TR6 Plug Issue
- Thread starter Evan5469
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IDK man, I'd keep an eye on those plugs. It may feel great but detonation could occur by running a stock heat range plug and that wide of a gap especially when adding 5-6psi of boost over stock. You really should try the NGK tr6ix or the autolite 103's. But then again I'm not a svt mechanic.
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there is a 2 heat range cooler motorcraft platinum plug available. I would maybe use those instead of the stockers. I still say gap is the key no matter what plug you run. Too hot a plug in a forced induction, high compression or alchohol car and you will melt the tip. These cars were force inducted from the factory gapped at .052-.056. thats a hell of a gap but with the right spark curve they obviously thought it was safe. Safe enough they abandoned the knock sensor system they were having problems with. I run the autolight 103's with no idle problems or major driveability concerns, but I also gapped them at .035. I am considering the motorcraft platinum now just because the autolights dont seem to be staying clean, (I pull shit apart and keep an eye on things regularly) that tells me they are a little too cold. You want tr6's without a rough idle, try gapping them a little wider than .032...
Well i know the plugs im using are a single platnum plug. I dont know guys but my prob with the misfire and shitty idle started when i changed to the tr6 plugs. Took her out today runs like a whole new car. All im saying here is what my cars doing. Best of luck to every one facing this prob.
After reading this thread i decided to change my plugs. I had the TR6's in there when I bought it. I checked the plugs when I got the car and decided I would be changing them soon, they were pretty much done. So the other day I decided to change the plugs and try out the TR6IX's. All I can say is WOW! The car feels like a totally different car. Now, I cant say if it was because the Tr6s were not good, or just old. I didnt have any problems with the TR6's, but now she pulls like a freight train. Car idles perfect and feels great too. Just want to clarify, I dont know if it feels better just because they are new plugs or what, just figured I would post my experience.
The TR7 is the plug model that is a heat range colder than the TR6. The IX is the designation for Iridium.
I have a new set or TR6 plugs gapped at .030 in my turbo cobra and i have a slight hesitation at 1500-2000rpm .. i wonder if this could be my prob .
I thought iridium plugs were not that good for boosted cars? or is this a misconception?
I thought iridium plugs were not that good for boosted cars? or is this a misconception?
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lol I should have a dollar for every person who posted in this thread with the same kinda question
Why does no-one try a wider gap with the TR6's? Is the risk of spark blow out that bad? AFAIK there's no repercussion aside from a loss of power and you can always go back to a tighter gap if it happens.
Im going to say it i tried swapping to the NGK TR6 ix plugs gapped at .030 and it solved 90% of my hesitation on my 99 turbo cobra . It still hesitates while cold or after i shut the car off for 15 min or more at 1700-2100rpm but after it sits idleing for 5-10min the car has no more hesitation .
My TR6 copper plugs gapped at .030 were new ... THe Iridium plugs worked
Its worth swapping plugs .. just do it ..
My TR6 copper plugs gapped at .030 were new ... THe Iridium plugs worked
Its worth swapping plugs .. just do it ..
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Tr6ix are in and I gaped them at .040 to start with. My stock plugs are have a gap of .045 so with higher psi of 10.6 I feel this is a good place to start. I did try to regal the tr6 plugs that my tuner put in the car. He had them at .032 so I went up to .040 with some small improvement then I open them up to .045 that was worse than the .032. So I put the stock plugs back in and it was a big change back to the way it ran before the pulley change and tr6 plugs. So now I am going try the tr6ix plug hoping for performance of the standard tr6 and driving quality of the stockers . Wish me luck
wow .35 huh? Thats a pretty big gap.. didnt know they could go that big.
What plugs should i use for my 2.8 kb with 22lbs of boost and meth injection.. I have TR6 but im having what feels like it bogs down at 5k rpms and from a stop feels like its running super rich then takes off like a rocket
gapped at .26
gapped at .26
double
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For the iridium plugs I gently tapped the end on side of my tool chest to get the gap I wanted.
I know im bringing back a thread from the dead, but I have a question regarding an issue that has arose with my car after doing a pulley swap with big help from two other members on here. We put on a 2.76 pulley, snub idler and bracketr6, swapped the belt and plugs, and loaded the tune from Bob Kurgan. The plugs I am running are tr6's gapped at .028. The problem I am having is the car has a miss at around 5500 rpm under WOT. It almost feels like traction control kicks in but it is off. The car runs great other than that and very strong. It even idles just fine. Kurgan suggested I recheck the gaps and maybe close the gap some, but aren't I already running a small gap? Should I try switching plugs to say a br7ef or tr6ix? Or do you think this is a fuel/tune issue?
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