Big Power Figures & Spark Plugs

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xenocron
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Post by xenocron »

See below...
Last edited by xenocron on Fri Oct 19, 2007 5:45 pm, edited 1 time in total.
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Post by Gaskleppie »

In Europe the B16a's run with 6's and the Type R's run 7's Sure about that!

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Post by Bugermass »

yea, here if you go to the dealer and ask for plugs for a type R they give you 7s, LS GSR SI you get 6s, single cam you get 5s.
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xenocron
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Post by xenocron »

Did some Research: Type R NGK IX iridium 6988 BKR7EIX-11 .044\" NGK Double Platinum 2380 PFR7G11 .044\" GSR NGK Iridium plug 6741 IFR6E-11 .052\" NGK IX iridium 3764 BKR6EIX-11 .052\" NGK Double Platinum 4115 PFR6G-13 .052\" LS NGK IX iridium 2477 ZFR5FIX-11 .044\" NGK Double Platinum 4363 PZFR5F-11 .044\" B16 NGK Iridium plug 6741 IFR6E-11 .052\" NGK IX iridium 3764 BKR6EIX-11 .052\" NGK Double Platinum 3141 PFR6L-13 .052\" This is for the 2001 Integra or 2000 B16 Si
Last edited by xenocron on Fri Oct 19, 2007 5:45 pm, edited 1 time in total.
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Post by Coupe-r »

yep 7's for an ITR mostly because of the compression and the fact it's going to get thrashed :) ok depending on how much power i make and how hard core I want to be with tuning i'll get a spare set of plugs and read em after a dyno pull.

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Post by xenocron »

Weird...for a Year 2000 Type R the stock plugs are a 6 heat range, but the 2001 Type R the stock plugs are a 7 heat range. WTF?
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Post by Coupe-r »

Ok the USA ITR has lower compression than the JDM one. JDM will be 7, I assume USDM will be 6. Maybe they changed their mind later on to 7. (Or maybe 2001 went to 11:1)

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Post by Bugermass »

Just run 8s and you'll be good.. they won't foul out, and it won't hur tto have a bit colder plug in there.. I'd recommend NGK 4554s
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Post by BRMS »

Ah yes.. the 4554! Excellent choice!
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Post by Gaskleppie »

I am using the 4554's now on a few cars but it seems that those cars has small mis fires at idle. Has anybody noticed this also?

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Post by Adam Hopkins »

part of the miss-fire could be that one cylinders is running leaner than the rest if your using bigger injectors. I some times have to put cars at 14-1 to make it idle smooth. I used the 4554's yesterday for the first time and everything worked out great! 4554's FTW!!!!

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Post by xenocron »

Gaskleppie wrote:I am using the 4554's now on a few cars but it seems that those cars has small mis fires at idle. Has anybody noticed this also?
Thats generally a property of the injector being used...
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Post by zex_cool »

xenocron wrote:
Gaskleppie wrote:I am using the 4554's now on a few cars but it seems that those cars has small mis fires at idle. Has anybody noticed this also?
Thats generally a property of the injector being used...
what do you mean ? on my last setup my tuner couldnt get it to idle anywhere near 14 afrs. if i remember correctly it idled really nice in the low 13's rage. we used dsm 450cc injectors. some info on reading spark plugs: http://www.strappe.com/plugs.html http://www.dragstuff.com/techarticles/r ... plugs.html http://www.4secondsflat.com/Spark_plug_reading.html

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Post by Gaskleppie »

I got no problems with these cars! They are using different injector brands and sizes. Its just that the ones with the 4554 plugs are misfiring at idle, nothing more. Plugs are looking great. The cars have to run closed loop so the AF at idle will be around 14.7:1 But at idle you can hear it puff out of the exhaust. When it happens (plus minus every 2 a 3 seconds) the AF is going mad. Sometimes it is running ok at idle but when its idling a while it starts puffing. Just like the plugs are getting dirty and start to misfire. I am afraid for the smogtest here in Holland. Maybe they have to change plugs during the smogtest.

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Post by borat »

Sounds like the plugs might be too cold, have you tried a different heat range to see how it idles?

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