Sparkplugs
Senior Member
True Car Nut
Joined: Jan 2005
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From: Montevideo, MN MWBF '05, '06, '07 WCBF '06 '07 survivor
Originally Posted by willwren
Be careful out there. 
Big difference, and a waste of money when you have to change out Plats in a month for Irridiums.
Copper plugs are preferred over Irridiums in Supercharged cars. They dissipate heat more quickly.
NGK TR55 gapped at .055" for one heatrange colder
NGK TR6 gapped at .050" for 2 heatranges colder
Or the Autolite plugs (copper).
Big difference, and a waste of money when you have to change out Plats in a month for Irridiums.
Copper plugs are preferred over Irridiums in Supercharged cars. They dissipate heat more quickly.
NGK TR55 gapped at .055" for one heatrange colder
NGK TR6 gapped at .050" for 2 heatranges colder
Or the Autolite plugs (copper).
Junior Member
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Joined: Aug 2002
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Originally Posted by BillBost37
Keep the iridiums...they will be fine. I run them in both cars. If you start modding super heavy like Zilla..then start thinking copper.
DINOSAURUS BOOSTUS
Expert Gearhead
Joined: Mar 2005
Posts: 41,391
Likes: 30
From: Enfield, CT
Originally Posted by willwren
Originally Posted by BillBost37
Keep the iridiums...they will be fine. I run them in both cars. If you start modding super heavy like Zilla..then start thinking copper.
He should be out working on his car!
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I spent 2 hours on the phone with NGK (who makes the AC Delco Plugs) and took notes. That'* where the Techinfo article came from, and much of my own knowledge.
A copper plug will last longer and perform better in your cars than an Irridium, and far better than Platinum.
NEVER run Bosch. Bosch ANYthing.
A copper plug will last longer and perform better in your cars than an Irridium, and far better than Platinum.
NEVER run Bosch. Bosch ANYthing.
Senior Member
True Car Nut
Joined: Jan 2005
Posts: 3,882
Likes: 2
From: Montevideo, MN MWBF '05, '06, '07 WCBF '06 '07 survivor
Originally Posted by willwren
I spent 2 hours on the phone with NGK (who makes the AC Delco Plugs) and took notes. That'* where the Techinfo article came from, and much of my own knowledge.
A copper plug will last longer and perform better in your cars than an Irridium, and far better than Platinum.
NEVER run Bosch. Bosch ANYthing.
A copper plug will last longer and perform better in your cars than an Irridium, and far better than Platinum.
NEVER run Bosch. Bosch ANYthing.
Senior Member
True Car Nut
Joined: Jan 2005
Posts: 3,882
Likes: 2
From: Montevideo, MN MWBF '05, '06, '07 WCBF '06 '07 survivor
605'* back in this morning while it was cool (engine and outside temp). Am going out to check seat of the pants dyno. Maybe vids and pics of something new later today.
DINOSAURUS BOOSTUS
Expert Gearhead
Joined: Mar 2005
Posts: 41,391
Likes: 30
From: Enfield, CT
Originally Posted by sonoma_zr2
605'* back in this morning while it was cool (engine and outside temp). Am going out to check seat of the pants dyno. Maybe vids and pics of something new later today.