RCU Forums - Spark Plug numbers

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NavyE6FE

03-06-2003 03:26 AM

Spark Plug numbers

Anybody know a good web site that explains all the different plug designations?
Some of it I understand( R=resistor) and the number is heat range.
But I'm looking for more of an understanding of how it all works.
My US 41 manual says to use a RCJ7Y but I pulled a RCJ8Y out of it. My LHS's computer says to use RCJ8Y.

Steve

Antique

03-06-2003 04:31 AM

Spark Plug numbers

Either works OK..Or...
Bosch WSR6F
NGK BPMR6
Not a lot of difference, use what you can find....

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