Technique for prepping spark plugs before gapping

[Cal Cruzer]

Don't know if anyone is interested, butI used to use this technique on my mustang and I just did it on my plugs over the weekend when I gapped them down. MM&FF magazine, one of the Mustang mags, did a dyno test just doing this between pulls and they were able to show a 5 # ft increase.

Anyhow, this is what they did.

You cut the ground electrode back with a Dremel tool roughly 1/2 to 1/3 so the center electrode is exposed almost completely. Then you round the corners off. This causes the plug to fire to the side exposing the "flame" 100% and not shielded by the ground electrode.

This is a technique NASCAR has been using for years. Bosch now picked up on the idea with their new plugs that have four ground posts on the side exposing the center electrode totally.

Amazingly, you "feel" a noticable throttle response by doing this and lessens the need to index the plugs

from this site http://www.corral.net/forums/showthr...+gap+electrode

[rice_killing_GT]

Sorry Cal had to do it.

[JPMS GT]

Thanks Cal, now you two back to work!!

John

[Cal Cruzer]

quote:Originally posted by rice_killing_GT



Sorry Cal had to do it.

R_K_GT, guess you may be right. I can visualize it becasue I read the mag first and they had a pic. I will see if I still have it, but I doubt it. I am going to buy new plugs soon just to have something tp do to my car and I will take a pic if I can't find the article.

[Mike-in-Orange]

Found this pic on the thread Cal originally linked to. I sorta figured he'd want us to look that thread over or else he wouldn't have mentioned it, right??? R_K_GT, shame on you!

[rice_killing_GT]

quote:Originally posted by Mike-in-Orange

Found this pic on the thread Cal originally linked to. I sorta figured he'd want us to look that thread over or else he wouldn't have mentioned it, right??? R_K_GT, shame on you!

LOL, sorry I just read the first post on that link and never went any further.