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Smokin' Performance | Forum | Mustang Garage | Mechanical | Tech Questions | Ignition | Electronics | Mustang Spark Plugs / Nitrous Plugs 0 Members and 2 Guests are viewing this topic. « previous next »
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Author Topic: Mustang Spark Plugs / Nitrous Plugs  (Read 534 times)
Mauricio
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« on: March 02, 2009, 11:51:27 PM »
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4.6 Mustang GT
Thread – 14mm
Reach - .708”
Socket – 5/8 hex
Seat - Taper
Stock Heat Range: 5
Gap: .054
Plug: NGK TR55 (stock number 3951); NGK TR55IX (stock number 7164); Motorcraft AWSF-32C (copper); Autolite 764; Denso IT-16 (stock number 5325)

Nitrous (one step colder)
Heat Range: 6
Gap: .035 - .038
Plug: NGK TR6 (stock number 4177); NGK TR6IX (stock number 3689); Motorcraft AWSF-22C (copper); Autolite 103; Denso IT-20 (stock number 5326)

Nitrous (two steps colder)
Heat Range: 7
Gap: Consult
Plug: NGK BR7EF (stock number 3346); NGK TR7IX (stock number 3690); Motorcraft AWSFA-12C (copper); Autolite AR94; Denso IT-22 (stock number 5327)

Nitrous (two and a half steps colder)
Heat Range: 8
Gap: Consult
Plug: NGK R5724-8 (stock number 7317); NGK TR8IX (part number 3691); Denso IT-24 (stock number 5328)

Nitrous (three steps colder)
Heat Range: 9
Gap: Consult
Plug: NGK R5724-9 (stock number 7891); Autolite AR93; Denso IT-27

Nitrous (four steps colder)
Heat Range: 10
Gap: Consult
Plug: NGK R5724-10 (stock number 7993); Autolite AR92

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4.6 Mustang Cobra (96-01)
Thread – 14mm
Reach - .708”
Socket – 5/8 hex
Seat - Taper
Stock Heat Range: 5
Gap: .054
Plug: NGK TR55 (stock number 3951); NGK TR55IX (stock number 7164); Autolite 764; Denso IT-16 (stock number 5325)

Nitrous (one step colder)
Heat Range: 6
Gap: .035 - .038
Plug: NGK TR6 (stock number 4177); NGK TR6IX (stock number 3689); Motorcraft AWSF-22C (copper); Autolite 103; Denso IT-20 (stock number 5326)

Nitrous (two steps colder)
Heat Range: 7
Gap: Consult
Plug: NGK BR7EF (stock number 3346); NGK TR7IX (stock number 3690); Motorcraft AWSFA-12C (copper); Autolite AR94; Denso IT22 (stock number 5327)

Nitrous (two and a half steps colder)
Heat Range: 8
Gap: Consult
Plug: NGK R5724-8 (stock number 7317); NGK TR8IX (part number 3691); Denso IT-24 (stock number 5328)

Nitrous (three steps colder)
Heat Range: 9
Gap: Consult
Plug: NGK R5724-9 (stock number 7891); Autolite AR93; Denso IT-27

Nitrous (four steps colder)
Heat Range: 10
Gap: Consult
Plug: NGK R5724-10 (stock number 7993); Autolite AR92

-------------------------------------------------------------------------------------------------------------------------------

4.6 Mustang Cobra (03-04)
Thread – 14mm
Reach - .708”
Socket – 5/8 hex
Seat - Taper
Stock Heat Range: 6
Gap: .049 - .052 (have had better results with tighter gap)
Plug: NGK TR6 (stock number 4177); NGK TR6IX (stock number 3689); Motorcraft AWSF-22C (copper); Autolite 103; Denso IT-20 (stock number 5326)

Nitrous (one step colder)
Heat Range: 7
Gap: .035 - .038
Plug: NGK BR7EF (stock number 3346); NGK TR7IX (stock number 3690); Motorcraft AWSFA-12C (copper); Autolite AR94; Denso IT-22 (stock number 5327)

Nitrous (two steps colder)
Heat Range: 8
Gap: Consult
Plug: NGK R5724-8 (stock number 7317); NGK TR8IX (stock number 3691); Denso IT-24 (stock number 5328)

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5.0 Mustang 87-95
Thread – 14mm
Reach - .460”
Socket – 5/8 hex
Seat – Taper
Stock Heat Range: 4
Gap: .054
Plug: NGK UR45 (stock number 6945); NGK UR45IX (stock number 3207)

Nitrous (one step colder)
Heat Range: 5
Gap: .035 - .038
Plug: NGK UR5 (stock number 2771); NGK UR5IX (stock number 7177)

Nitrous (two steps colder)
Heat Range: 6
Gap: Consult
Plug: NGK UR6 (stock number 7773); NGK UR6IX (stock number 7348)

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5.0 Mustang Cobra 93-95 w/ GT-40 Heads
Thread – 14mm
Reach - .708”
Socket – 5/8 hex
Seat - Taper
Stock Heat Range: 5
Gap: .054
Plug: NGK TR55 (stock number 3951); NGK TR55IX (stock number 7164); Autolite 764 or 104; Denso IT-16 (stock number 5325)

Nitrous (one step colder)
Heat Range: 6
Gap: .035 - .038
Plug: NGK TR6 (stock number 4177); NGK TR6IX (stock number 3689); Motorcraft AWSF-22C (copper); Autolite 103; Denso IT-20 (stock number 5326)

Nitrous (two steps colder)
Heat Range: 7
Gap: Consult
Plug: NGK BR7EF (stock number 3346); NGK TR7IX (stock number 3690); Motorcraft AWSFA-12C (copper); Autolite AR94; Denso IT-22 (stock number 5327)

Nitrous (three steps colder)
Heat Range: 8
Gap: Consult
Plug: NGK R5724-8 (stock number 7317); NGK TR8IX (stock number 3691); Denso IT-24 (stock number 5328)

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Ford F-150 Lightning (99-04)
Thread – 14mm
Reach - .708”
Socket – 5/8 hex
Seat - Taper
Stock Heat Range: 6
Gap: .049 - .052
Plug: NGK TR6 (stock number 4177); NGK TR6IX (stock number 3689); Motorcraft AWSF-22C (copper); Autolite 103; Denso IT-20 (stock number 5326)

Nitrous (one step colder)
Heat Range: 7
Gap: .035 - .038
Plug: NGK BR7EF (stock number 3346); NGK TR7IX (stock number 3690); Motorcraft AWSFA-12C (copper); Autolite AR94; Denso IT-22 (stock number 5327)

Nitrous (two steps colder)
Heat Range: 8
Gap: .033 - .036
Plug: NGK R5724-8 (stock number 7317); NGK TR8IX (stock number 3691); Denso IT-24 (stock number 5328)

Nitrous (three steps colder)
Heat Range: 9
Gap: Consult
Plug: NGK R5724-9 (stock number 7891); Autolite AR93; Denso IT-27 (stock number 5329)

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ralvarez
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« Reply #1 on: March 03, 2009, 11:45:10 AM »
 i dont know help
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Mauricio
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« Reply #2 on: March 03, 2009, 01:35:30 PM »
Okay Im gonna make it easy.
When you run a power adder you produce more heat in your engine
Spark plugs get super hot becoming like Glow plugs (diesel)
Hot plugs cause pre detonation prior to the actual spark

Thats why depending on power levels you want to get a colder plug
I recommend for every 50hp over stock to get 1 step colder plug 
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SHOCKER!
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« Reply #3 on: March 03, 2009, 05:25:42 PM »
Glow plugs are awesome.
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James
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« Reply #4 on: February 22, 2010, 12:44:16 PM »
What plugs y'all recommend for what I got and gap?

3.8 v6 with bbk 65mm tb cold air intake, true duals with no cats.

And I think I'm startin to get a heatin problem but idk what it could be, I took out the stock 215 thermostat and put in a 180 when I first put it in it ran colder which was great about 1/4 on the guage vs 1/2 like it was with the stock, now it's takin alot less time to go to 1/2 almost normal now unless I baby it it'll stay at 1/4
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SonicBlue4v
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4 Cams?


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« Reply #5 on: February 22, 2010, 04:09:28 PM »
autolite or motorcraft
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James
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« Reply #6 on: February 22, 2010, 05:35:26 PM »
Idc for motetcragt, Bosch?
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4.slow!
5.extra slow
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« Reply #7 on: February 22, 2010, 05:50:36 PM »
If temp goes to 1/2 way mark it is still normal
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eric 2v gt
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« Reply #8 on: February 23, 2010, 09:03:18 PM »
glow plugs on diesel are only to warm the chambers up on start up they have no corralation with spark plugs fyi
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2000 2v gt blown,cooled,cammed
and still only a MUSTANG
James
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« Reply #9 on: February 23, 2010, 09:08:49 PM »
I know about glow plugs, my work/play truck was a 4x4 f350 7.3 twin turbo diesel with a flatbed, 4inch dual stacks that had  right at 1000tq and 935hp.......I loved datin for money when I lived in ms lol
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eric 2v gt
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« Reply #10 on: February 23, 2010, 09:12:11 PM »
how did u go from that to a sixer
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2000 2v gt blown,cooled,cammed
and still only a MUSTANG
James
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« Reply #11 on: February 24, 2010, 09:26:04 AM »
Well let's see, gas went up and it takes alot to gill a 35 gallon main tank and a 20 gallon tank I installed on the bed, and 6 speed manual and my heavy foot, it cost damn near 160 to fill up lol and when I stopped managing a hunting camp and stopped datin a billionaire daughter I lost my supply od diesel lol I would my tank up with the diesel tanker but shhhhhh don't tell lol
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