S2000 Under The Hood S2000 Technical and Mechanical discussions.

replaced spark plugs *pics*

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Old 08-04-2008, 01:18 PM
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Default replaced spark plugs *pics*

the double platinums. what do you guys think?











my new iridiums (already installed)











the iridiums are noticeably better, its very smooth throughout the whole RPM range comparing it with the double platinum and getting about extra 2-3MPG

need inputs on the old ones. how do they look?

edit: oh yeah, gapped the iridiums to 0.040
Old 08-04-2008, 01:48 PM
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Looks pretty normal to me, how many miles were on that hog before you changed those? (I assume those are the stock NGK's you replaced)
Old 08-04-2008, 05:15 PM
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Originally Posted by Tom-Tom,Aug 4 2008, 05:48 PM
Looks pretty normal to me, how many miles were on that hog before you changed those? (I assume those are the stock NGK's you replaced)
For 4 y/o plugs they look beat, but OK. New ones look sweet...
Old 08-04-2008, 08:03 PM
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old ones are warn down. looks kinda white.. signs of running hot but im sure its ok.. looks good.. and well needed tune up
Old 08-04-2008, 08:51 PM
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Are you modded?

Why did you go with Iridiums and not OEM NGK's?

Who told you to gap to 0.040?
Old 08-04-2008, 10:32 PM
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The gap is to be 0.043, +0, -0.004, he should be fine.
Old 08-05-2008, 02:35 AM
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Both look good.....
Old 08-05-2008, 07:13 AM
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Are you modded?
N/A, comptech intake, fujitsubo,
future: J's headers, berk's high flow cat. conv.

Why did you go with Iridiums and not OEM NGK's?
the iridium are more maintenance free
Originally Posted by xviper,Jan 23 2005, 08:31 AM
The Iridiums, however, tend to be more maintenance free
Who told you to gap to 0.040?
xviper did. my car is running alot better. i will check the plugs in the next 200-300miles and see how they're holding up.
Originally Posted by xviper,Jan 15 2005, 09:23 AM
Are you NA or FI?
NA - 0.040" - 0.044"
FI - 0.032" - 0.035"
Old 08-15-2008, 04:57 PM
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nice set-up, i am getting my fuji this week, also have a comptech...how do you like the fuji?
Old 08-15-2008, 06:50 PM
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Originally Posted by funkemonke,Aug 5 2008, 07:13 AM
the iridium are more maintenance free



Iridiums have been known to fail and breakoff into the cylinder.

0.040 is at the end of the gap for OEM. I would error to the 0.044 side but you will probably be fine.

Sounds like you're good to go.


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