Copper Spark Plug for IX?
#5
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Couple lower cost options for you:
http://www.maperformance.com/denso-i...l#.USp_x1dUqrA
http://www.maperformance.com/ngk-las...l#.USp_y1dUqrA
http://www.maperformance.com/denso-i...l#.USp_x1dUqrA
http://www.maperformance.com/ngk-las...l#.USp_y1dUqrA
#6
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Careful Chris, under no circumstances should this plug be considered for a IX running E85:
http://www.maperformance.com/denso-i...l#.USp_x1dUqrA
E85 burns cooler than gasoline as-is, and cooler plugs just tend to foul and misfire, while delivering no benefit in return. I strongly recommend using factory heat range plugs in E85 applications.
This plug would be the correct alternative in the proper heat range:
http://www.maperformance.com/ngk-las...l#.USp_y1dUqrA[/QUOTE]
But ...
I agree, and will likewise point out that one is fooling himself in thinking using a conventional plug will save money. In my experience, the iridium plugs last 2-3X longer, which negates short term cost savings. Additionally, the iridium plugs require less energy to fire, which is a benefit.
There are ways to save money and ways not. This way is mostly a dead end, over a few peanuts.
#7
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https://www.evolutionm.net/forums/10361140-post288.html
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#8
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Careful Chris, under no circumstances should this plug be considered for a IX running E85:
http://www.maperformance.com/denso-i...l#.USp_x1dUqrA
E85 burns cooler than gasoline as-is, and cooler plugs just tend to foul and misfire, while delivering no benefit in return. I strongly recommend using factory heat range plugs in E85 applications.
http://www.maperformance.com/denso-i...l#.USp_x1dUqrA
E85 burns cooler than gasoline as-is, and cooler plugs just tend to foul and misfire, while delivering no benefit in return. I strongly recommend using factory heat range plugs in E85 applications.
#9
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Reporting your own observation isn't being argumentative at all. That this plug has an iridium center electrode probably makes it more forgiving than the copper equivalent, but I view the notion of going a step colder (much less two) as suspect for just about any street driven application where E85 is used, and I'll tell you why ...
I've used and advocated one-step cooler copper plugs for performance use since I began fiddling with the car some 8.5 years ago, and swapped over to E85 about 3 or so years ago. During that time, I've swapped others to E85 and tuned them. In one car that had a full-time EGT gauge, I witnessed a reduction in EGT of 100+C at closed loop operation just by switching from 93 octane gasoline to E85 with no other changes. That represents a substantial decrease in combustion temperatures.
After pondering this realization and how it would affect plug electrode temperatures, I swapped plugs back to the factory heat range, and immediately observed an improvement in off-idle torque and response. Over time, I also realized the plugs lasted much longer (still haven't needed changing), seemed to get better fuel economy, and I've experienced no detriment in performance or observable change in knock characteristics (using 40psi boost).
Based upon my observations, I've seen no advantages, and only disadvantages in running cooler plugs with E85. YMMV, and things may be different for 800-900 drag applications, but I feel quite confident in making recommendations based upon my findings for just about any competently tuned, street driven E85 application.
Just my $0.02.
I've used and advocated one-step cooler copper plugs for performance use since I began fiddling with the car some 8.5 years ago, and swapped over to E85 about 3 or so years ago. During that time, I've swapped others to E85 and tuned them. In one car that had a full-time EGT gauge, I witnessed a reduction in EGT of 100+C at closed loop operation just by switching from 93 octane gasoline to E85 with no other changes. That represents a substantial decrease in combustion temperatures.
After pondering this realization and how it would affect plug electrode temperatures, I swapped plugs back to the factory heat range, and immediately observed an improvement in off-idle torque and response. Over time, I also realized the plugs lasted much longer (still haven't needed changing), seemed to get better fuel economy, and I've experienced no detriment in performance or observable change in knock characteristics (using 40psi boost).
Based upon my observations, I've seen no advantages, and only disadvantages in running cooler plugs with E85. YMMV, and things may be different for 800-900 drag applications, but I feel quite confident in making recommendations based upon my findings for just about any competently tuned, street driven E85 application.
Just my $0.02.
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R. Mutt (Mar 5, 2016)
#12
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'A few steps' is a huge jump, and there is no need to go 'a few steps colder'. Even one step colder is plenty for street gasoline.
#13
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Where you are right now, I see no good reason to go colder with any plug, much less a copper plug. You'll need to make several changes to reach the 800+whp level.
'A few steps' is a huge jump, and there is no need to go 'a few steps colder'. Even one step colder is plenty for street gasoline.
'A few steps' is a huge jump, and there is no need to go 'a few steps colder'. Even one step colder is plenty for street gasoline.
#14
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the lfr6a-11 would be a higher heat plug not colder but would it be a good one to use on a high hp e85 car i would be interested in these. i use stock heat range stock ix plugs from the dealership with a stock ignition with hksdli 2 and achieved the numbers in my sig with that set up. i never really had any misfire issues. when the car comes back out for the spring going to get a spoolin up non cdi to go with my hks dli set up, that is going to give me some good spark. a long time ago i used the lfr6a-11 plug on my turbo spec v back in the day every auto part store carry's them and they are cheap. i always had in the back of my mind hey these plugs on my evo look like the ones from my spec v but are iridium.
#15
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Definitely injectors, probably fuel system, cams, etc., which is why it seems unexpected to be talking about the cost of plugs, but that's a different discussion.
I don't know that I'd go hotter using E85 (factory heat range should be ok), but I've observed only drawbacks going colder.
I don't know that I'd go hotter using E85 (factory heat range should be ok), but I've observed only drawbacks going colder.