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Do you know what they should be gapped to for my 2015 ZO6? Thanks
Haven't gapped a plug for a while. I don't think they are to set anymore. Iridium plugs come at the proper gap. The right plug comes at the right gap. Last plug I gapped was a copper plug. That was 5 or 6 changes ago and years ago I keep 5 cars. They come pre-gapped you buy the right one. Also cold plugs may or may not not be good
Last edited by SpeedyVette; Dec 3, 2019 at 08:36 AM.
I put 20000 on my brisk 14R plugs. They didn’t need to be changed. Plugs looked great right color no deposits. 7&8 weren’t lean that’s because I run a maggy2300
Haven't gapped a plug for a while. I don't think they are to set anymore. Iridium plugs come at the proper gap. The right plug comes at the right gap. Last plug I gapped was a copper plug. That was 5 or 6 changes ago and years ago I keep 5 cars. They come pre-gapped you buy the right one. Also cold plugs may or may not not be good
his car is modified which necessitates a different gap than stock.
plugs don't come gapped, they just tell you that so you don't mess up the "exotic" materials. there is a lot of variance if you check them before installing.
I run RR10S gapped at .020, for the OP I would run RR14S gapped at .025
Denso ITV22 is what I use, make 785/865 and have gone as fast as 9.23@148. That’s a 7 heat range, .030 gap so you just put them in. ITV24 is 8 heat range. Great plug, no issues and I daily the car.
his car is modified which necessitates a different gap than stock.
plugs don't come gapped, they just tell you that so you don't mess up the "exotic" materials. there is a lot of variance if you check them before installing.
I run RR10S gapped at .020, for the OP I would run RR14S gapped at .025
Sorry but you should check again plugs certainly do come gapped and the part number determines the gap.
This fact is not debatable you can say it is not that way all day long but it is!
Last edited by SpeedyVette; Dec 4, 2019 at 12:03 PM.
Denso ITV22 is what I use, make 785/865 and have gone as fast as 9.23@148. That’s a 7 heat range, .030 gap so you just put them in. ITV24 is 8 heat range. Great plug, no issues and I daily the car.
Yes exactly they come gapped they also say you do not re gap a iridium plug.
Sorry but you should check again plugs certainly do come gapped and the part number determines the gap.
This fact is not debatable you can say it is not that way all day long but it is!
Originally Posted by SpeedyVette
Yes exactly they come gapped they also say you do not re gap a iridium plug.
I understand what you are saying. "Plugs come gapped." And they do come gapped. But that doesn't meant they come gapped RIGHT. And that is what I am saying.
What I am saying is you should check the gaps before assuming they are gapped as advertised. What I am also saying is they are gapped for a specific application, in this case STOCK vehicle.
OP has modifications, in which case, there is no part number to order, you have to check and adjust the gap yourself.
I decided to try the brisk plugs as well since I’m now running E85 and 14.5 psi on my z06. Here is a comparison of 300 miles on brisk vs a whole year on pump gas with NGK’s. I pulled them the other day to check on them because I started to notice some random loss of throttle response.
