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Spark plugs for A65'S?? #365028
03/26/11 9:33 pm
03/26/11 9:33 pm
Joined: Nov 2010
Posts: 725
Sacramento California
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Rusty Goose Offline OP
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Rusty Goose  Offline OP
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Sacramento California
I need plugs for my '66 A65L (twin carb 1970 head, using Sparx ignition). NGK's seem to be easily available to me. What # am I looking for. Or is there another brand I should consider?

I'm not trying to start anything as inflamitory as an oil thread here!

Rusty


1967 A65 Lightning
1967 Triumph T20 Mountain Cub
1967 Moto Guzzi V7
1969 B44 Victor Special
1966? Royal Enfield Interceptor
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Re: Spark plugs for A65'S?? [Re: ] #365054
03/27/11 1:00 am
03/27/11 1:00 am
Joined: Feb 2003
Posts: 2,904
Ohio
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Rickman Offline
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Ohio
Generally,
I like B8ES NGK's for my A10's and A65's.
For me, Champion's always foul out.

More'n a dozen years ago, I ran accross a bargain on ND plugs, W20ES-U, and W22ES-U, and I got several boxes at the time. They've been working fine for me all this time. I still have a few boxes left. Looks like I have plug stock for a few years yet...

Re: Spark plugs for A65'S?? [Re: Rusty Goose] #365082
03/27/11 5:07 am
03/27/11 5:07 am
Joined: Dec 2002
Posts: 3,245
arkansas
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leon bee Offline
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arkansas
I hate NGKs, they always foul. Only Champion for me, N3C, maybe N4C.

Re: Spark plugs for A65'S?? [Re: leon bee] #365095
03/27/11 9:33 am
03/27/11 9:33 am
Joined: May 2004
Posts: 3,674
Sydney Australia
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BSA_WM20 Offline
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Sydney Australia
As a general rule modern "fuels" require one grade hotter than specified for real petrol.
The more time you spend running slowly or at idle the hotter plug you will need.
This is simply to prevent the heavy oilly gunk in the fuel condensing out on your plug causing it to foul.
On a club run I go 2 grades hotter while n long trips I usually go only 1 grade hotter which in the M20 means a BP5HS or BP6HS.
The actual equivalent plug would be 1/2 way between a B7 & B8.

Check if you can run the projecting electrodes without fouling on your piston by putting a lump of plasticine around .040" to .050" on the end of the plug & kicking the motor over.

Platinimum or any other "exotic" metal plugs will foul less than standard plugs as standard plugs were designed to burn stuff called "petrol" which sadly is no longer available.


Bike Beesa
Trevor
Re: Spark plugs for A65'S?? [Re: Rusty Goose] #365125
03/27/11 2:11 pm
03/27/11 2:11 pm
Joined: Nov 2010
Posts: 725
Sacramento California
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Rusty Goose Offline OP
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Rusty Goose  Offline OP
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Sacramento California
What spark plug caps should I use. I assume a resistor type with the EI. 3 ohm, 5 ohm??


1967 A65 Lightning
1967 Triumph T20 Mountain Cub
1967 Moto Guzzi V7
1969 B44 Victor Special
1966? Royal Enfield Interceptor
Re: Spark plugs for A65'S?? [Re: Rusty Goose] #365129
03/27/11 2:37 pm
03/27/11 2:37 pm
Joined: Mar 2006
Posts: 3,692
gastonia nc
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raf940 Offline
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gastonia nc
my A65 with Pazon and HD dual outlet coil....Lucas bumblebee solid copper core wire..Champion 1960s style bakelite caps with resistor 'pill' removed...Champion N4C...but that's just me


1972 Triumph T120
1968 BSA A65
1968 MGB Roadster
1979 Chevrolet Camaro Berlinetta
1969 Honda Mini Trail
1939 farmall f30 tractor
2004 Honda Shadow Aero
1972 BSA Thunderbolt
1975 yamaha xs650b
1972 Norton commando project
Re: Spark plugs for A65'S?? [Re: Rusty Goose] #365254
03/27/11 10:51 pm
03/27/11 10:51 pm
Joined: Oct 2008
Posts: 4,947
Gnashville
DavidP Online content

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DavidP  Online Content

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Gnashville
I use N4c in my '71, though I have also used B7ES. Zelda seems to like the Champions just a little bit better.
I also have the Sparx EI. I have used 5K resistor caps, but it gets a fatter spark with non-resistor caps. I currently use NGK model LZFH non-resistor caps with copper-core wires.

As I understand it, resistor caps are only needed with a digital EI or digital regulator (or if you listen to the radio while riding. laugh )


Stepping on others doesn't make you stand tall.

71 A65L "Zelda"
92 BMW K100rs "Gustav"
72 T120V cafe project "Mr. Jim"
Re: Spark plugs for A65'S?? [Re: Rusty Goose] #365279
03/28/11 1:52 am
03/28/11 1:52 am
Joined: Nov 2010
Posts: 725
Sacramento California
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Rusty Goose Offline OP
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Rusty Goose  Offline OP
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Posts: 725
Sacramento California
Thanks DaveP, that's what I needed. I was wondering about interference with the ei. Good to know.

Is it bad taste to have Champion plugs with NGK caps?????


1967 A65 Lightning
1967 Triumph T20 Mountain Cub
1967 Moto Guzzi V7
1969 B44 Victor Special
1966? Royal Enfield Interceptor
Re: Spark plugs for A65'S?? [Re: Rusty Goose] #365384
03/28/11 6:11 pm
03/28/11 6:11 pm
Joined: Dec 2002
Posts: 3,245
arkansas
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leon bee Offline
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arkansas
I have some NGK caps on my dirty rat bike.

Re: Spark plugs for A65'S?? [Re: Rusty Goose] #365576
03/29/11 6:23 pm
03/29/11 6:23 pm
Joined: Jul 2007
Posts: 68
Maryland
Porrick Offline
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Porrick  Offline
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Joined: Jul 2007
Posts: 68
Maryland
NGK B8ES and resistor caps for my 66 A65L with sparks EI and HO alternator and dual output coil. Nice fat spark and no problems.


Porrick
'66 A65L

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