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Old Jul 31, 2006 | 08:28 PM
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Default NGK tr6 plugs

What does "One heat range colder mean"

Do I need colder plugs on my car? I am about to put nitrous on it

Will I lose HP NA by using colder plugs?

Any/all info here is appreciated trying to get educated.

With heads/cam/full exhaust/150 wet shot of nitrous plugs what gap plugs should I be running on my 2001 SS?
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Old Jul 31, 2006 | 08:30 PM
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I would use the NGK TR6 plug. Works well N/A and is a step colder. Probably 50-55 gap. Honestly I would run them right out of the box after checking the gaps.
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Old Jul 31, 2006 | 09:10 PM
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Originally Posted by orangeapeel
I would use the NGK TR6 plug. Works well N/A and is a step colder. Probably 50-55 gap. Honestly I would run them right out of the box after checking the gaps.
no no no...that is way too wide a gap for N2O

a TR6 should be gapped around 35 for a shot like that...i spray a 150 shot with my TR6's gapped at 35

the plugs do well for daily driving NA too
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Old Jul 31, 2006 | 09:54 PM
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Originally Posted by iamsickofitall
no no no...that is way too wide a gap for N2O

a TR6 should be gapped around 35 for a shot like that...i spray a 150 shot with my TR6's gapped at 35

the plugs do well for daily driving NA too
I was thinking TR5.
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Old Jul 31, 2006 | 10:19 PM
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rather than just tell me what I need I'm trying to understand. Could you please explain why colder plugs are better for nitrous, why certain gappings etc? Sorry to sound like such a newbie but really trying to learn the quantum mechanics of these things.

J/k on the last part but I am trying to gain a substratal understanding.
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Old Jul 31, 2006 | 10:53 PM
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i have my tr6s gapped at .45, no nitrous though
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Old Jul 31, 2006 | 11:02 PM
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Try to find a plug with a short ground electrode. This is generally thought to be more important than a colder heat range. Because temperature will increase so severely and quickly when using nitrous oxide, the temperature at the tip of the plug's ground electrode will become extremely hot very quickly.

Therefore the longer the ground electrode, the longer it will take for the excess heat to be conducted away from the tip to the plug shell and ultimately into the cooling system. An overheated ground electrode tip can cause detonation and may even fail completely.

Detonation is what you are wanting to stay away from essentially.
DO NOT USE A PLATINUM PLUG. The chemical reaction will have an effect on the electrodes and leave deposits and crap all over them impeding spark performance.


How is that for an break down?
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Old Jul 31, 2006 | 11:23 PM
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What happens if detonation occurs? IE: lets say a sparkplug burns out and your running nitrous. You get kabooM?

I would sure hope when I put the nitrous on the car a bad spark plug won't blow up the motor.

And thank you for the explanation.



Also will I lose HP with say the Tr6 plug NA vs. FI?
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Old Jul 31, 2006 | 11:41 PM
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Lol. You are leaving my area of knowledge! A hotter plug should not be used. I would venture to guess that you really won't lose any noticeable power from a tr55 to a tr6. Just different electrode properties and gaps.

And yes detonation isn't necessarily gonna be an all at once *BOOM* but it will most likely cause harmful damage over time. Nitrous will accelerate it too i and almost instantly in some cases.

The increased temperatures from nitrous will be offset with the colder plug. I run a direct port 200-400 shot on the Z28 and have 3 steps colder race plugs for it. But it runs with a tr6 on the street as it sits as a DD and with a mild cam....I feel no loss of power.
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Old Jul 31, 2006 | 11:43 PM
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Originally Posted by Michael Ozorowsky
lets say a sparkplug burns out and your running nitrous. You get kabooM?
You would be running on 7 cylinders then.
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Old Jul 31, 2006 | 11:47 PM
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Here are some pictures of nitrous plugs and their reactions w/ explanations.
http://www.dragstuff.com/techarticle...-pictures.html

You are really gonna want to go into using nitrous with as much knowledge as you can. The people that you hear say that they will spray anything normally have an idea of how much something is going to be able to safely take. But then again there is that
"Joe LS1tech'r" that will bash the hell out of nitrous users because they don't know the first thing about it. Most of those types of people will tell you that you will wash your cylinder walls and break parts. True. You can ruin a rear end with nitrous!
Used in moderation in certain scenarios nitrous can work like a dream!
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Old Aug 1, 2006 | 12:16 AM
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I am thinking of spraying 150 wet shot is a used NX kit, and I'm using a window switch 3000-6000 rpm with a Fuel pressure safety switch and WOT switch. Think those are enough safeties?
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Old Aug 1, 2006 | 12:20 AM
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Window Switch is important, but you would really need one in an M6.
Actually all of those are good to use. Make sure that you have a fuel system to take it on as well. I would probably go to a 30# injector for a 150.
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Old Aug 1, 2006 | 12:23 AM
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Thsi should be in the nitrous forum...but, you are going to be very close or most likely exceeding the power your stock fuel pump can support. Also, the electrode length is what determines the heat range of the plug. The more recessed the electrode the colder the heat range.
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Old Aug 1, 2006 | 02:05 AM
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Originally Posted by cantdrv65
Thsi should be in the nitrous forum.
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Old Aug 1, 2006 | 05:02 PM
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Do I need bigger injectors if I'm going wet? I am spraying wet to compensate for the lack of extra fueling.

Originally Posted by orangeapeel
Window Switch is important, but you would really need one in an M6.
Actually all of those are good to use. Make sure that you have a fuel system to take it on as well. I would probably go to a 30# injector for a 150.
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Old Aug 1, 2006 | 05:14 PM
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No, stock injectors will be fine. I would definatley look into the racetronix PnP pump kit though.
I'm running TR6's gapped @ .035 for a 150 shot and have noticed no difference in NA performance.
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Old Aug 1, 2006 | 06:53 PM
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Originally Posted by calongo_SS
No, stock injectors will be fine. I would definatley look into the racetronix PnP pump kit though.
I'm running TR6's gapped @ .035 for a 150 shot and have noticed no difference in NA performance.

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Old Aug 1, 2006 | 07:51 PM
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I'm a poooooor man though that just loves my car. I was only able to purchase this car through money left to me from my dad dieing of colon cancer or else I wouldn't have this car. He always wanted to help me buy a camaro.

How much does that fuel pump cost?
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Old Aug 1, 2006 | 07:57 PM
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I think the PnP kit w/ harness is 250 or so. You can get a 255 lph pump and put it in using the stock wiring for $115 or so. It'll be a pretty good upgrade over stock still.
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