></span><span lang=3D"en-c=
a"></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"> <font face=3D"C=
alibri">thought I</font></span><span lang=3D"en-ca"></span><span lang=3D"en=
-ca"></span><span lang=3D"en-ca"><font face=3D"Calibri"> could ju</font></s=
pan><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D"e=
n-ca"><font face=3D"Calibri">st buy any old spark plug wires</font></span><=
span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"=
><font face=3D"Calibri">, but find I must make a number of choices:</font><=
/span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D=
"en-ca"> <font face=3D"Calibri">resisto</font></span><span lang=3D"en-ca"><=
/span><span lang=3D"en-ca"></span><span lang=3D"en-ca"><font face=3D"Calibr=
i">r or non-resistor wire, solid core or</font></span><span lang=3D"en-ca">=
</span><span lang=3D"en-ca"></span><span lang=3D"en-ca"> <font face=3D"Cali=
bri">braided, type of cap</font></span><span lang=3D"en-ca"></span><span la=
ng=3D"en-ca"></span><span lang=3D"en-ca"><font face=3D"Calibri">,</font></s=
pan><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D"e=
n-ca"> <font face=3D"Calibri">screw-in,</font></span><span lang=3D"en-ca"><=
/span><span lang=3D"en-ca"></span><span lang=3D"en-ca"> <font face=3D"Calib=
ri">etc=2E</font></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></=
span><span lang=3D"en-ca"><font face=3D"Calibri"></font></span><span lang=
=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"> </span>=
</p>
<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">What</font></sp=
an><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D"en=
-ca"> <font face=3D"Calibri">does one need to know to select</font></span><=
span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"=
> <font face=3D"Calibri">spark plug wires</font></span><span lang=3D"en-ca"=
></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"> <font face=3D"Cal=
ibri">for</font></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></s=
pan><span lang=3D"en-ca"> <font face=3D"Calibri">a TR3A?</font></span><span=
lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"><fo=
nt face=3D"Calibri"></font></span><span lang=3D"en-ca"></span><span lang=3D=
"en-ca"></span><span lang=3D"en-ca"> <font face=3D"Calibri">Any recommendat=
ions?</font></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span>=
<span lang=3D"en-ca"></span></p>
<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">Thanks in advan=
ce,</font></span></p>
<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">Dave MacKay</fo=
nt></span></p>
<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">1960 TR3A s/n 6=
8639L</font></span></p>
<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">Near Toronto, C=
anada</font></span></p>
</blockquote></div></body></html>
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