NGK Iridium Plugs
Thread Starter
Burning Brakes
Joined: Jan 2005
Posts: 1,027
Likes: 2
From: Baltimore MD
St. Jude Donor '08
NGK Iridium Plugs
I just installed my first set of plugs in a corvette today and WOW what fun! Actually they were not as bad as I figured they would be but they rank up there with the most difficult. I put plugs in a 92 firebird that was almost as bad. At 80k miles I didn't think I really needed plugs but the car definately idles smoother with the new ones. I want to put on wires next but that looks like more of a challenge than the plugs!
Last edited by pwoolford; Mar 13, 2005 at 08:32 PM.
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
The factory AC Delco platinums are junk. They die by 40k miles... total junk.
I like NGK. Very nice plug.
When I change them, I find that a sparkplug socket and a 3/4" offset box wrench is a God send.
I like NGK. Very nice plug.
When I change them, I find that a sparkplug socket and a 3/4" offset box wrench is a God send.
Thread Starter
Burning Brakes
Joined: Jan 2005
Posts: 1,027
Likes: 2
From: Baltimore MD
St. Jude Donor '08
I used the box wrench for a couple and also a 1/2" ratchet with a shallow socket on the end of the spark plug socket. Next time I am ordering the sidewinder speed wrench. That would have been real nice for #8!
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
Originally Posted by pwoolford
I used the box wrench for a couple and also a 1/2" ratchet with a shallow socket on the end of the spark plug socket. Next time I am ordering the sidewinder speed wrench. That would have been real nice for #8!
After that, I have it down to like 1 hour! Practice makes perfect!!!
Melting Slicks
Joined: May 2003
Posts: 3,490
Likes: 68
From: Hewitt NJ
Originally Posted by bogus
The factory AC Delco platinums are junk. They die by 40k miles... total junk.
I like NGK. Very nice plug.
When I change them, I find that a sparkplug socket and a 3/4" offset box wrench is a God send.
I like NGK. Very nice plug.
When I change them, I find that a sparkplug socket and a 3/4" offset box wrench is a God send.
Le Mans Master
Joined: Feb 2002
Posts: 7,858
Likes: 2
Originally Posted by pwoolford
I just installed my first set of plugs in a corvette today and WOW what fun! Actually they were not as bad as I figured they would be but they rank up there with the most difficult. I put plugs in a 92 firebird that was almost as bad. At 80k miles I didn't think I really needed plugs but the car definately idles smoother with the new ones. I want to put on wires next but that looks like more of a challenge than the plugs!
It still has not appeared in the C4 Tech Tips. Don't know why, plug wire changing on the LT1 is a frequent topic in C4 Tech/Performance. I figured a detailed tech tip on it would have been welcomed by the admin(s).
Last edited by Lone Ranger; Mar 14, 2005 at 01:57 PM.
Race Director
Joined: Feb 2003
Posts: 11,671
Likes: 20
From: Lake Wylie SC
Originally Posted by Lone Ranger
Way back in the fall of last year, I submitted a longish and detailed step-by-step to C4 Tech Tips, of how I changed wires on my '95 without having to remove the serpentine belt or alternator to do the driver side, which is the difficult side.
It still has not appeared in the C4 Tech Tips. Don't know why, plug wire changing on the LT1 is a frequent topic in C4 Tech/Performance. I figured a detailed tech tip on it would have been welcomed by the admin(s).
It still has not appeared in the C4 Tech Tips. Don't know why, plug wire changing on the LT1 is a frequent topic in C4 Tech/Performance. I figured a detailed tech tip on it would have been welcomed by the admin(s).
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Le Mans Master
Joined: Feb 2002
Posts: 7,858
Likes: 2
Originally Posted by pwoolford
Lone Ranger, can you email me the steps? Wires don't look like much fun at all!
Race Director
Joined: Aug 2003
Posts: 13,421
Likes: 8
From: Lake Mary Florida
Originally Posted by pwoolford
Lone Ranger, can you email me the steps? Wires don't look like much fun at all!
Should have done it when you did the plugs. You'll need to remove the drive belt and tensioner. The tensioner has a single bolt with a large locator pin on the rear to help seat it on installation.
Oh yes and an 11" bent needle nose pliers make inserting the coil wire in through the water pump housing to the opti. I found that you can aim the wire and start it from the front of alternator then go from behind to seat it on the opti.
I went with Taylor Spiro Pro 8mm existing wire trees and NGK TR55ix. Throttle response is very good with this combo.
If you need images I probably can make some for you.
Last edited by 93JetJocky; Mar 14, 2005 at 11:20 PM.
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
Originally Posted by Admiral94
When I replaced my factory plugs at 23k miles, half of them were already missing the platinum pucks. I also went with the Iridium plugs, but I really didn't feel any difference.
