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Old 03-17-2008, 12:49 PM   #1
Destroy
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Default What should I gap 07 STI NGK 1 heat range colder plugs to??

Thanks for the help.
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Old 03-17-2008, 01:35 PM   #2
camshaft06
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I believe it is 0.030". But some one please correct me if I am wrong. You can always call the dealer too, they should be able to tell you for sure.
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Old 03-17-2008, 02:00 PM   #3
phlegmon
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If you're talking about the 1-step colder IRIDIUM tipped plugs (the stock NGK plugs are iridium), then you SHOULD NOT GAP THEM. If you try and gap iridium plugs, you'll break the tip off. They should already be gapped appropriatley out of the box. If I recall correctly, you're really not supposed to even MEASURE the gap (definitely not with the cheap-O autozone measure wheels- feeler gauges are probably OK, if done VERY gently), the tips are that fragile...
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Old 03-17-2008, 03:11 PM   #4
Destroy
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The part number on the plugs is LFR7AIX NGK Iridium
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Old 03-17-2008, 03:36 PM   #5
fujiillin
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Quote:
Originally Posted by phlegmon View Post
If you're talking about the 1-step colder IRIDIUM tipped plugs (the stock NGK plugs are iridium), then you SHOULD NOT GAP THEM. If you try and gap iridium plugs, you'll break the tip off. They should already be gapped appropriatley out of the box. If I recall correctly, you're really not supposed to even MEASURE the gap (definitely not with the cheap-O autozone measure wheels- feeler gauges are probably OK, if done VERY gently), the tips are that fragile...
fwiw, you can gap them, just don't touch the electrode.

Mine came gapped to around .028-.029 (feeler gauges) which was exactly what I was going to gap them to.
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