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  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech

spark plug gap for nitrous?

  • Thread starter Thread starter 98COBRA281
  • Start date Start date Mar 14, 2009

98COBRA281

10 Year Member
Nov 24, 2007
1,348
30
59
Port St. Lucie, Florida
Mar 14, 2009
#1
  • Mar 14, 2009
  • #1
what should i gap the plugs at? i dont plan on spraying it alot, maybe a few times a month, and mostly at the track, and will it make it run crappy with a closer plug gap when not running nitrous?
 

mrvax

Stay thirsty my friends
Founding Member
Nov 29, 1999
5,225
3
79
SN Moderator: Orlando, Fl.
Mar 14, 2009
#2
  • Mar 14, 2009
  • #2
I've heard people running a .035 gap with the 4.6L & nitrous. I also believe they go to a colder plug.

I don't think you'll notice much of a drop off in regular driving.
 

Tim2002GT

Founding Member
Apr 10, 2002
635
4
29
Tulsa, Oklahoma
Mar 14, 2009
#3
  • Mar 14, 2009
  • #3
I would definately use a colder than stock plug if your gonna spray it. I use NGK TR6's gapped at 0.035. Sometimes when the engine is cool there is a little hesitation in the lower rpms, but that might not be related to the plug gap. Once it warms up its not a problem. Other than that, my NA track times have stayed the same with the n2o plugs.
 
G

GettinThere

Member
Jul 29, 2005
553
1
19
Central Texas
Mar 14, 2009
#4
  • Mar 14, 2009
  • #4
One step colder Motorcraft copper plugs gapped at 0.042 here.
 

98COBRA281

10 Year Member
Nov 24, 2007
1,348
30
59
Port St. Lucie, Florida
Mar 14, 2009
#5
  • Mar 14, 2009
  • #5
im already runing autolite 103's copper plugs, which are 1 step colder then stock, and there gapped at .048 due to the compression/heads/cams...
 

blackink00

I missed a shift & stole Curt's money.
Mar 30, 2005
545
0
0
Tempe, AZ
Mar 14, 2009
#6
  • Mar 14, 2009
  • #6
ngk tr6 at .035 gap. never had a single problem
 
B

blksq10psi

Member
Aug 1, 2008
114
0
16
PHILLY
Mar 15, 2009
#7
  • Mar 15, 2009
  • #7
i was running the tr6 when i had a 150 shot on it and gapped a .35 also but i opened the gap up to .42 with hotter cop on it no problems and when you get the juice let me know how spraying it everynow and then goes for you i was going to the speed shop like it was a crack house i love being s/c now !!
 
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