Ruthenium Spark Plugs for boost?? 
Ruthenium Spark Plugs for boost??
What do they cost?
Can you order by heat range?
Guys here will get real wiggly about extended tip in a FI application. Although all the factory FI cars like the Hellcats, supercharged corvettes come with them.
Can you order by heat range?
Guys here will get real wiggly about extended tip in a FI application. Although all the factory FI cars like the Hellcats, supercharged corvettes come with them.
Gaps open? As in the electrode wears away At 6k miles? That’s def. not normal behavior. Typically, they should last 10-20k. For a performance app. You should have the plugs out often enough that none of that matters IMO. But for a daily, I guess I could see iridium. Still expensive per plug compared to the copper though.
I was thinking more along the lines of power. As in you aren’t going to gain anything with a magic spark plug.
I was thinking more along the lines of power. As in you aren’t going to gain anything with a magic spark plug.
I got that part. But you didn’t say how are the gaps opening up? Are you saying the electrode is wearing away by 6k to the point it won’t fire anymore? If so, that’s not normal behavior.
Are you saying the ground strap is opening somehow? Guess I don’t understand why gaps would change much at 6k.
Are you saying the ground strap is opening somehow? Guess I don’t understand why gaps would change much at 6k.
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I had heard of those plugs a while back but still haven't tried them yet. Most of the mild/medium boost combos we do get iridiums because they do really idle cleaner and drive better than non-projected tip plugs but I would be interested in giving these a whirl. All of the higher boost combos get resisted/non-projected plugs since we aren't as concerned about driveability, but man some of those colder plugs sure are hard to light off on cold starts at super high ethanol contents.
Why not just email support at NGK and have them recommend a plug for you? That's what I did. D1SC Procharger at 12(ish) lbs of boost on a higher than stock compression engine with HCI.. They responded very quickly and this is the email I got. Excellent service from their service dept.
Your compression and boost put you in an 8 heat range, TR8IX (3691) is for street use, if it is track use only, please use R5724-8 (7317) and adjust it to .032”. Mark Kent Technical Service Representative – Aftermarket Division NGK Spark Plugs (U.S.A.), Inc.(877) 473-6767 option 2MEKent@ngksparkplugs.com
Your compression and boost put you in an 8 heat range, TR8IX (3691) is for street use, if it is track use only, please use R5724-8 (7317) and adjust it to .032”. Mark Kent Technical Service Representative – Aftermarket Division NGK Spark Plugs (U.S.A.), Inc.(877) 473-6767 option 2MEKent@ngksparkplugs.com
I’ve run the R5724-8 since day one in my Nova. 9 years.
These are semi projected tip (about half of a TR6) and non resistor.
I’ve had no issues at 24 psi on E85.
I did try the BR7EF once. They didn’t idle nice, and the idle AFR changed. I drove it around my 5 mile test loop and took ‘em out.
These are semi projected tip (about half of a TR6) and non resistor.
I’ve had no issues at 24 psi on E85.
I did try the BR7EF once. They didn’t idle nice, and the idle AFR changed. I drove it around my 5 mile test loop and took ‘em out.
I’ve run the R5724-8 since day one in my Nova. 9 years.
These are semi projected tip (about half of a TR6) and non resistor.
I’ve had no issues at 24 psi on E85.
I did try the BR7EF once. They didn’t idle nice, and the idle AFR changed. I drove it around my 5 mile test loop and took ‘em out.
These are semi projected tip (about half of a TR6) and non resistor.
I’ve had no issues at 24 psi on E85.
I did try the BR7EF once. They didn’t idle nice, and the idle AFR changed. I drove it around my 5 mile test loop and took ‘em out.
The BR7EF with it's non-projected tip has a tendency to not idle as cleanly or drive as smoothly as a projected tip plug. Sometimes noticeable, sometimes not. I don't think I've ever had to retune something though just by switching to a non-projected plug from a projected one.
The BR7EF with it's non-projected tip has a tendency to not idle as cleanly or drive as smoothly as a projected tip plug. Sometimes noticeable, sometimes not. I don't think I've ever had to retune something though just by switching to a non-projected plug from a projected one.
The BR7EF with it's non-projected tip has a tendency to not idle as cleanly or drive as smoothly as a projected tip plug. Sometimes noticeable, sometimes not. I don't think I've ever had to retune something though just by switching to a non-projected plug from a projected one.
I didn’t say it ran so crappy I took them out. I just didn’t want to retune the thing.