Nitrous Spark Plug Question

SliverStang

Member

May 25, 2003

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Pineville, LA

Aug 30, 2005

#1

• Aug 30, 2005

• #1

I know that AR94's are good nitrous plugs. but my local parts store didn't have any so they sold me some NGK T55's are they good nitrous plugs?

 

J

Justin03GT

New Member

Mar 30, 2005

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Mount Pleasant, SC

Aug 30, 2005

#2

• Aug 30, 2005

• #2

i use autolite 103's, range colder copper plugs gapped to .038...work fine for me and are dirt cheap....

 

forpit2000gt

Founding Member

Jun 30, 2002

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Columbia, SC

Aug 30, 2005

#3

• Aug 30, 2005

• #3

SliverStang said:

I know that AR94's are good nitrous plugs. but my local parts store didn't have any so they sold me some NGK T55's are they good nitrous plugs?

Click to expand...

AR94's are Autolite two steps colder, 103's are one step colder
NGK tr55 are stock heat range, tr6 are one step colder, 3P7EFS are two steps colder
I wouldn't run TR55's with nitrous without at least pulling a couple of deg. timing.
At least one step colder plug.

 

Mustang_chic_GT

New Member

Jul 18, 2005

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Jackson, Missouri

Aug 30, 2005

#4

• Aug 30, 2005

• #4

I had nitrous on my old 98 mustang and i used ngk's and they lasted like 2 weeks and i had to replace them so i would say dont use them..

 

Dan_Soprano

15 Year Member

May 7, 2003

7,410

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Jacksonville, FL

Aug 30, 2005

#5

• Aug 30, 2005

• #5

Mustang_chic_GT said:

I had nitrous on my old 98 mustang and i used ngk's and they lasted like 2 weeks and i had to replace them so i would say dont use them..

Click to expand...

you must have been spraying a whole lot!

 

SliverStang

Member

May 25, 2003

270

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Pineville, LA

Aug 30, 2005

#6

• Aug 30, 2005

• #6

thank, i just found me some tr6's to hold me over till i can get some ar94's

 

04gtdrop

New Member

Jun 10, 2005

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Sac, CA

Aug 30, 2005

#7

• Aug 30, 2005

• #7

ok guys, i have a question. when you say they are one or two steps colder than stock what does this mean? the spark is not as hot? why do want/need colder plugs? can some one please explain this to me?


edit: and if price isnt/wasnt an issue what would be the best spark plug to run?
what should they be gapped at? and how long do they last when you are running NOS?

 

B

BriancWS6

New Member

Aug 30, 2005

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Kentucky

Aug 30, 2005

#8

• Aug 30, 2005

• #8

Those NGK TR6s will be fine. They are a good plug, as long as your not running excessively rich they will last a while. I run them in my car gapped at .038. I have a dry kit that I haven't used yet, wanted the plugs in there for when the time comes.

Colder plug is just what it is, the gap is closer for nitrous because of the extra cylinder pressure while the N2O is present. Too hot of a plug and the side electrode can literally melt away. Two big a gap and the spark will get blown out.

As far as the best plug $$$ not an option I would have to say the NGK TR6 Irridium plugs for nitrous. Their basically a longer lasting version of the TR6. Hope this helped you!

 

K

Kilgore Trout

Fried or Broiled ?

10 Year Member

Mar 30, 2005

4,749

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134

Aug 30, 2005

#9

• Aug 30, 2005

• #9

The temperature rating of a spark plug speaks to how well the plug conducts heat away from the cylinder. You see, spark plugs do not just spark, they also act as a conduit for heat to escape from the cylinder. A colder plug conducts more heat, a hotter plug conducts less.

 

Josh-'96 GT

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Jul 28, 2005

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Aug 30, 2005

#10

• Aug 30, 2005

• #10

Another vote here for the NGK TR6. I sprayed a 250 shot on top of my 383 stroker in my '97 WS6 with no problem...

 

forpit2000gt

Founding Member

Jun 30, 2002

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Columbia, SC

Aug 30, 2005

#11

• Aug 30, 2005

• #11

Mustang_chic_GT said:

I had nitrous on my old 98 mustang and i used ngk's and they lasted like 2 weeks and i had to replace them so i would say dont use them..

Click to expand...

You had something wrong with your tune or gap.
NGKs are one of ther best plugs on thee market. Racers I know will only use NGK. Now we are not talking about street cars but we are talking about a whole lot more nitrous than anybody runs on the street. 500+hp on top of the motor hp.
The autolites or motorcraft are fine for most applications. I would just go at least one step colder. And use coppers.

 

S

silver bullit99

New Member

Jul 28, 2004

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Aug 31, 2005

#12

• Aug 31, 2005

• #12

i alos use NGK TR6's with my 125 shot they are a great plug and ihave like 9k miles on them so far and they are just fine.

 

BooWFO

New Member

May 10, 2005

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Louisville, KY

Aug 31, 2005

#13

• Aug 31, 2005

• #13

Running tr6's too but I inched the gap up to .40 from the .35 they come. I got better MPG, NA times, and they are doing just fine. Pull them once a week to check them (after running a bottle out).