need to replace spark plugs
10-30-08, 04:49 PM
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need to replace spark plugs
alright so i am to the point where i need to replace my spark plugs and wires.. i have a 1993 SC300 NA-T and not to sure what to go with so looking on any suggestions that people have. let me know thanks!
10-30-08, 05:22 PM
#3
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I went with NGK BKR5EP-11 and OEM wires. One of the biggest PIA jobs I did all summer..........but that was due to a stripped bolt from the last owner other than that it was super easy.
10-30-08, 09:05 PM
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since you are na-t use the same plugs i use ngk 6097 they are 1 step colder than ngk3330 and they come pre gapped at .32 which is good and the are less then 2 dollars each you can get them at advanced discount auto but not autozone
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10-31-08, 09:32 PM
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That gap is known for trouble in a turbo 2jz. Go to supraforums and do a search. You had better bring that down to a maximum of .28 or you seriously risk spark blow out. A nasty misfire will rear its head if you get toward 16 psi on plugs set to .32
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Last edited by SCoupe; 10-31-08 at 09:37 PM.
11-01-08, 09:12 PM
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Then you have been very lucky or never cranked up the boost.
That gap is known for trouble in a turbo 2jz. Go to supraforums and do a search. You had better bring that down to a maximum of .28 or you seriously risk spark blow out. A nasty misfire will rear its head if you get toward 16 psi on plugs set to .32
Word
That gap is known for trouble in a turbo 2jz. Go to supraforums and do a search. You had better bring that down to a maximum of .28 or you seriously risk spark blow out. A nasty misfire will rear its head if you get toward 16 psi on plugs set to .32
Word
yeah i know i just dropped them in im running 19psi but i drive normal i have another set that im going to gap lower
but this should help in your decision for spark plugs
Plug selection
Note - This selection list does not take Nitrous into account. If you have Nitrous go one grade colder than this table advises at your boost/performance level.
Rule of thumb
Iridiums should always come pregapped correctly - altering the gap will cause damage. If you test the gap and it isn't correct return them to the stockist and check they got in the right version.
Normally Aspirated
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) - gap is already 1.1mm at the "-11" signifies they should be set to this already.
NGK - G-Power Platinum - BKR5EGP (7090) - gap to 1.1mm
NGK -Laser Platinum - BKR5EP-11 (3440) - gap is already 1.1mm at the "-11" signifies they should be set to this already.
NGK -OE Laser Iridium - IFR5T11 (4996) - gap is already 1.1mm at the "-11" signifies they should be set to this already.
NGK - Iridium IX - BKR5EIX-11 (5464) - gap is already 1.1mm at the "-11" signifies they should be set to this already.
Denso Platinum - PK16R11 - gap to 1.1 (but always check first)
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) - gap is already 1.1mm at the "-11" signifies they should be set to this already.
Denso Platinum - PK20R11 - gap 1.1mm
Denso Iridium - IK20 - leave gap alone
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
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
Personal experience
Previous discussions on this and other BBS's.
11-02-08, 01:12 PM
#11
Weird...I'm running BKR6Es which I've heard was the OEM for the 1J. I originally gapped them to .8mm, and it was running okay, then my friend told me to gap them tighter, and now I've got misfires under boost. Anyone have suggestions?
I'm running a 1J with FMIC and intake, that's about it.
I'm running a 1J with FMIC and intake, that's about it.
11-02-08, 07:07 PM
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Weird...I'm running BKR6Es which I've heard was the OEM for the 1J. I originally gapped them to .8mm, and it was running okay, then my friend told me to gap them tighter, and now I've got misfires under boost. Anyone have suggestions?
I'm running a 1J with FMIC and intake, that's about it.
I'm running a 1J with FMIC and intake, that's about it.
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