plug gap tr6
#1
10-12-2013, 12:49 PM
Join Date: Jun 2010
Location: texas
Posts: 60
Likes: 0
Received 0 Likes
on
0 Posts
plug gap tr6
Hey guys, I'm running a stock HD supercharger setup on my king ranch 5.4L running only 6-7lbs of boost....went to get it tuned again the other day, and they asked me what my plug gap is so i told them i had them somewhere between .040 and .044----they looked at me like I was crazy and said it needed to be .025-.028 on a NGK tr6. I feel like that's way to small for only running 6-7lbs........what should they be at?
#3
10-12-2013, 04:07 PM
Join Date: Jun 2010
Location: texas
Posts: 60
Likes: 0
Received 0 Likes
on
0 Posts
#4
10-12-2013, 05:05 PM
Member
Join Date: Oct 2006
Location: North Carolina
Posts: 97
Likes: 0
Received 0 Likes
on
0 Posts
#5
10-12-2013, 10:07 PM
Senior Member
Join Date: Jun 2005
Location: Ruckersville VA
Posts: 608
Likes: 0
Received 0 Likes
on
0 Posts
OK, I am wrong. I've never done this before. Put whatever plugs Autozone told you to install. I never said you were installing a truck plug, or even a 5.4L plug in these engines. In fact, make sure you call Troyer to ensure you get Iridium or Platinum while you are at it. He will support this, and even manage to sell you 16 for a V-8.
The AGSF 32C is actually a TEMPO plug. We speak blowers here.
The AGSF 32C is actually a TEMPO plug. We speak blowers here.
#6
10-12-2013, 10:28 PM
Member
Join Date: Oct 2006
Location: North Carolina
Posts: 97
Likes: 0
Received 0 Likes
on
0 Posts
#7
10-13-2013, 01:29 PM
Join Date: Jun 2010
Location: texas
Posts: 60
Likes: 0
Received 0 Likes
on
0 Posts
Trending Topics
#8
10-13-2013, 02:08 PM
#9
10-13-2013, 02:21 PM
Member
Join Date: Oct 2006
Location: North Carolina
Posts: 97
Likes: 0
Received 0 Likes
on
0 Posts
#12
10-14-2013, 10:34 AM
Thank you 88. That confirms what I believed to be true. That means I do have the correct plug for the boost level I am running. I do not, however, suggest running Iridium. Just my experience. Page 1 of the ProCharger manual specifies a low gap and Copper plugs. And you all know how I feel about ProCharger.
The AWSFA-12C would be the ticket for high boost applications. But notice it is not listed for stock boost levels. And it should be an 8 thread application. Times have changed a bit. I guess all the warranty claims on the Lightning has prompted them to make changes, but I cannot verify when they installed a 12. It is DEFINITELY possible they installed them from the beginning! To add to this, a simple heat range change DOES drop combustion temps, so this really is important stuff.
As I said, I never looked back because we have had no problems with the TR-6. But I do have the TR-5s installed at .035", and that fits your chart at 10-12 PSI. Of course I am sure that boost level will change as I progress.
The Copper Motorcraft plug with 8 threads will be an AGSF 32C. The 12FM1 is Iridium.
I looked but had yet to find the chart that suited me... I have seen it before but the 12 eluded me. Thank you!
The AWSFA-12C would be the ticket for high boost applications. But notice it is not listed for stock boost levels. And it should be an 8 thread application. Times have changed a bit. I guess all the warranty claims on the Lightning has prompted them to make changes, but I cannot verify when they installed a 12. It is DEFINITELY possible they installed them from the beginning! To add to this, a simple heat range change DOES drop combustion temps, so this really is important stuff.
As I said, I never looked back because we have had no problems with the TR-6. But I do have the TR-5s installed at .035", and that fits your chart at 10-12 PSI. Of course I am sure that boost level will change as I progress.
The Copper Motorcraft plug with 8 threads will be an AGSF 32C. The 12FM1 is Iridium.
I looked but had yet to find the chart that suited me... I have seen it before but the 12 eluded me. Thank you!
4/8 thread heads are the same and the 4's were still being installed up to the 2003 lightning models....
I've seen some stock 2002+2003 lightnings with a 4 on one side and a 8 on the other....so there's no real difference between the two...
#15
10-14-2013, 05:41 PM
Senior Member
OK, I am wrong. I've never done this before. Put whatever plugs Autozone told you to install. I never said you were installing a truck plug, or even a 5.4L plug in these engines. In fact, make sure you call Troyer to ensure you get Iridium or Platinum while you are at it. He will support this, and even manage to sell you 16 for a V-8.
The AGSF 32C is actually a TEMPO plug. We speak blowers here.
The AGSF 32C is actually a TEMPO plug. We speak blowers here.
Isnt it time you put this issue with MT to bed?