Racing plugs

gixxer750

2jzget comingsoon!
Mar 30, 2005
2,333
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Mississippi
I did a search and didn't find this, but maybe you guys should try autolite racing plugs. solid copper electrodes. I've had them in my sup for about 2000 miles now, and they seem to work great. I know they don't last long, but niether do regular autolites. You can get them from advance auto parts, part number is AR3923 . They have to order them, but if you keep your reciept, you can make them stand behind the 1 year warranty.
 

CPT Furious

Now MAJ FURY!
Mar 30, 2005
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KDOV
Yeah, I saw that part number similarity, too. I wonder what the diff is between the regular and the "racing"?
 

shaeff

Kurt is FTMFW x2!!!!
Staff member
Super Moderator
Mar 30, 2005
10,589
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Around
i love my 3923's. (used them because i saw them on mkiiitech.com, thanks dr.j!)

better than any of the other plugs i tried. i wonder how the racing ones differ in performance.

-shaeff
 

gixxer750

2jzget comingsoon!
Mar 30, 2005
2,333
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Mississippi
the difference is that the racing plugs are solid copper electrodes, which has better conductivity than almost any other metal(except for gold) the down side is that the arcing erodes the electrodes away quite quickly(4000-7000 miles)
 

DEFIANT 7M

101MM stroke of INSANITY!
Mar 30, 2005
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Nashville/Miami
The Autolite race plug has a minimum length of side electrode with a rounded end terminating over the side of the center electrode. Just what is needed for a nitrous application. I've used them for along time.
 
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