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Resistor or Non resistor ?

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Old Jul 30, 2008 | 09:03 AM
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conv90
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Default Resistor or Non resistor ?

I'm using Champion RC7YC, and I used in the past RC9YC Champion spark plugs.

Now I'm searching something in the same heat range (the RC7YC) it's quite cold.
Now I'm seeing that the Champion RC7YC is NON resistor (Summit source and http://www.championsparkplugs.com/re....asp?pid=rc7yc )
So I checked the RC9YC on the same sources and on Summit it says it's a NON resistor and at www.championsparkplugs.com it's a resistor ..

The RC9YC is reccommended by many heads brands...


RC12YC are advertised as RESISTOR (both on summit and www.championsparkplugs.com)

How 3 spark plug with the same similar part number (only the heat range should chanege.. RC and YC is the same) can be different in the suppression EFI management??

Is there a sure way to tell if the RC7YC is a resistor or not?
-Beppe-
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Old Jul 30, 2008 | 09:07 AM
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Default

Originally Posted by conv90
I'm using Champion RC7YC, and I used in the past RC9YC Champion spark plugs.

Now I'm searching something in the same heat range (the RC7YC) it's quite cold.
Now I'm seeing that the Champion RC7YC is NON resistor (Summit source and http://www.championsparkplugs.com/re....asp?pid=rc7yc )
So I checked the RC9YC on the same sources and on Summit it says it's a NON resistor and at www.championsparkplugs.com it's a resistor ..

The RC9YC is reccommended by many heads brands...


RC12YC are advertised as RESISTOR (both on summit and www.championsparkplugs.com)

How 3 spark plug with the same similar part number (only the heat range should chanege.. RC and YC is the same) can be different in the suppression EFI management??

Is there a sure way to tell if the RC7YC is a resistor or not?
-Beppe-
The 7,9,and 12 are heat ranges 7 being the coolest.

The R7 is a resistor plug. The "R" in the champion part numbers represents resistor.

RN-resistor
12-heat range
Y-thread depth if I remember correctly
c- Copper core
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Old Jul 30, 2008 | 09:09 AM
  #3  
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The 'R' at the beginning of the code should be for "Resistor"...
I really don't know how some web sites can advertise it for a NON resistor...
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Old Jul 30, 2008 | 09:10 AM
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Originally Posted by conv90
The 'R' at the beginning of the code should be for "Resistor"...
I really don't know how some web sites can advertise it for a NON resistor...
The websites are wrong.

http://www.spark-plugs.co.uk/pages/t...ymbol_code.htm
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