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Spark plug heat range chart

What a colder plug for a champion RC12ECC by 1 or 2 lower

Posted by koekoehler on


5 Related Answers



  • 85239 Answers

SOURCE: resistor vs non-resistor spark plugs

resistor spark plugs make zero diff in the way the engine runs, they supress radio noise only, this electrical noise can interfere with the cars radio and other electronics.

Posted on Aug 29, 2009


ZJ Limited

  • 17970 Answers

SOURCE: where can i find champion A-6G spark plugs for my 1986 Ferrari

Check the "cross reference:
Champion / NGK
A6 / DR8EA

Visit here 1986 FERRARI 328 GTS 3.2 V8 F105CB FI

Good luck.

Posted on Sep 04, 2009


John Oughton

  • 40 Answers

SOURCE: I've got a 1977 dodge sportsman mb 400 with a

The recommended plug for this motovehicle is the Autolite ASP 85. A number of Champion plugs should fit, including: RJ12YC, J12YC, J11Y, UJ12Y.

Posted on Nov 25, 2014

Ted Maxwell

  • 3519 Answers

SOURCE: what plug i need to replace the older L-78 champion spark plug that worked so good for me in my MC91a kart engine

Hi David:
Here's a link that will give you all of the crosses:

Posted on Mar 21, 2016


S Sigs

  • 406 Answers


NGK B6ES = Champion N5

Spark plug cross reference

Posted on Jul 29, 2016

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2 Answers

What is the correct NGK spark plug for my 1967 Triumph Tiger

I get two numbers...,
L6G or a L82C Champions

the L is the reach (1/2") and the numbers are the heat range.. On a Champion spark plug the lower the number the COLDER the spark plug.. the higher the number the hotter the spark plug,, If you look at the spark plug hole, you should be able to tell if the length of the threads in the head are about 1/2" deep..I would start with the L6 if you can get it.. if it runs without fouling.. keep running it.. if it fouls..looks black and sooty.. go to the L82.

Jun 13, 2017 | Triumph Motorcycles

1 Answer

A champion plug 12jyc what moter will it fit in

plugs for 350 block , 4 barrel carby 1967-19710 is j12yc
all plug descriptions have a series of letters number and can download the champion chart from the champion plug site
it works like--- this any plug that will screw in the hole will provide a spark
you have to measure the thread length in the head as the plug thread cannot be longer or shorter that that length
next the sealing is by taper or copper gasket so the plug will require the same as is in the head ( flat or taper ) whether the electrode protrudes or not depends on the application ( High speed engine etc)
there are factors that come into it as well like the heat range ---cold plugs for new engines and hot plugs for worn engines to burn the oil

Mar 13, 2017 | Cars & Trucks

1 Answer

NGK y-116v glow plug change over to Champion glow plug what part number???

very difficult to get a cross reference for champion
I did come across a code to explain the part number
it reads like this the Y denotes sheathed type earthed through the plug body
the first 1 is the thread diameter + 10 mm
the next 1 is the battery voltage ---4-12 volts
6 is the serial number
V denotes it is fast heat or rapid glo type
reference page 114
so if you can get a champion glo plug chart , you are looking for a glo plug that is earthed through the plug body, is 10 mm thread dia is for 12 volts ( serial no is optional , and is a fast or rapid glo type
take the glo plug to a diesel specialist repair shop and see if they can cross reference or have a plug that will do the job
consider it doesn't have to be champion brand

Oct 01, 2016 | Ngk Commercial Series Spark Plug, glow...

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Can I replace my Champion CJ2Y spark plug out of my Paulon chainsaw with a Champion EZ start 5861 plug?

Find a spark plug cross reference chart online and lookup your application.

Oct 02, 2014 | Garden

1 Answer

Spark plug gap settings chart


The spark plug gap depends from the engine make/model, not from the spark plug type.
Usually all engines will run with a gap between 0.7 and 1.00mm

Jul 30, 2014 | Champion Spark Plugs Marine Spark Plugs...

1 Answer

Spark plug gap settings chart

gap is defined by motor your putting the plug in

Jul 17, 2014 | Champion Spark Plug / Champion/rl95yc

1 Answer

Ngk spark plug gap chart

usually around .028" - .032"..

r = resistor
b=thread size = 14mm
7 = heat range - NGK, the lower the number the hotter the plug. Other mfg. are opposite - higher number=hotter
h = thread length =1/2"

These are THE important ones... the rest are mfg. specifics

May 25, 2014 | Mercury Boating

1 Answer

Resistor vs non-resistor spark plugs

resistor spark plugs make zero diff in the way the engine runs, they supress radio noise only, this electrical noise can interfere with the cars radio and other electronics.

Aug 29, 2009 | 2002 Ford Mustang

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