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Discussion Starter · #1 ·
Not the sexiest modification, but something I learned while working in area 51.... Indexing plugs is probably old hat to many here, but if not, it may be something you want to try. "Indexing" simply means using shims-washers to position the gap of the plug to fire in a consistent and it's most efficient direction.... Mine are facing directly toward the intake. I dunno if it makes a difference, but it makes me feel better
indexing spark plugs



Edit: racers will index using the method above everyone else will just use shims-washers made for indexing.... available at any auto parts emporium
 

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Discussion Starter · #6 ·
I'll betcha the e3s could use some indexing...interesting plug design but there is no way they are going to create an even pattern of combustion from that web of a strap. Iriduims kind of make all this mute with no strap over the elctrode... how much do e3s cost? I'll try anything new if it's not overly pricey.. indexing is basically free, and it can't hurt.





For a good time, Try Dimpling your strap, bend it up, and put a small dimple w a drill bit (maybe .02 deep x 1/16 round, right over where the center electrode would be pointed... re gap to spec, index plugs toward the squeeze side of cyl and race on!
 

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Discussion Starter · #9 ·
I don't see how indexing the spark plug would make any difference at all in an engine design where the plug is oriented in the top center of the cylinder. At the firing cycle the spark would be in the same spot and the post orientation has no effect on firing. You're not going to get a 2 way burn in a CX engine unless you have a hot spot in the engine, indexing won't do anything for that.




I was looking for a picture of a head to post and found this... http://members.unitewireless.com/~williamwilson/CX_Rebuild_3.asp





His head illustrates the idea of firing directly into or away from the ex valves. Note how dirty his intakes are while the ex are relatively clean. I wonder what it would look like if his plug was oriented 90degrees facing directly at one pair of intake and ex valves and away from the other. I at least think it does not hurt anything to have both plug gaps oriented in the same direction. If I had 22$ for Iridiums right now...I know my plugs would be indexed.



Cobrahm, at least It's cheaper than snake oil or that collection of your "elixer's"
still laughing at that... Mad Dog 2020




now I gotta go back to that site and figure out how to get to his homepage... I wonder if it belongs to a CX forum member?
 
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