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05-26-2008, 09:34 PM
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#1 (permalink) |
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Forum Member
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Spark Plugs?
For those of you running 20+psi what spark plugs are you using?
I'm still running a stock heat range, but that's probably why I'm having to pull so much timing to prevent the knock.... Also what brand and type? Iridum? Part# would be acceptional too! I'm running NGK Iridum IX, BKR6EIX-11, with E85. I should probably go with a colder plug, but not sure 1 heat range or 2? When it's cold I have a hard enough time starting this thing, and I don't want to have to pull the plugs once a week to clean them becuase of fouling! UPP
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05-27-2008, 12:18 AM
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#2 (permalink) |
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Master Of Disaster
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Re: Spark Plugs?
IK24 would work great for you
__________________
 1992 3000GT VR-4 #15 of 24. The ORIGINAL Sandstone Gray '99 Conversion.   A slow strangle with your feet on the floor. www.3stech.org - Now with 100% less invite codes! Free Registration! |
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05-27-2008, 12:46 AM
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#3 (permalink) |
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Background Guy
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Re: Spark Plugs?
Your having knock issues with E85...? How much boost are you running? What is your timing at WOT?
-Rogue
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'86 944 Turbo (951)
E-85 Fuel Convert Powerhaus K27DR Turbo MAF Translator Pro - MAP Conversion! With Knock Monitoring! Motronic Enhanements Custom Chip By Hally! Old Dyno Corrected: 390 RWHP, 417 RWTQ @ +5200ft  See my build-up here! '02 GSX-R 750 Stock w/ Yoshi slip-on |
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05-27-2008, 08:40 PM
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#4 (permalink) |
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Forum Member
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Re: Spark Plugs?
Denso? Ok, works for me... That looks 2 heat ranges colder?
Yea, I'm seeing some knock (+2volts raw), not really sure if it's phantom knock, or if it really is there. I'm in the process of building some det-cans to hear for myself, but the spikes are sudden, steep, and above the rest of the "crowd" of signals in the area. I too was hoping running E85 that I wouldn't need anything colder, but I'm going to try to make this engine last at least through the season, so I'd rather be safe than $orry. I'm running 24psi, and I don't know what my ign was, I'll have to look at the maps tomorrow when I'm back at the shop with my laptop. I do remember compared to just about everything else that I looked at it was pretty retarded. I tuned it to hang out 11.4-11.6 AFR under boost, but I noticed that on the last EVO that we tuned 10.5 netted us +3-4 deg of timing, and quite a bit more power. I just got a new AWD dyno, and provided I can free up some time on it, I'm going to try to stick it on there this weekend and get some play time in. I just wanted to get the stupid things like plugs out of the way.... UPP |
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