NGK Iridium Detonation?
#1
NGK Iridium Detonation?
So, My NGK BKR8EIX plugs have been running flawlessly for about 50k miles or so... Ive never gone that far on any plugs, i usually change them about once a year just for the hell of it.
Anywho... i pulled them to replace them, and was kindof surprised by what i found.
Just looking at the plugs, would you think this chipping on the insulators is just from High mileage on them, or did i maybe get some lower than optimal fuel somewhere and detonate for a little while? The damage seems minimal... but obviously ANY detonation is bad detonation...
From what ive seen in the past, Usually detonating does more damage than this, and ive even seen little metal ***** splashed all over them from the awesomeness that had occured.
so, normal high mileage wear??? or did i go boom a few times???
What Dost Thou think???
and, dont mind the rust.... i had the hood off my car, and my tarp covering it had some awesome leaks. Seeped right through the plug wire boot
Anywho... i pulled them to replace them, and was kindof surprised by what i found.
Just looking at the plugs, would you think this chipping on the insulators is just from High mileage on them, or did i maybe get some lower than optimal fuel somewhere and detonate for a little while? The damage seems minimal... but obviously ANY detonation is bad detonation...
From what ive seen in the past, Usually detonating does more damage than this, and ive even seen little metal ***** splashed all over them from the awesomeness that had occured.
so, normal high mileage wear??? or did i go boom a few times???
What Dost Thou think???
and, dont mind the rust.... i had the hood off my car, and my tarp covering it had some awesome leaks. Seeped right through the plug wire boot
#4
The current state of the engine is slightly lacking, because ive been focusing on my 1.8build, and doing my MS research... i kinda stopped caring about what i have in there now.... lol
1.6=Fael
#8
They look ok for 50k miles of boosted abuse. They've got a nice solid carbon ring on them indicating a rich mix which is good, and the dark wear mark on the ground strap is right in the middle, which indicates good ignition timing.
I replace my NGK V-power bkr7e plugs yearly because they're $2 a pop and I like to 'read' fresh ones every spring. I run 15psi on stock coils and wires without any issues.
So far
I replace my NGK V-power bkr7e plugs yearly because they're $2 a pop and I like to 'read' fresh ones every spring. I run 15psi on stock coils and wires without any issues.
So far
#9
I was getting gas from a slightly sketchy gas station... because they had 94 octane... but, i started questioning whether it was actually 94 or not... because the price was way too low compared to the sunoco down the street for their 94. AND, my car ran like crap with gas from them. i stopped going there after 3 fillups... but thats about 900 miles of Shitty fuel if thats indeed what the problem was. that COULD be part of the issue, but it was never confirmed, i just stopped going there. lol
#10
They look ok for 50k miles of boosted abuse. They've got a nice solid carbon ring on them indicating a rich mix which is good, and the dark wear mark on the ground strap is right in the middle, which indicates good ignition timing.
I replace my NGK V-power bkr7e plugs yearly because they're $2 a pop and I like to 'read' fresh ones every spring. I run 15psi on stock coils and wires without any issues.
So far
I replace my NGK V-power bkr7e plugs yearly because they're $2 a pop and I like to 'read' fresh ones every spring. I run 15psi on stock coils and wires without any issues.
So far
do they make the plugs you use in a bkr8e??? 8 is the best heat range ive found for my setup. I only went with the iridiums because all my boost buddies out in Missouri swore by them... but at $36 for 4 of them, i wouldnt mind going cheaper. lol
#11
Boost Czar
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why are you running a heat range of 8?
you should be running a heat range of 6 on NGKs, 7 at the most.
BKR6E-11 or BKR7E-11, or bust.
but your plugs indicate that you're running too cold a plug and too much fuel...
you should be running a heat range of 6 on NGKs, 7 at the most.
BKR6E-11 or BKR7E-11, or bust.
but your plugs indicate that you're running too cold a plug and too much fuel...
#13
Boost Czar
iTrader: (62)
Join Date: May 2005
Location: Chantilly, VA
Posts: 79,493
Total Cats: 4,080
1.6L plugs were already too cold from the state. factory 1.8L plugs are heat range 5; you don't really need more than 6-7.
going to 8 obviously is leading to an incomplete burn.
I'd run as hot as I can get away with--in regards to auto-igniting.
going to 8 obviously is leading to an incomplete burn.
I'd run as hot as I can get away with--in regards to auto-igniting.
#14
Most definitely... Ill try hotter and see how it goes. Ill do that, and then depending on the results, cut back on the fuel. Do you have any strong feelings towards which plugs? just basic copper? The NGK-R's? or is there any benefit at all to having the iridiums? I was just playing follow the leader when i went with them some years back
#19
Not a very good sound/feel.
I ALSO dont know how long those plugs were in the car by the time i bought it though.... they could have had 100,000 miles of hard driving on them. I would HOPE not..... seeing as how ive put another 120k trouble free miles on it, i doubt it.
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