Champion J4J

JB

Honorary Moderator Emeritus
Joined
Mar 25, 2001
Messages
45,907
Re: Champion J4J

Which is the typo, '67, the title or the text?

For what it may be worth the J4C is a replacement for the J4J, too. :)
 

flabum

Chief Petty Officer
Joined
Feb 17, 2007
Messages
567
Re: Champion J4J

The "C" in the part number means Copper..... that is the difference ... a copper electrode...longer lasting in a marine enviroment.
 

MikDee

Banned
Joined
Jun 6, 2007
Messages
4,745
Re: Champion J4J

J6, is a hotter plug then a J4, but it shouldn't make much difference, I used to run J6's instead of O.E. J4's in my 1962 40hp big twin Evinrude, my friends, & I found they give a little more power, and stay cleaner longer then J4's, a better burn.
 
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