Duduglanza Posted June 23, 2014 Share Posted June 23, 2014 Anyone knows whats the gap for a ngk iridium heat 7 BKR7EIX? And what gap should i do them for 20psi T4 turbo. thanks Quote Link to post Share on other sites
Duduglanza Posted June 23, 2014 Author Share Posted June 23, 2014 is that the gap i should do or the original gap on the plug? Quote Link to post Share on other sites
maddox710 Posted June 23, 2014 Share Posted June 23, 2014 is that the gap i should do or the original gap on the plug?I think they are 0.6mm out the box Quote Link to post Share on other sites
Dean_mc88 Posted June 23, 2014 Share Posted June 23, 2014 mine are 0.8 Quote Link to post Share on other sites
richardc9052 Posted June 23, 2014 Share Posted June 23, 2014 The largest gap you can go without it being blown out on boost.. Quote Link to post Share on other sites
akyakapotter Posted June 23, 2014 Share Posted June 23, 2014 Never gapped a plug always taken it out put it in and off you go never had a problem Quote Link to post Share on other sites
Duduglanza Posted June 23, 2014 Author Share Posted June 23, 2014 http://www.ngk.com/product.aspx?zpid=9352 Quote Link to post Share on other sites
Eynonz Posted June 23, 2014 Share Posted June 23, 2014 Same I just put my Iridiums in the way they came out of the box. Any noticeable benefit of having a wider gap? Quote Link to post Share on other sites
Duduglanza Posted June 24, 2014 Author Share Posted June 24, 2014 I was reading on a ep91 manual that 4efte must have .6mm gapped plugs.. (on a stantard engine). Most of the iridiums plugs have .8mm. Quote Link to post Share on other sites
gorganl2000 Posted June 24, 2014 Share Posted June 24, 2014 at higher boost levels sometimes 0.5mm has been used to avoid spark blowoutyou can try moving from 1.1mm to 0.5mm closing in 0.1mm increments until there is no spark blow out Quote Link to post Share on other sites
AdamB Posted June 28, 2014 Share Posted June 28, 2014 Same I just put my Iridiums in the way they came out of the box. Any noticeable benefit of having a wider gap? Stronger spark, better fuel economy, longer lasting. Quote Link to post Share on other sites
gorganl2000 Posted June 29, 2014 Share Posted June 29, 2014 (edited) i'll also add, i used to buy expensive iridium and platinum plugsnowadays i buy the cheaper ngk copper plugs of the appropriate grade, i've not noticed any drop in performance or economy Edited June 29, 2014 by gorganl2000 Quote Link to post Share on other sites
AdamB Posted July 1, 2014 Share Posted July 1, 2014 Just to add to this, I had a spare set of NGK Iridium's sat in my toolbox and I gapped them today and preset out of the box they were gapped to 0.7mm which is way too tight. Quote Link to post Share on other sites
DevonGT Posted July 2, 2014 Share Posted July 2, 2014 i'll also add, i used to buy expensive iridium and platinum plugs nowadays i buy the cheaper ngk copper plugs of the appropriate grade, i've not noticed any drop in performance or economy Same here. Quote Link to post Share on other sites
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