Time to Change Plugs
Le Mans Master
Joined: Mar 2002
Posts: 5,889
Likes: 2
From: Castro Valley Calif.
St. Jude Donor '03 thru '26
Re: Time to Change Plugs (STL94LT1)
http://www.gmtips.com/3rd-degree/dox...tion/spark.htm
see if this link works. i wasn't too sure about exactly how to do this mod either. if the link doesn't work, type "spark plug electrode modification" into your search. see, i am more than just another pretty face! :lol:
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Verdad Gallardo
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Re: Time to Change Plugs (STL94LT1)
I had read about this trick in TPIS "Insider Hints" and in Dave Emanuel's book on SBCs.
Since then I've been running them in both the IROC and the Vette.
There's a sketch on my site.
Since then I've been running them in both the IROC and the Vette.
There's a sketch on my site.
Le Mans Master
Joined: Feb 2002
Posts: 7,858
Likes: 2
Re: Time to Change Plugs (CAJUN C4)
I'm not saying it doesn't work, but I wonder why no plug company hasn't started making out of the box cut back plugs like this and charging a premium price? Isn't this sort of the theory (expose more spark kernel to the air/fuel charge) behind the Bosch +4's that many claim to be gimmick plugs?
Instructor
Joined: Aug 2002
Posts: 198
Likes: 0
From: Yucaipa CA
Re: Time to Change Plugs (Lone Ranger)
My son in law just purchased some Autolite Racing Plugs to replace the V-Power NGKs in his '67 Nova race car. His Nova is equipped with a high performance 350 small block. The NGKs were not available so the parts store suggested the Autolites as replacements. I had just discussed this forum with him and we talked about modifying his new plugs.
When we opened the box, without reading the small print on the box, we were surprised to find they had cut back ground electrodes.
Autolite now sells these as Racing plugs. His Autolite Racing plugs are part number AR134.
When we opened the box, without reading the small print on the box, we were surprised to find they had cut back ground electrodes.
Autolite now sells these as Racing plugs. His Autolite Racing plugs are part number AR134.
Thread Starter
Safety Car
Joined: Feb 2000
Posts: 3,771
Likes: 0
From: MANDEVILLE, LA La
Re: Time to Change Plugs (CAJUN C4)
WOW!!!! I Can't even believe what a difference....Seriously, I can Really feel a set of the pance difference with this Modification....Un-Real...Took me about a half hour with my Dremel. You really have to do this..... 8-10 free H.P.
Dennis
Dennis
Le Mans Master
Joined: Feb 2002
Posts: 7,858
Likes: 2
Re: Time to Change Plugs (CAJUN C4)
Curtis...It will work on any model.
Thread Starter
Safety Car
Joined: Feb 2000
Posts: 3,771
Likes: 0
From: MANDEVILLE, LA La
Re: Time to Change Plugs (Lone Ranger)
See The Poat above from "Caboboy"
Use A/C 's Copper or otherwise, I used my Dremel bent out the electrode a bit, cut to where I wanted and Gapped .050" (.045" std) File to de-bur. you don't want any sharp edges etc.
Unbelievable the difference it made.
Use A/C 's Copper or otherwise, I used my Dremel bent out the electrode a bit, cut to where I wanted and Gapped .050" (.045" std) File to de-bur. you don't want any sharp edges etc.
Unbelievable the difference it made.
Melting Slicks
Joined: Sep 2001
Posts: 3,420
Likes: 0
From: Lancaster County PA
St. Jude Donor '06-'07-'08-'09-'10
Re: Time to Change Plugs (Lone Ranger)
Isn't this sort of the theory (expose more spark kernel to the air/fuel charge) behind the Bosch +4's that many claim to be gimmick plugs?