Spark Plug Information Guide

[steve_fctuning]

Ok chaps

I thought id share this useful spark plug information - most BASED ON TOYOTA SUPRA


Its based on 2JZ/RB26 but can and in most cases does apply to most 4,6,& 8 cylinder Jap Engines



Plug selection



NA Cars

NGK - Standard - BKR5ES-11 (2382) - gap is already 1.1mm at the "-11" signifies they should be set to this already.
NGK - V-Power - BKR5EYA-11 (2526)
NGK - G-Power Platinum - BKR5EGP (7090) - gap to 0.8mm
NGK -Laser Platinum - BKR5EP-11 (3440)
NGK -OE Laser Iridium - IFR5T11 (4996)
NGK - Iridium IX - BKR5EIX-11 (5464)
Denso Platinum - PK16R11 - gap to 1.1

Stock TT
NGK - BCPR6EP-11 - gap is already 1.1mm at the "-11" signifies they should be set to this already.
NGK - BKR6E (2756) - gap 1.1mm
NGK Iridium - BKR6EIX-11 (3764)
Denso Platinum - PK20R11
Denso Iridium - IK20

TT @ upto 1bar
NGK - BCPR7ES (3330) - gap 0.9mm
NGK - BKR7E (6097) - gap 0.9mm
NGK - Iridium - BKR6EIX or BKR7EIX - leave gap alone
Denso Platinum - PK20R11 - gap 0.8mm
Denso Iridium - IK22 - leave gap alone

TT/hybrids @ upto 1.3bar
NGK - BCPR7ES (3330) - gap 0.7mm
NGK - BKR7E (6097) - gap 0.7mm
NGK - BKR8E - gap to 0.7mm
NGK - BCPR8ES (3330) - gap 0.7mm
NGK Iridium - BKR7EIX - leave gap alone
NGK Iridium - BKR8EIX - leave gap alone
Denso Platinum - PK20R8 - gap 0.7mm
Denso Iridium - IK22 - leave gap alone
Denso Iridium - IK24 - leave gap alone

Single Turbo/Big Twins @ upto 1.3bar
NGK - BCPR7ES (3330) - gap 0.7mm - COMMON ONE and cheap
NGK - BKR7E (6097) - gap 0.7mm
NGK - BKR8E - gap to 0.7mm
NGK Iridium - BKR7EIX/BKR8EIX - leave gap alone
Denso Iridium - IK24 - leave gap alone

Single Turbo/Big Twins @ upto 1.8bar
NGK - BCPR8ES - gap 0.6-0.7mm
NGK - BKR8E - gap 0.6-0.7mm
NGK Iridium - BKR8EIX - leave gap alone
Denso Iridium - IK27 - leave gap alone

Single Turbo/Big Twins @ 2+bar
NGK - BCPR8ES - gap 0.6mm ??? UNTESTED
NGK - BKR8E - gap 0.6mm ??? UNTESTED
NGK Iridium - BKR8EIX or BKR9EIX? - leave gap alone ??? UNTESTED
Denso Iridium - IK27 to IK31 - leave gap alone ??? UNTESTED


Information sources.......
Denso
NGK
Sparkplugs.co.uk
Supra Sites on the web as well as other