We start at the copper plug. The original spark plug.





Copper is an excellent conductor of electricity but doesn't offer the life of most other plugs.

A few copper variants have hit our market, the Chinese didn't like the low lifespan of copper and they created a plug that I don't think ever made it to mass production but looks interesting enough.





We've all seen the splitfire.





Not many of us have seen the Halo plug though.





The E3 plug.





A few designs have taken the idea of getting a nice and open path to the combustion chamber just a little bit further.





A company in Mexico makes (made) this Technica plug.





The Torquemaster Plug is available online at a few places. This type of plug uses the surface-gap discharge method. Surface-gap gets its benefits because the spark takes less voltage to travel a long distance over the surface of the plug then it does to go through the air. This gives you more spark exposure area.





A surface-gap discharge plug that is also long life is the Bosch Platinum +2 and 4 plugs.





Then you have your typical Platinum plug.





And your Iridium.



Finally, you have the Pulstar plug. This plug differs from the plugs above by incorporating a peaking capacitor into the plug.

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Scotty Hall
Bartlesville, OK
2001 Pontiac Grand Prix GTP
It whines a lot, but I like it.

The only limitation you will ever face in life is yourself!

I like this. Any more indepth history on the above plugs? What they were used in? Gimmick plugs like JCWhitney came out with back in the 70's? Legit ones? etc. I want to see and hear more.

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04 Indy SS build #972
XP, TOG's, Lightning injectors, 2.8 pulley, 105 CC springs, Wizaired, 3.29 gears, tripleedgeperformance ported blower, machined LIM, 180* tstat, RS12YC@.053, FP rewire, Alt rewire, stage 1 V boost, PRJ wires, Stage 2 IC

Well the main thing with plugs is their interference with exposure to combustion chamber. You can try all kinds of configurations, but it boils down to really the material of the plug and its ability to expose the spark to the combustion chamber. Thats why I like the BRISK plugs so much. They have to be quite possibly the best designed plug I have ever saw.

As for what the plugs were used in, Im not sure, I dont have any info to that effect. The only real gimmick plug I have seen in recent times were the Pulstar plug. I guess there's a chance I could be wrong about it, but I dont think so given the numbers they claim. They would have to send me a set and let me use them to recant anything Ive said about them.

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Scotty Hall
Bartlesville, OK
2001 Pontiac Grand Prix GTP
It whines a lot, but I like it.

The only limitation you will ever face in life is yourself!

That gimmick plug JC sold was a 4 prong plug and I thought they called it a splitfire. It was a pretty big joke back in the day. Hmmm I wonder if they are still peddling them along with the tornado? Off to search again. Rainy vaction day FTL

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04 Indy SS build #972
XP, TOG's, Lightning injectors, 2.8 pulley, 105 CC springs, Wizaired, 3.29 gears, tripleedgeperformance ported blower, machined LIM, 180* tstat, RS12YC@.053, FP rewire, Alt rewire, stage 1 V boost, PRJ wires, Stage 2 IC

Scotty, what particular model of the Brisk plug do you use? I'm using TR6IX plugs and am ready to change due to poor performance.

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.................................................. .........

'97 GTP: 3.4, 3" DP, P-Log, TR55IX, FWI, 160*, Ported S/C and heads, XP, 105's, HPT

Very intresting info....good job scotty!

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1999 Silver GTP~HP Tuners~XP cam~ZZP FS Intercooler~#4 FMHE~ZZP 78mm Billet Throttlebody~LQ4 MAF~Lucas 42.5's~ZZP SS Headers~2.8 MPS~PRJ fuel logs~Ported & Polished S/C~TDCRacing FWI ~Built Tranny-3.29's-7/8's chain-Intense forged Input Shaft~

Running mid-high 12's
Get you're TDCRacing Fenderwell Intake Today!

He has the GOR15LGS. Don't ask me how I know.

__________________
04 Indy SS build #972
XP, TOG's, Lightning injectors, 2.8 pulley, 105 CC springs, Wizaired, 3.29 gears, tripleedgeperformance ported blower, machined LIM, 180* tstat, RS12YC@.053, FP rewire, Alt rewire, stage 1 V boost, PRJ wires, Stage 2 IC

Yeah, and if you wanna know how much power they help you make, search for my tranny carnage thread

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Scotty Hall
Bartlesville, OK
2001 Pontiac Grand Prix GTP
It whines a lot, but I like it.

The only limitation you will ever face in life is yourself!

is that the thread where ya'll were blaming the plugs for your tranny messin up?

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1999 Silver GTP~HP Tuners~XP cam~ZZP FS Intercooler~#4 FMHE~ZZP 78mm Billet Throttlebody~LQ4 MAF~Lucas 42.5's~ZZP SS Headers~2.8 MPS~PRJ fuel logs~Ported & Polished S/C~TDCRacing FWI ~Built Tranny-3.29's-7/8's chain-Intense forged Input Shaft~

Running mid-high 12's
Get you're TDCRacing Fenderwell Intake Today!

Yeah man, those suckers so woke up the engine that I proceeded out on a test drive and shredded my differential...

__________________
Scotty Hall
Bartlesville, OK
2001 Pontiac Grand Prix GTP
It whines a lot, but I like it.

The only limitation you will ever face in life is yourself!