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Old 07-22-2013, 12:55 PM   #43
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Are some of you changing your plugs out at the track to a colder one to use with the blower and Nitrous and running a hotter one on the street to keep from fouling?
I keep the ZR1 plug in all the time. Track or street (17k miles). Ill pull 1 or 2 after a day at the track to let Ted look at them but that's it. We swap them out at the start of every year.
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Old 07-22-2013, 12:57 PM   #44
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Are some of you changing your plugs out at the track to a colder one to use with the blower and Nitrous and running a hotter one on the street to keep from fouling?
That would be ideal,of coarse with the denzos we dont have much of an issue. I came across Denzos when we were racing for the ODBA championship,which is outboard two stroke. We would have to change out the NGKs everytime the boat hit the water,they would foul out.We switched to Denzos and ran the whole year on the same set! Also picked up a boat length out of the whole which is huge.,General rule is for every 75-100hp you should go one set colder,this is for WOT,if you drive that plug back and forth to work it may foul out. A spark plug takes HEAT out of the combustion chamber,higher hp =higher heat so you need the colder plug.
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Old 07-22-2013, 12:59 PM   #45
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I keep the ZR1 plug in all the time. Track or street (17k miles). Ill pull 1 or 2 after a day at the track to let Ted look at them but that's it. We swap them out at the start of every year.
What size shot are you hitting it with... i assuming 100 or 150 maybe less?
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Old 07-22-2013, 12:59 PM   #46
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What size shot are you hitting it with... i assuming 100 or 150 maybe less?
In between those. Nothing huge. Prob close to a 125.
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Old 07-22-2013, 01:03 PM   #47
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Right now i run TR6's on the street and switch out to TR7s at the track with a 150 Shot and 104 octane. It would be so nice to not have to do that since i really dont use the juice that much. I bracket race so no need for the juice in my opinion since my car is pretty consistent without it. However my car attracts a lot of attention where im from and its nice to hit it with the juice and race gas once in awhile without having to change plugs to give a show. I go back to 93 octane once i leave the track and have to switch the plugs back out. Its becoming a pain and ive done it several times
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Old 07-22-2013, 01:09 PM   #48
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Are some of you changing your plugs out at the track to a colder one to use with the blower and Nitrous and running a hotter one on the street to keep from fouling?
I'm running mine all the time but I'm currently running Brisk 12's which is the same as an NGK 8 heat range. 12 psi and a 125 shot. I'm 99.9% light throttle cruise and they aren't staying clean and are starting to foul I think.

Think I'm going to try the Denso IT22's.
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Old 07-22-2013, 01:12 PM   #49
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Right now i run TR6's on the street and switch out to TR7s at the track with a 150 Shot and 104 octane. It would be so nice to not have to do that since i really dont use the juice that much. I bracket race so no need for the juice in my opinion since my car is pretty consistent without it. However my car attracts a lot of attention where im from and its nice to hit it with the juice and race gas once in awhile without having to change plugs to give a show. I go back to 93 octane once i leave the track and have to switch the plugs back out. Its becoming a pain and ive done it several times
If you are not boosted, just the spray, look at the Denso IT20's. same heat range as the ZL1 plugs, still iridium, but non projected tip for nitrous.
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Old 07-22-2013, 02:10 PM   #50
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What is the number of the ZR1 plug? In other works what do I ask for at the Auto Parts Store?
They are AC Delcos, 41-104 is the number I think.
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Old 07-22-2013, 02:29 PM   #51
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I run the NGK TR6 I have not noticed any issues yet with them my tunner told me to run them so I did I am 90 percent sure he is also running an ngk not sure how cold and he is near 1100hp I was suprised when he said not to waste my money on the ZL1 plugs. I dont have an opinon as I have not run the ZL1 plugs but I am pretty happy with the NGK thus far.
You need to put stock plugs back on your car and do a back to back comparison you will be amazed at what your missing with your FORD Plugs.

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I know JRE has pushed the ZR1 plugs past 800 before, and he highly recommends them as well. I thought the delayed starting was because of my injectors, turns out the plugs weren't getting the job done. Drove the car 60 miles yesterday and didn't have a so for stutter, cough, and it didn't search for idle either.
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Old 07-22-2013, 02:39 PM   #52
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If you are not boosted, just the spray, look at the Denso IT20's. same heat range as the ZL1 plugs, still iridium, but non projected tip for nitrous.
I run 12psi and 150 shot
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Old 07-22-2013, 03:04 PM   #53
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Old 07-22-2013, 03:11 PM   #54
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I run 12psi and 150 shot
I just can't wrap my head around the idea of running a projected tip plug like the ZL1 for that. Especially on pump gas no meth. N/A or with some boost and some big power, maybe. Teds tuning is top notch but I could never suggest projected tip plugs with nitrous.

What is your build?
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Old 07-22-2013, 03:16 PM   #55
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I just can't wrap my head around the idea of running a projected tip plug like the ZL1 for that.

What is your build?
Forged bottom LS3, LS7 Ported heads, TB, SC. 10/14 pulley with 2.75, 150 shot, 12psi maggie, 4L85, 3600 yank , many more....
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Old 07-22-2013, 03:32 PM   #56
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Originally Posted by dan0617 View Post
I just can't wrap my head around the idea of running a projected tip plug like the ZL1 for that. Especially on pump gas no meth. N/A or with some boost and some big power, maybe. Teds tuning is top notch but I could never suggest projected tip plugs with nitrous.

What is your build?
The Biggest Misconception about plugs is that they control combustion temps.

They DON'T.

The Tune Up Controls Combustion Temps, if the plug gets hot enough to melt a colder plug will not fix that..

The Heat Range of a Plug has soley to do with keeping it self clean, it has been found the optimum combustion chamber temperature for gasoline engines is between 500°C–850°C. Within that range it is cool enough to avoid pre-ignition and plug tip overheating (which can cause engine damage), while still hot enough to burn off combustion deposits that cause fouling.

Bonneville salt flats means Cold Plug

Driving around the City means Hot Plugs.

The Plugs that come in the ZL-1 are meant for Both.

Ted.
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